//-----------------------------------------------------------------------------
// Borrowed initially from https://github.com/nfc-tools/libfreefare
// Copyright (C) 2010, Romain Tartiere.
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// See LICENSE.txt for the text of the license.
//-----------------------------------------------------------------------------
// High frequency Desfire core functions
//-----------------------------------------------------------------------------
// Info from here and many other sources from the public internet sites
// https://github.com/revk/DESFireAES
// https://github.com/step21/desfire_rfid
// https://github.com/patsys/desfire-python/blob/master/Desfire/DESFire.py
//-----------------------------------------------------------------------------

#include "desfirecore.h"
#include <stdlib.h>
#include <string.h>
#include <util.h>
#include "commonutil.h"
#include "generator.h"
#include "aes.h"
#include "ui.h"
#include "crc.h"
#include "crc16.h"                 // crc16 ccitt
#include "crc32.h"
#include "protocols.h"             // ISO7816 APDU return codes
#include "cmdhf14a.h"
#include "iso7816/apduinfo.h"      // APDU manipulation / errorcodes
#include "iso7816/iso7816core.h"   // APDU logging
#include "util_posix.h"            // msleep
#include "desfiresecurechan.h"
#include "mifare/mad.h"
#include "mifare/aiddesfire.h"


const CLIParserOption DesfireAlgoOpts[] = {
    {T_DES,    "des"},
    {T_3DES,   "2tdea"},
    {T_3K3DES, "3tdea"},
    {T_AES,    "aes"},
    {0,    NULL},
};
const size_t DesfireAlgoOptsLen = ARRAYLEN(DesfireAlgoOpts);

const CLIParserOption DesfireKDFAlgoOpts[] = {
    {MFDES_KDF_ALGO_NONE,      "none"},
    {MFDES_KDF_ALGO_AN10922,   "an10922"},
    {MFDES_KDF_ALGO_GALLAGHER, "gallagher"},
    {0,    NULL},
};
const size_t DesfireKDFAlgoOptsLen = ARRAYLEN(DesfireKDFAlgoOpts);

const CLIParserOption DesfireCommunicationModeOpts[] = {
    {DCMPlain,     "plain"},
    {DCMMACed,     "mac"},
    {DCMEncrypted, "encrypt"},
    {0,    NULL},
};
const size_t DesfireCommunicationModeOptsLen = ARRAYLEN(DesfireCommunicationModeOpts);

const CLIParserOption DesfireCommandSetOpts[] = {
    {DCCNative,    "native"},
    {DCCNativeISO, "niso"},
    {DCCISO,       "iso"},
    {0,    NULL},
};
const size_t DesfireCommandSetOptsLen = ARRAYLEN(DesfireCommandSetOpts);

const CLIParserOption DesfireSecureChannelOpts[] = {
    {DACd40, "d40"},
    {DACEV1, "ev1"},
    {DACEV2, "ev2"},
    {DACLRP, "lrp"},
    {0,    NULL},
};
const size_t DesfireSecureChannelOptsLen = ARRAYLEN(DesfireSecureChannelOpts);

const CLIParserOption DesfireFileAccessModeOpts[] = {
    {0x00, "key0"},
    {0x01, "key1"},
    {0x02, "key2"},
    {0x03, "key3"},
    {0x04, "key4"},
    {0x05, "key5"},
    {0x06, "key6"},
    {0x07, "key7"},
    {0x08, "key8"},
    {0x09, "key9"},
    {0x0a, "key10"},
    {0x0b, "key11"},
    {0x0c, "key12"},
    {0x0d, "key13"},
    {0x0e, "free"},
    {0x0f, "deny"},
    {0,    NULL},
};

const CLIParserOption DesfireValueFileOperOpts[] = {
    {MFDES_GET_VALUE,      "get"},
    {MFDES_CREDIT,         "credit"},
    {MFDES_LIMITED_CREDIT, "limcredit"},
    {MFDES_DEBIT,          "debit"},
    {0xff,                 "clear"},
    {0,    NULL},
};

const CLIParserOption DesfireReadFileTypeOpts[] = {
    {RFTAuto,   "auto"},
    {RFTData,   "data"},
    {RFTValue,  "value"},
    {RFTRecord, "record"},
    {RFTMAC,    "mac"},
    {0,    NULL},
};

static const char *getstatus(const uint16_t *sw) {
    if (sw == NULL) return "--> sw argument error. This should never happen !";
    if (((*sw >> 8) & 0xFF) == 0x91) {
        switch (*sw & 0xFF) {
            case MFDES_E_OUT_OF_EEPROM:
                return "Out of Eeprom, insufficient NV-Memory to complete command";
            case MFDES_E_ILLEGAL_COMMAND_CODE:
                return "Command code not supported";

            case MFDES_E_INTEGRITY_ERROR:
                return "CRC or MAC does not match data / Padding bytes invalid";

            case MFDES_E_NO_SUCH_KEY:
                return "Invalid key number specified";

            case MFDES_E_LENGTH:
                return "Length of command string invalid";

            case MFDES_E_PERMISSION_DENIED:
                return "Current configuration/status does not allow the requested command";

            case MFDES_E_PARAMETER_ERROR:
                return "Value of the parameter(s) invalid";

            case MFDES_E_APPLICATION_NOT_FOUND:
                return "Requested AID not present on PICC";

            case MFDES_E_APPL_INTEGRITY:
                return "Application integrity error, application will be disabled";

            case MFDES_E_AUTHENTICATION_ERROR:
                return "Current authentication status does not allow the requested command";

            case MFDES_E_BOUNDARY:
                return "Attempted to read/write data from/to beyond the file's/record's limit";

            case MFDES_E_PICC_INTEGRITY:
                return "PICC integrity error, PICC will be disabled";

            case MFDES_E_COMMAND_ABORTED:
                return "Previous command was not fully completed / Not all Frames were requested or provided by the PCD";

            case MFDES_E_PICC_DISABLED:
                return "PICC was disabled by an unrecoverable error";

            case MFDES_E_COUNT:
                return "Application count is limited to 28, not addition CreateApplication possible";

            case MFDES_E_DUPLICATE:
                return "Duplicate entry: File/Application/ISO Text does already exist";

            case MFDES_E_EEPROM:
                return "Eeprom error due to loss of power, internal backup/rollback mechanism activated";

            case MFDES_E_FILE_NOT_FOUND:
                return "Specified file number does not exist";

            case MFDES_E_FILE_INTEGRITY:
                return "File integrity error, file will be disabled";

            default:
                return "Unknown error";
        }
    }
    return "Unknown error";
}

const char *DesfireGetErrorString(int res, uint16_t *sw) {
    switch (res) {
        case PM3_EAPDU_FAIL:
            return getstatus(sw);
        case PM3_EUNDEF:
            return "Undefined error";
        case PM3_EINVARG:
            return "Invalid argument(s)";
        case PM3_EDEVNOTSUPP:
            return "Operation not supported by device";
        case PM3_ETIMEOUT:
            return "Operation timed out";
        case PM3_EOPABORTED:
            return "Operation aborted (by user)";
        case PM3_ENOTIMPL:
            return "Not (yet) implemented";
        case PM3_ERFTRANS:
            return "Error while RF transmission";
        case PM3_EIO:
            return "Input / output error";
        case PM3_EOVFLOW:
            return "Buffer overflow";
        case PM3_ESOFT:
            return "Software error";
        case PM3_EFLASH:
            return "Flash error";
        case PM3_EMALLOC:
            return "Memory allocation error";
        case PM3_EFILE:
            return "File error";
        case PM3_ENOTTY:
            return "Generic TTY error";
        case PM3_EINIT:
            return "Initialization error";
        case PM3_EWRONGANSWER:
            return "Expected a different answer error";
        case PM3_EOUTOFBOUND:
            return "Memory out-of-bounds error";
        case PM3_ECARDEXCHANGE:
            return "Exchange with card error";
        case PM3_EAPDU_ENCODEFAIL:
            return "Failed to create APDU";
        case PM3_ENODATA:
            return "No data";
        case PM3_EFATAL:
            return "Fatal error";
        default:
            break;
    }
    return "";
}

const char *DesfireAuthErrorToStr(int error) {
    switch (error) {
        case 1:
            return "Sending auth command failed";
        case 2:
            return "Authentication failed. No data received";
        case 3:
            return "Authentication failed. Invalid key number.";
        case 4:
            return "Authentication failed. Length of answer doesn't match algo length";
        case 5:
            return "mbedtls_aes_setkey_dec failed";
        case 6:
            return "mbedtls_aes_setkey_enc failed";
        case 7:
            return "Sending auth command failed";
        case 8:
            return "Authentication failed. Card timeout.";
        case 9:
            return "Authentication failed.";
        case 10:
            return "mbedtls_aes_setkey_dec failed";
        case 11:
            return "Authentication failed. Cannot verify Session Key.";
        case 12:
            return "Authentication failed. Cannot verify CMAC.";
        case 50:
            return "PICC returned not an AES answer";
        case 51:
            return "PICC returned not an LRP answer";
        case 100:
            return "Can't find auth method for provided channel parameters.";
        case 200:
            return "Can't select application.";
        case 201:
            return "Authentication returned no error but channel not authenticated.";
        case 202:
            return "Can't select application by ISO ID.";
        case 203:
            return "Can't select file by ISO ID.";
        case 301:
            return "ISO Get challenge error.";
        case 302:
            return "ISO Get challenge returned wrong length.";
        case 303:
            return "Crypto encode piccrnd1 error.";
        case 304:
            return "External authenticate error.";
        case 305:
            return "Internal authenticate error.";
        case 306:
            return "Internal authenticate returned wrong length.";
        case 307:
            return "Crypto decode piccrnd2 error.";
        case 308:
            return "Random numbers don't match. Authentication failed.";
        default:
            break;
    }
    return "";
}

const char *DesfireSelectWayToStr(DesfireISOSelectWay way) {
    switch (way) {
        case ISW6bAID:
            return "AID";
        case ISWMF:
            return "MF";
        case ISWIsoID:
            return "ISO ID";
        case ISWDFName:
            return "DF Name";
        default:
            break;
    }
    return "";
}

char *DesfireWayIDStr(DesfireISOSelectWay way, uint32_t id) {
    static char str[200] = {0};

    if (way == ISWMF || way == ISWDFName)
        snprintf(str, sizeof(str), "%s", DesfireSelectWayToStr(way));
    else
        snprintf(str, sizeof(str), "%s %0*x", DesfireSelectWayToStr(way), (way == ISW6bAID) ? 6 : 4, id);

    return str;
}

bool DesfireMFSelected(DesfireISOSelectWay way, uint32_t id) {
    switch (way) {
        case ISW6bAID:
            return (id == 0x000000);
        case ISWMF:
            return true;
        case ISWIsoID:
            return (id == 0x3f00);
        case ISWDFName:
            return false;
        default:
            break;
    }
    return false;
}

// iceman todo:  use commonutil.c instead
uint32_t DesfireAIDByteToUint(const uint8_t *data) {
    return data[0] + (data[1] << 8) + (data[2] << 16);
}

void DesfireAIDUintToByte(uint32_t aid, uint8_t *data) {
    data[0] = aid & 0xff;
    data[1] = (aid >> 8) & 0xff;
    data[2] = (aid >> 16) & 0xff;
}

static uint8_t DesfireKeyToISOKey(DesfireCryptoAlgorithm keytype) {
    switch (keytype) {
        case T_DES:
            return 0x02;
        case T_3DES:
            return 0x02;
        case T_3K3DES:
            return 0x04;
        case T_AES:
            return 0x09;
    }
    return 0x00;
}

static uint8_t DesfireGetRndLenForKey(DesfireCryptoAlgorithm keytype) {
    switch (keytype) {
        case T_DES:
            return 0x08;
        case T_3DES:
            return 0x08;
        case T_3K3DES:
            return 0x10;
        case T_AES:
            return 0x10;
    }
    return 0x00;
}

void DesfirePrintContext(DesfireContext_t *ctx) {
    PrintAndLogEx(INFO, "Key num: %d Key algo: %s Key[%d]: %s",
                  ctx->keyNum,
                  CLIGetOptionListStr(DesfireAlgoOpts, ctx->keyType),
                  desfire_get_key_length(ctx->keyType),
                  sprint_hex(ctx->key,
                             desfire_get_key_length(ctx->keyType)));

    if (ctx->kdfAlgo != MFDES_KDF_ALGO_NONE) {
        PrintAndLogEx(INFO, "KDF algo: %s KDF input[%d]: %s", CLIGetOptionListStr(DesfireKDFAlgoOpts, ctx->kdfAlgo), ctx->kdfInputLen, sprint_hex(ctx->kdfInput, ctx->kdfInputLen));
        PrintAndLogEx(INFO, "AID: %06x UID[%d]: %s", ctx->selectedAID, ctx->uidlen, sprint_hex(ctx->uid, ctx->uidlen));
    }

    PrintAndLogEx(INFO, "Secure channel: %s Command set: %s Communication mode: %s",
                  CLIGetOptionListStr(DesfireSecureChannelOpts, ctx->secureChannel),
                  CLIGetOptionListStr(DesfireCommandSetOpts, ctx->cmdSet),
                  CLIGetOptionListStr(DesfireCommunicationModeOpts, ctx->commMode));


    if (DesfireIsAuthenticated(ctx)) {
        if (memcmp(ctx->sessionKeyMAC, ctx->sessionKeyEnc, desfire_get_key_length(ctx->keyType)) == 0) {
            PrintAndLogEx(INFO, "Session key [%d]: %s ",
                          desfire_get_key_length(ctx->keyType),
                          sprint_hex(ctx->sessionKeyEnc, desfire_get_key_length(ctx->keyType)));
        } else {
            PrintAndLogEx(INFO, "Session key MAC [%d]: %s ",
                          desfire_get_key_length(ctx->keyType),
                          sprint_hex(ctx->sessionKeyMAC, desfire_get_key_length(ctx->keyType)));
            PrintAndLogEx(INFO, "    ENC: %s",
                          sprint_hex(ctx->sessionKeyEnc, desfire_get_key_length(ctx->keyType)));
        }
        PrintAndLogEx(INFO, "    IV [%zu]: %s",
                      desfire_get_key_block_length(ctx->keyType),
                      sprint_hex(ctx->IV, desfire_get_key_block_length(ctx->keyType)));
        if (ctx->secureChannel == DACEV2) {
            PrintAndLogEx(INFO, "    TI: %s cmdCntr: 0x%04x",
                          sprint_hex(ctx->TI, 4),
                          ctx->cmdCntr);
        }

    }
}

static int DESFIRESendApduEx(bool activate_field, sAPDU_t apdu, uint16_t le, uint8_t *result, uint32_t max_result_len, uint32_t *result_len, uint16_t *sw) {
    if (result_len) *result_len = 0;
    if (sw) *sw = 0;

    uint16_t isw = 0;
    int res = 0;

    if (activate_field) {
        DropField();
        msleep(50);
    }

    uint8_t data[APDU_RES_LEN] = {0};

    // COMPUTE APDU
    int datalen = 0;
    if (APDUEncodeS(&apdu, false, le, data, &datalen)) { // 100 == with Le
        PrintAndLogEx(ERR, "APDU encoding error.");
        return PM3_EAPDU_ENCODEFAIL;
    }

    if (GetAPDULogging())
        PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(data, datalen));

    res = ExchangeAPDU14a(data, datalen, activate_field, true, result, max_result_len, (int *)result_len);
    if (res != PM3_SUCCESS) {
        return res;
    }

    if (GetAPDULogging())
        PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(result, *result_len));

    if (*result_len < 2) {
        return PM3_SUCCESS;
    }

    *result_len -= 2;
    isw = (result[*result_len] << 8) + result[*result_len + 1];
    if (sw)
        *sw = isw;

    if (isw != ISO7816_OK &&
            isw != DESFIRE_GET_ISO_STATUS(MFDES_S_OPERATION_OK) &&
            isw != DESFIRE_GET_ISO_STATUS(MFDES_S_SIGNATURE) &&
            isw != DESFIRE_GET_ISO_STATUS(MFDES_S_ADDITIONAL_FRAME) &&
            isw != DESFIRE_GET_ISO_STATUS(MFDES_S_NO_CHANGES)) {
        if (GetAPDULogging()) {
            if (isw >> 8 == 0x61) {
                PrintAndLogEx(ERR, "APDU chaining len: 0x%02x -->", isw & 0xff);
            } else {
                PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [0x%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(isw >> 8, isw & 0xff));
                return PM3_EAPDU_FAIL;
            }
        }
        return PM3_EAPDU_FAIL;
    }
    return PM3_SUCCESS;
}

static int DESFIRESendApdu(bool activate_field, sAPDU_t apdu, uint8_t *result, uint32_t max_result_len, uint32_t *result_len, uint16_t *sw) {
    return DESFIRESendApduEx(activate_field, apdu, APDU_INCLUDE_LE_00, result, max_result_len, result_len, sw);
}

static int DESFIRESendRaw(bool activate_field, uint8_t *data, size_t datalen, uint8_t *result, uint32_t max_result_len, uint32_t *result_len, uint8_t *respcode) {
    *result_len = 0;
    if (respcode) {
        *respcode = 0xff;
    }

    if (activate_field) {
        DropField();
        msleep(50);
    }

    if (GetAPDULogging()) {
        PrintAndLogEx(SUCCESS, "raw>> %s", sprint_hex(data, datalen));
    }

    int res = ExchangeRAW14a(data, datalen, activate_field, true, result, max_result_len, (int *)result_len, true);
    if (res != PM3_SUCCESS) {
        return res;
    }

    if (GetAPDULogging()) {
        PrintAndLogEx(SUCCESS, "raw<< %s", sprint_hex(result, *result_len));
    }

    if (*result_len < 1) {
        return PM3_SUCCESS;
    }

    *result_len -= (1 + 2);

    uint8_t rcode = result[0];
    if (respcode) {
        *respcode = rcode;
    }

    memmove(&result[0], &result[1], *result_len);

    if (rcode != MFDES_S_OPERATION_OK &&
            rcode != MFDES_S_SIGNATURE &&
            rcode != MFDES_S_ADDITIONAL_FRAME &&
            rcode != MFDES_S_NO_CHANGES) {

        if (GetAPDULogging()) {
            PrintAndLogEx(ERR, "Command (%02x) ERROR: 0x%02x", data[0], rcode);
        }
        return PM3_EAPDU_FAIL;
    }
    return PM3_SUCCESS;
}

static int DesfireExchangeNative(bool activate_field, DesfireContext_t *ctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *respcode, uint8_t *resp, size_t *resplen, bool enable_chaining, size_t splitbysize) {
    if (resplen) {
        *resplen = 0;
    }

    if (respcode) {
        *respcode = 0xff;
    }

    uint8_t *buf  = calloc(DESFIRE_BUFFER_SIZE, 1);
    if (buf == NULL) {
        return PM3_EMALLOC;
    }

    uint32_t buflen = 0;
    uint32_t pos = 0;
    uint32_t i = 1;

    uint8_t rcode = 0xff;
    uint8_t cdata[1024]  = {0};
    uint32_t cdatalen = 0;
    cdata[0] = cmd;
    memcpy(&cdata[1], data, datalen);
    cdatalen = datalen + 1;

    int res;
    size_t len;
    // tx chaining
    size_t sentdatalen = 0;
    while (cdatalen >= sentdatalen) {

        if ((cdatalen - sentdatalen) > DESFIRE_TX_FRAME_MAX_LEN)
            len = DESFIRE_TX_FRAME_MAX_LEN;
        else
            len = cdatalen - sentdatalen;

        size_t sendindx = sentdatalen;
        size_t sendlen = len;
        if (sentdatalen > 0) {
            sendindx--;
            sendlen++;
            cdata[sendindx] = MFDES_ADDITIONAL_FRAME;
        }

        res = DESFIRESendRaw(activate_field, &cdata[sendindx], sendlen, buf, DESFIRE_BUFFER_SIZE, &buflen, &rcode);
        if (res != PM3_SUCCESS) {
            uint16_t ssw = DESFIRE_GET_ISO_STATUS(rcode);
            PrintAndLogEx(DEBUG, "error DESFIRESendRaw %s", DesfireGetErrorString(res, &ssw));
            free(buf);
            return res;
        }

        sentdatalen += len;
        if ((rcode != MFDES_ADDITIONAL_FRAME) || (buflen > 0)) {
            if (sentdatalen != cdatalen) {
                PrintAndLogEx(WARNING, "Tx chaining error. Needs to send: %d but sent: %zu", cdatalen, sentdatalen);
            }
            break;
        }
    }

    // rx
    if (resp) {
        if (splitbysize) {
            resp[0] = buflen;
            memcpy(&resp[1], buf, buflen);
        } else {
            memcpy(resp, buf, buflen);
        }
    }
    if (respcode != NULL) {
        *respcode = rcode;
    }

    pos += buflen;

    if (enable_chaining == false) {
        if (rcode == MFDES_S_OPERATION_OK ||
                rcode == MFDES_ADDITIONAL_FRAME) {

            if (resplen) {
                *resplen = pos;
            }
        }
        free(buf);
        return PM3_SUCCESS;
    }

    while (rcode == MFDES_ADDITIONAL_FRAME) {
        cdata[0] = MFDES_ADDITIONAL_FRAME; //0xAF

        res = DESFIRESendRaw(false, cdata, 1, buf, DESFIRE_BUFFER_SIZE, &buflen, &rcode);
        if (res != PM3_SUCCESS) {
            uint16_t ssw = DESFIRE_GET_ISO_STATUS(rcode);
            PrintAndLogEx(DEBUG, "error DESFIRESendRaw %s", DesfireGetErrorString(res, &ssw));
            return res;
        }

        if (respcode != NULL) {
            *respcode = rcode;
        }

        if (resp != NULL) {
            if (splitbysize) {
                resp[i * splitbysize] = buflen;
                memcpy(&resp[i * splitbysize + 1], buf, buflen);
                i += 1;
            } else {
                memcpy(&resp[pos], buf, buflen);
            }
        }
        pos += buflen;

        if (rcode != MFDES_ADDITIONAL_FRAME)
            break;
    }

    if (resplen) {
        *resplen = (splitbysize) ? i : pos;
    }

    free(buf);
    return PM3_SUCCESS;
}

static int DesfireExchangeISONative(bool activate_field, DesfireContext_t *ctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *respcode, uint8_t *resp, size_t *resplen, bool enable_chaining, size_t splitbysize) {
    if (resplen) {
        *resplen = 0;
    }

    if (respcode) {
        *respcode = 0xFF;
    }

    uint16_t sw = 0;
    uint8_t *buf = calloc(DESFIRE_BUFFER_SIZE, 1);
    if (buf == NULL) {
        return PM3_EMALLOC;
    }

    uint32_t buflen = 0;
    uint32_t pos = 0;
    uint32_t i = 1;

    sAPDU_t apdu = {
        .CLA = MFDES_NATIVE_ISO7816_WRAP_CLA, //0x90
        .INS = cmd,
        .P1 = 0,
        .P2 = 0,
    };

    int res;
    // tx chaining
    size_t sentdatalen = 0;
    while (datalen >= sentdatalen) {
        if (datalen - sentdatalen > DESFIRE_TX_FRAME_MAX_LEN) {
            apdu.Lc = DESFIRE_TX_FRAME_MAX_LEN;
        } else {
            apdu.Lc = datalen - sentdatalen;
        }

        apdu.data = &data[sentdatalen];

        if (sentdatalen > 0) {
            apdu.INS = MFDES_ADDITIONAL_FRAME;
        }

        res = DESFIRESendApdu(activate_field, apdu, buf, DESFIRE_BUFFER_SIZE, &buflen, &sw);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(DEBUG, "error DESFIRESendApdu %s", DesfireGetErrorString(res, &sw));
            free(buf);
            return res;
        }

        sentdatalen += apdu.Lc;
        if (sw != DESFIRE_GET_ISO_STATUS(MFDES_ADDITIONAL_FRAME) || buflen > 0) {
            if (sentdatalen != datalen) {
                PrintAndLogEx(WARNING, "Tx chaining error. Needs to send: %zu but sent: %zu", datalen, sentdatalen);
            }
            break;
        }
    }

    if (respcode != NULL && ((sw & 0xFF00) == 0x9100)) {
        *respcode = sw & 0xFF;
    }

    if (resp) {
        if (splitbysize) {
            resp[0] = buflen;
            memcpy(&resp[1], buf, buflen);
        } else {
            memcpy(resp, buf, buflen);
        }
    }

    pos += buflen;
    if (enable_chaining == false) {
        if (sw == DESFIRE_GET_ISO_STATUS(MFDES_S_OPERATION_OK) ||
                sw == DESFIRE_GET_ISO_STATUS(MFDES_ADDITIONAL_FRAME)) {

            if (resplen) {
                *resplen = pos;
            }
        }
        free(buf);
        return PM3_SUCCESS;
    }

    while (sw == DESFIRE_GET_ISO_STATUS(MFDES_ADDITIONAL_FRAME)) {
        apdu.CLA = MFDES_NATIVE_ISO7816_WRAP_CLA; //0x90
        apdu.INS = MFDES_ADDITIONAL_FRAME; //0xAF
        apdu.Lc = 0;
        apdu.P1 = 0;
        apdu.P2 = 0;
        apdu.data = NULL;

        buflen = 0;

        res = DESFIRESendApdu(false, apdu, buf, DESFIRE_BUFFER_SIZE, &buflen, &sw);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(DEBUG, "error DESFIRESendApdu %s", DesfireGetErrorString(res, &sw));
            free(buf);
            return res;
        }

        if (respcode != NULL && ((sw & 0xFF00) == 0x9100)) {
            *respcode = sw & 0xFF;
        }

        if (resp != NULL) {
            if (splitbysize) {
                resp[i * splitbysize] = buflen;
                memcpy(&resp[i * splitbysize + 1], buf, buflen);
                i += 1;
            } else {
                memcpy(resp + (pos), buf, buflen);
            }
        }

        pos += buflen;

        if (sw != DESFIRE_GET_ISO_STATUS(MFDES_ADDITIONAL_FRAME)) {
            break;
        }
    }


    if (resplen) {
        *resplen = (splitbysize) ? i : pos;
    }

    free(buf);
    return PM3_SUCCESS;
}

static int DesfireExchangeISO(bool activate_field, DesfireContext_t *ctx, sAPDU_t apdu, uint16_t le, uint8_t *resp, size_t *resplen, uint16_t *sw) {
    uint8_t *data  = calloc(DESFIRE_BUFFER_SIZE, 1);
    if (data == NULL) {
        return PM3_EMALLOC;
    }

    uint32_t datalen = 0;
    int res = DESFIRESendApduEx(activate_field, apdu, le, data, DESFIRE_BUFFER_SIZE, &datalen, sw);

    if (res == PM3_SUCCESS) {
        DesfireSecureChannelDecode(ctx, data, datalen, 0, resp, resplen);
    }

    free(data);
    return res;
}

// move data from blockdata [format: <length, data><length, data>...] to single data block
static void DesfireJoinBlockToBytes(uint8_t *blockdata, size_t blockdatacount, size_t blockdatasize, uint8_t *dstdata, size_t *dstdatalen) {
    *dstdatalen = 0;
    for (int i = 0; i < blockdatacount; i++) {
        memcpy(&dstdata[*dstdatalen], &blockdata[i * blockdatasize + 1], blockdata[i * blockdatasize]);
        *dstdatalen += blockdata[i * blockdatasize];
    }
}

// move data from single data block to blockdata [format: <length, data><length, data>...]
// lengths in the blockdata is not changed. result - in the blockdata
static void DesfireSplitBytesToBlock(uint8_t *blockdata, size_t *blockdatacount, size_t blockdatasize, uint8_t *dstdata, size_t dstdatalen) {
    size_t len = 0;
    for (int i = 0; i < *blockdatacount; i++) {
        memset(&blockdata[i * blockdatasize + 1], 0, blockdatasize - 1);
        size_t tlen = len + blockdata[i * blockdatasize];
        if (tlen > dstdatalen) {
            tlen = dstdatalen;

            if (tlen >= len)
                blockdata[i * blockdatasize] = tlen - len;
            else
                blockdata[i * blockdatasize] = 0;
        }

        if (len == tlen) {
            *blockdatacount = i;
            break;
        }

        memcpy(&blockdata[i * blockdatasize + 1], &dstdata[len], tlen - len);
        len = tlen;
    }
}

int DesfireExchangeEx(bool activate_field, DesfireContext_t *ctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *respcode,
                      uint8_t *resp, size_t *resplen, bool enable_chaining, size_t splitbysize) {
    int res = PM3_SUCCESS;

    if (PrintChannelModeWarning(cmd, ctx->secureChannel, ctx->cmdSet, ctx->commMode) == false) {
        DesfirePrintContext(ctx);
    }

    uint8_t *databuf = calloc(DESFIRE_BUFFER_SIZE, 1);
    if (databuf == NULL) {
        return PM3_EMALLOC;
    }

    size_t databuflen = 0;

    switch (ctx->cmdSet) {
        case DCCNative:
        case DCCNativeISO:
            DesfireSecureChannelEncode(ctx, cmd, data, datalen, databuf, &databuflen);

            if (ctx->cmdSet == DCCNative) {
                res = DesfireExchangeNative(activate_field, ctx, cmd, databuf, databuflen, respcode, databuf, &databuflen, enable_chaining, splitbysize);
            } else {
                res = DesfireExchangeISONative(activate_field, ctx, cmd, databuf, databuflen, respcode, databuf, &databuflen, enable_chaining, splitbysize);
            }

            if (splitbysize) {
                uint8_t sdata[DESFIRE_BUFFER_SIZE] = {0};
                size_t sdatalen = 0;
                DesfireJoinBlockToBytes(databuf, databuflen, splitbysize, sdata, &sdatalen);

                //PrintAndLogEx(INFO, "block : %s", sprint_hex(sdata, sdatalen));
                DesfireSecureChannelDecode(ctx, sdata, sdatalen, *respcode, resp, resplen);

                DesfireSplitBytesToBlock(databuf, &databuflen, splitbysize, resp, *resplen);
                memcpy(resp, databuf, databuflen * splitbysize);
                *resplen = databuflen;
            } else {
                DesfireSecureChannelDecode(ctx, databuf, databuflen, *respcode, resp, resplen);
            }
            break;
        case DCCISO:
            free(databuf);
            return PM3_EAPDU_FAIL;
            break;
    }

    free(databuf);
    return res;
}

int DesfireExchange(DesfireContext_t *ctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *respcode, uint8_t *resp, size_t *resplen) {
    return DesfireExchangeEx(false, ctx, cmd, data, datalen, respcode, resp, resplen, true, 0);
}

int DesfireSelectAID(DesfireContext_t *ctx, uint8_t *aid1, uint8_t *aid2) {
    if (aid1 == NULL) {
        return PM3_EINVARG;
    }

    uint8_t data[6] = {0};
    memcpy(data, aid1, 3);
    if (aid2 != NULL) {
        memcpy(&data[3], aid2, 3);
    }

    uint8_t resp[257] = {0};
    size_t resplen = 0;
    uint8_t respcode = 0;

    ctx->secureChannel = DACNone;
    int res = DesfireExchangeEx(true, ctx, MFDES_SELECT_APPLICATION, data, (aid2 == NULL) ? 3 : 6, &respcode, resp, &resplen, true, 0);
    if (res == PM3_SUCCESS) {
        if (resplen != 0) {
            return PM3_ECARDEXCHANGE;
        }

        // select operation fail
        if (respcode != MFDES_S_OPERATION_OK) {
            return PM3_EAPDU_FAIL;
        }

        DesfireClearSession(ctx);
        ctx->appSelected = (aid1[0] != 0x00 || aid1[1] != 0x00 || aid1[2] != 0x00);
        ctx->selectedAID = DesfireAIDByteToUint(aid1);

        return PM3_SUCCESS;
    }

    return res;
}

int DesfireSelectAIDHex(DesfireContext_t *ctx, uint32_t aid1, bool select_two, uint32_t aid2) {
    uint8_t data[6] = {0};

    DesfireAIDUintToByte(aid1, data);
    DesfireAIDUintToByte(aid2, &data[3]);

    return DesfireSelectAID(ctx, data, (select_two) ? &data[3] : NULL);
}

int DesfireSelectAIDHexNoFieldOn(DesfireContext_t *ctx, uint32_t aid) {
    uint8_t data[3] = {0};

    DesfireAIDUintToByte(aid, data);

    uint8_t resp[257] = {0};
    size_t resplen = 0;
    uint8_t respcode = 0;

    ctx->secureChannel = DACNone;
    int res = DesfireExchangeEx(false, ctx, MFDES_SELECT_APPLICATION, data, 3, &respcode, resp, &resplen, true, 0);
    if (res == PM3_SUCCESS) {
        if (resplen != 0)
            return PM3_ECARDEXCHANGE;

        // select operation fail
        if (respcode != MFDES_S_OPERATION_OK)
            return PM3_EAPDU_FAIL;

        DesfireClearSession(ctx);
        ctx->appSelected = (aid != 0x000000);
        ctx->selectedAID = aid;

        return PM3_SUCCESS;
    }
    return res;
}

void DesfirePrintMADAID(uint32_t appid, bool verbose) {
    uint8_t aid[3] = {0};
    DesfireAIDUintToByte(appid, aid);
    if ((aid[2] >> 4) != 0xF)
        return;

    uint16_t short_aid = ((aid[2] & 0xF) << 12) | (aid[1] << 4) | (aid[0] >> 4);

    PrintAndLogEx(SUCCESS, "MIFARE Classic ID (MAD): " _YELLOW_("%04X") " ver: " _YELLOW_("%01X") " AID: " _YELLOW_("%06x") " MAD AID Cluster[0x%02X]: " _YELLOW_("%s"),
                  short_aid,
                  appid & 0x0f,
                  appid,
                  short_aid >> 8,
                  nxp_cluster_to_text(short_aid >> 8));
    if (verbose) {
        if (appid == 0xffffff)
            PrintAndLogEx(SUCCESS, "  Card issuer information application");
        else
            MADDFDecodeAndPrint(short_aid, verbose);
    }
}

void DesfirePrintAIDFunctions(uint32_t appid) {
    uint8_t aid[3] = {0};
    DesfireAIDUintToByte(appid, aid);
    if ((aid[2] >> 4) == 0xF) {
        uint16_t short_aid = ((aid[2] & 0xF) << 12) | (aid[1] << 4) | (aid[0] >> 4);
        PrintAndLogEx(SUCCESS, "  AID mapped to MIFARE Classic AID (MAD): " _YELLOW_("%02X"), short_aid);
        PrintAndLogEx(SUCCESS, "  MAD AID Cluster  0x%02X      : " _YELLOW_("%s"), short_aid >> 8, nxp_cluster_to_text(short_aid >> 8));
        MADDFDecodeAndPrint(short_aid, false);
    } else {
        AIDDFDecodeAndPrint(aid);
    }
}

int DesfireSelectAndAuthenticateEx(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, uint32_t aid, bool noauth, bool verbose) {
    if (verbose)
        DesfirePrintContext(dctx);

    // needs card uid for diversification
    if (dctx->kdfAlgo == MFDES_KDF_ALGO_GALLAGHER)
        DesfireGetCardUID(dctx);

    bool isosw = false;
    if (dctx->cmdSet == DCCISO) {
        dctx->cmdSet = DCCNativeISO;
        isosw = true;
        if (verbose)
            PrintAndLogEx(INFO, "Switch to " _CYAN_("native") " for select");
    }

    int res;
    if (aid == 0x000000) {
        res = DesfireAnticollision(verbose);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire anticollision " _RED_("error") ".");
            return 200;
        }
        if (verbose)
            PrintAndLogEx(INFO, "Anticollision " _GREEN_("ok"));
    } else {
        res = DesfireSelectAIDHex(dctx, aid, false, 0);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire select " _RED_("error") ".");
            return 200;
        }
        if (verbose)
            PrintAndLogEx(INFO, "App %06x " _GREEN_("selected"), aid);
    }

    if (isosw)
        dctx->cmdSet = DCCISO;

    if (noauth == false) {
        res = DesfireAuthenticate(dctx, secureChannel, verbose);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire authenticate " _RED_("error") ". Result: [%d] %s", res, DesfireAuthErrorToStr(res));
            return res;
        }

        if (DesfireIsAuthenticated(dctx)) {
            if (verbose)
                PrintAndLogEx(INFO, "Desfire  " _GREEN_("authenticated"));
        } else {
            return 201;
        }
    }

    return PM3_SUCCESS;
}

int DesfireSelectAndAuthenticate(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, uint32_t aid, bool verbose) {
    return DesfireSelectAndAuthenticateEx(dctx, secureChannel, aid, false, verbose);
}

int DesfireSelectAndAuthenticateW(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, DesfireISOSelectWay way, uint32_t id, bool selectfile, uint16_t isofileid, bool noauth, bool verbose) {
    if (verbose)
        DesfirePrintContext(dctx);

    int res = 0;
    if (way == ISW6bAID && dctx->cmdSet == DCCISO) {
        dctx->cmdSet = DCCNativeISO;
        if (verbose)
            PrintAndLogEx(INFO, "Select via " _CYAN_("native iso wrapping") " interface");

        res = DesfireSelectAIDHex(dctx, id, false, 0);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire select " _RED_("error") ".");
            return 200;
        }
        if (verbose)
            PrintAndLogEx(INFO, "App %06x via native iso channel is " _GREEN_("selected"), id);

        dctx->cmdSet = DCCISO;
    } else {
        res = DesfireSelectEx(dctx, true, way, id, NULL);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire %s select " _RED_("error") ".", DesfireSelectWayToStr(way));
            return 202;
        }
        if (verbose)
            PrintAndLogEx(INFO, "%s is " _GREEN_("selected"), DesfireWayIDStr(way, id));
    }

    if (selectfile) {
        res = DesfireSelectEx(dctx, false, ISWIsoID, isofileid, NULL);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire iso file select " _RED_("error") ".");
            return 203;
        }

        if (verbose)
            PrintAndLogEx(INFO, "Application %s file iso id %04x is " _GREEN_("selected"), DesfireWayIDStr(way, id), isofileid);
    }

    if (!noauth) {
        res = DesfireAuthenticate(dctx, secureChannel, verbose);
        if (res != PM3_SUCCESS) {
            PrintAndLogEx(ERR, "Desfire authenticate " _RED_("error") ". Result: [%d] %s", res, DesfireAuthErrorToStr(res));
            return res;
        }

        if (DesfireIsAuthenticated(dctx)) {
            if (verbose)
                PrintAndLogEx(INFO, "Desfire  " _GREEN_("authenticated"));
        } else {
            return 201;
        }
    }

    return PM3_SUCCESS;
}

int DesfireSelectAndAuthenticateAppW(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, DesfireISOSelectWay way, uint32_t id, bool noauth, bool verbose) {
    return DesfireSelectAndAuthenticateW(dctx, secureChannel, way, id, false, 0, noauth, verbose);
}

int DesfireSelectAndAuthenticateISO(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, bool useaid, uint32_t aid, uint16_t isoappid, bool selectfile, uint16_t isofileid, bool noauth, bool verbose) {
    return DesfireSelectAndAuthenticateW(dctx, secureChannel, useaid ? ISW6bAID : ISWIsoID, useaid ? aid : isoappid, selectfile, isofileid, noauth, verbose);
}

static int DesfireAuthenticateEV1(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, bool verbose) {
    // 3 different way to authenticate   AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32)
    // 4 different crypto arg1   DES, 3DES, 3K3DES, AES
    // 3 different communication modes,  PLAIN,MAC,CRYPTO

    DesfireClearSession(dctx);

    if (secureChannel == DACNone)
        return PM3_SUCCESS;

    uint8_t keybytes[24] = {0};
    // Crypt constants
    uint8_t IV[16] = {0};
    uint8_t RndA[16] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
    uint8_t RndB[16] = {0};
    uint8_t encRndB[16] = {0};
    uint8_t rotRndB[16] = {0};   //RndB'
    uint8_t both[32 + 1] = {0};  // ek/dk_keyNo(RndA+RndB')

    // Part 1
    memcpy(keybytes, dctx->key, desfire_get_key_length(dctx->keyType));

    uint8_t subcommand = MFDES_AUTHENTICATE;
    if (secureChannel == DACEV1) {
        if (dctx->keyType == T_AES)
            subcommand = MFDES_AUTHENTICATE_AES;
        else
            subcommand = MFDES_AUTHENTICATE_ISO;
    }

    size_t recv_len = 0;
    uint8_t respcode = 0;
    uint8_t recv_data[256] = {0};

    if (verbose)
        PrintAndLogEx(INFO, _CYAN_("Auth:") " cmd: 0x%02x keynum: 0x%02x", subcommand, dctx->keyNum);

    // Let's send our auth command
    int res = DesfireExchangeEx(false, dctx, subcommand, &dctx->keyNum, 1, &respcode, recv_data, &recv_len, false, 0);
    if (res != PM3_SUCCESS) {
        return 1;
    }

    if (!recv_len) {
        return 2;
    }

    if (respcode != MFDES_ADDITIONAL_FRAME) {
        return 3;
    }

    uint32_t expectedlen = 8;
    if (dctx->keyType == T_AES || dctx->keyType == T_3K3DES) {
        expectedlen = 16;
    }

    if (recv_len != expectedlen) {
        return 4;
    }

    // Part 2
    uint32_t rndlen = recv_len;
    memcpy(encRndB, recv_data, rndlen);


    // Part 3
    DesfireCryptoEncDecEx(dctx, DCOMainKey, encRndB, rndlen, RndB, false, false, IV);

    if (g_debugMode > 1) {
        PrintAndLogEx(DEBUG, "encRndB: %s", sprint_hex(encRndB, 8));
        PrintAndLogEx(DEBUG, "RndB: %s", sprint_hex(RndB, 8));
    }

    // - Rotate RndB by 8 bits
    memcpy(rotRndB, RndB, rndlen);
    rol(rotRndB, rndlen);

    uint8_t encRndA[16] = {0x00};

    // - Encrypt our response
    if (secureChannel == DACd40) {
        memset(IV, 0, DESFIRE_MAX_CRYPTO_BLOCK_SIZE);
        DesfireCryptoEncDecEx(dctx, DCOMainKey, RndA, rndlen, encRndA, true, true, IV);

        memcpy(both, encRndA, rndlen);
        bin_xor(rotRndB, encRndA, rndlen);

        memset(IV, 0, DESFIRE_MAX_CRYPTO_BLOCK_SIZE);
        DesfireCryptoEncDecEx(dctx, DCOMainKey, rotRndB, rndlen, encRndB, true, true, IV);

        memcpy(both + rndlen, encRndB, rndlen);
    } else if (secureChannel == DACEV1) {
        uint8_t tmp[32] = {0x00};
        memcpy(tmp, RndA, rndlen);
        memcpy(tmp + rndlen, rotRndB, rndlen);
        if (g_debugMode > 1) {
            PrintAndLogEx(DEBUG, "rotRndB: %s", sprint_hex(rotRndB, rndlen));
            PrintAndLogEx(DEBUG, "Both   : %s", sprint_hex(tmp, 32));
        }
        DesfireCryptoEncDecEx(dctx, DCOMainKey, tmp, rndlen * 2, both, true, true, IV);
    }

    uint32_t bothlen = 16;
    if (dctx->keyType == T_AES || dctx->keyType == T_3K3DES) {
        bothlen = 32;
    }

    res = DesfireExchangeEx(false, dctx, MFDES_ADDITIONAL_FRAME, both, bothlen, &respcode, recv_data, &recv_len, false, 0);
    if (res != PM3_SUCCESS) {
        return 7;
    }

    if (!recv_len) {
        return 8;
    }

    if (respcode != MFDES_S_OPERATION_OK) {
        return 9;
    }

    // Part 4
    memcpy(encRndA, recv_data, rndlen);

    //PrintAndLogEx(INFO, "encRndA : %s", sprint_hex(encRndA, rndlen));
    //PrintAndLogEx(INFO, "IV : %s", sprint_hex(IV, rndlen));

    if (secureChannel == DACd40)
        memset(IV, 0, DESFIRE_MAX_CRYPTO_BLOCK_SIZE);
    DesfireCryptoEncDecEx(dctx, DCOMainKey, encRndA, rndlen, encRndA, false, false, IV);

    // generate session key from rnda and rndb. before rol(RndA)!
    DesfireGenSessionKeyEV1(RndA, RndB, dctx->keyType, dctx->sessionKeyEnc);

    rol(RndA, rndlen);
    //PrintAndLogEx(INFO, "Expected_RndA : %s", sprint_hex(RndA, rndlen));
    //PrintAndLogEx(INFO, "Generated_RndA : %s", sprint_hex(encRndA, rndlen));
    for (uint32_t x = 0; x < rndlen; x++) {
        if (RndA[x] != encRndA[x]) {
            if (g_debugMode > 1) {
                PrintAndLogEx(DEBUG, "Expected_RndA : %s", sprint_hex(RndA, rndlen));
                PrintAndLogEx(DEBUG, "Generated_RndA : %s", sprint_hex(encRndA, rndlen));
            }
            return 11;
        }
    }

    // If the 3Des key first 8 bytes = 2nd 8 Bytes then we are really using Singe Des
    // As such we need to set the session key such that the 2nd 8 bytes = 1st 8 Bytes
    if (dctx->keyType == T_3DES) {
        if (memcmp(dctx->key, &dctx->key[8], 8) == 0)
            memcpy(&dctx->sessionKeyEnc[8], dctx->sessionKeyEnc, 8);
    }

    memset(dctx->IV, 0, DESFIRE_MAX_KEY_SIZE);
    dctx->secureChannel = secureChannel;
    memcpy(dctx->sessionKeyMAC, dctx->sessionKeyEnc, desfire_get_key_length(dctx->keyType));
    if (verbose)
        PrintAndLogEx(INFO, _GREEN_("Session key") " : %s", sprint_hex(dctx->sessionKeyEnc, desfire_get_key_length(dctx->keyType)));

    return PM3_SUCCESS;
}

static int DesfireAuthenticateEV2(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, bool firstauth, bool verbose) {
    // Crypt constants
    uint8_t IV[16] = {0};
    uint8_t RndA[CRYPTO_AES_BLOCK_SIZE] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
    uint8_t RndB[CRYPTO_AES_BLOCK_SIZE] = {0};
    uint8_t encRndB[CRYPTO_AES_BLOCK_SIZE] = {0};
    uint8_t rotRndA[CRYPTO_AES_BLOCK_SIZE] = {0};   //RndA'
    uint8_t rotRndB[CRYPTO_AES_BLOCK_SIZE] = {0};   //RndB'
    uint8_t both[CRYPTO_AES_BLOCK_SIZE * 2 + 1] = {0};  // ek/dk_keyNo(RndA+RndB')

    uint8_t subcommand = firstauth ? MFDES_AUTHENTICATE_EV2F : MFDES_AUTHENTICATE_EV2NF;
    uint8_t *key = dctx->key;

    size_t recv_len = 0;
    uint8_t respcode = 0;
    uint8_t recv_data[256] = {0};

    if (verbose)
        PrintAndLogEx(INFO, _CYAN_("Auth %s:") " cmd: 0x%02x keynum: 0x%02x key: %s", (firstauth) ? "first" : "non-first", subcommand, dctx->keyNum, sprint_hex(key, 16));

    // Let's send our auth command
    uint8_t cdata[] = {dctx->keyNum, 0x00};
    int res = DesfireExchangeEx(false, dctx, subcommand, cdata, (firstauth) ? sizeof(cdata) : 1, &respcode, recv_data, &recv_len, false, 0);
    if (res != PM3_SUCCESS) {
        return 1;
    }

    if (!recv_len) {
        return 2;
    }

    if (respcode != MFDES_ADDITIONAL_FRAME) {
        return 3;
    }

    size_t rdataindx = 0;
    if (recv_len != CRYPTO_AES_BLOCK_SIZE) {
        if (recv_len == CRYPTO_AES_BLOCK_SIZE + 1) {
            if (recv_data[0] != 0x00)
                return 50;
            rdataindx = 1;
        } else {
            return 4;
        }
    }

    // Part 2
    memcpy(encRndB, &recv_data[rdataindx], 16);

    // Part 3
    if (aes_decode(IV, key, encRndB, RndB, CRYPTO_AES_BLOCK_SIZE))
        return 5;

    if (g_debugMode > 1) {
        PrintAndLogEx(DEBUG, "encRndB: %s", sprint_hex(encRndB, CRYPTO_AES_BLOCK_SIZE));
        PrintAndLogEx(DEBUG, "RndB: %s", sprint_hex(RndB, CRYPTO_AES_BLOCK_SIZE));
    }

    // - Rotate RndB by 8 bits
    memcpy(rotRndB, RndB, CRYPTO_AES_BLOCK_SIZE);
    rol(rotRndB, CRYPTO_AES_BLOCK_SIZE);

    // - Encrypt our response
    uint8_t tmp[32] = {0x00};
    memcpy(tmp, RndA, CRYPTO_AES_BLOCK_SIZE);
    memcpy(tmp + CRYPTO_AES_BLOCK_SIZE, rotRndB, CRYPTO_AES_BLOCK_SIZE);
    if (g_debugMode > 1) {
        PrintAndLogEx(DEBUG, "rotRndB: %s", sprint_hex(rotRndB, CRYPTO_AES_BLOCK_SIZE));
        PrintAndLogEx(DEBUG, "Both: %s", sprint_hex(tmp, CRYPTO_AES_BLOCK_SIZE * 2));
    }

    if (aes_encode(IV, key, tmp, both, CRYPTO_AES_BLOCK_SIZE * 2))
        return 6;
    if (g_debugMode > 1) {
        PrintAndLogEx(DEBUG, "EncBoth: %s", sprint_hex(both, CRYPTO_AES_BLOCK_SIZE * 2));
    }

    res = DesfireExchangeEx(false, dctx, MFDES_ADDITIONAL_FRAME, both, CRYPTO_AES_BLOCK_SIZE * 2, &respcode, recv_data, &recv_len, false, 0);
    if (res != PM3_SUCCESS) {
        return 7;
    }

    if (!recv_len) {
        return 8;
    }

    if (respcode != MFDES_S_OPERATION_OK) {
        return 9;
    }

    // Part 4
    uint8_t data[32] = {0};

    if (aes_decode(IV, key, recv_data, data, recv_len))
        return 10;

    // rotate rndA to check
    memcpy(rotRndA, RndA, CRYPTO_AES_BLOCK_SIZE);
    rol(rotRndA, CRYPTO_AES_BLOCK_SIZE);

    uint8_t *recRndA = (firstauth) ? &data[4] : data;

    if (memcmp(rotRndA, recRndA, CRYPTO_AES_BLOCK_SIZE) != 0) {
        if (g_debugMode > 1) {
            PrintAndLogEx(DEBUG, "Expected_RndA'  : %s", sprint_hex(rotRndA, CRYPTO_AES_BLOCK_SIZE));
            PrintAndLogEx(DEBUG, "Generated_RndA' : %s", sprint_hex(recRndA, CRYPTO_AES_BLOCK_SIZE));
        }
        return 11;
    }

    if (firstauth) {
        dctx->cmdCntr = 0;
        memcpy(dctx->TI, data, 4);
    }
    DesfireClearIV(dctx);
    DesfireGenSessionKeyEV2(dctx->key, RndA, RndB, true, dctx->sessionKeyEnc);
    DesfireGenSessionKeyEV2(dctx->key, RndA, RndB, false, dctx->sessionKeyMAC);
    dctx->secureChannel = secureChannel;

    if (verbose) {
        if (firstauth) {
            PrintAndLogEx(INFO, "TI             : %s", sprint_hex(data, 4));
            PrintAndLogEx(INFO, "pic            : %s", sprint_hex(&data[20], 6));
            PrintAndLogEx(INFO, "pcd            : %s", sprint_hex(&data[26], 6));
        } else {
            PrintAndLogEx(INFO, "TI             : %s", sprint_hex(dctx->TI, 4));
        }
        PrintAndLogEx(INFO, "session key ENC: %s", sprint_hex(dctx->sessionKeyEnc, 16));
        PrintAndLogEx(INFO, "session key MAC: %s", sprint_hex(dctx->sessionKeyMAC, 16));
    }

    return PM3_SUCCESS;
}

static int DesfireAuthenticateISO(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, bool verbose) {
    uint8_t rndlen = DesfireGetRndLenForKey(dctx->keyType);

    uint8_t hostrnd[] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
    uint8_t hostrnd2[] = {0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01};

    uint8_t piccrnd[64];
    size_t xlen = 0;
    int res = DesfireISOGetChallenge(dctx, dctx->keyType, piccrnd, &xlen);
    if (res != PM3_SUCCESS)
        return 301;

    if (xlen != rndlen)
        return 302;

    uint8_t both[32] = {0};
    memcpy(both, hostrnd, rndlen);
    memcpy(&both[rndlen], piccrnd, rndlen);

    // encode
    DesfireClearIV(dctx);
    DesfireCryptoEncDec(dctx, DCOMainKey, both, rndlen * 2, both, true); // error 303

    // external authenticate
    res = DesfireISOExternalAuth(dctx, dctx->appSelected, dctx->keyNum, dctx->keyType, both);
    if (res != PM3_SUCCESS)
        return 304;

    // internal authenticate
    uint8_t rnddata[64] = {0};
    xlen = 0;
    res = DesfireISOInternalAuth(dctx, dctx->appSelected, dctx->keyNum, dctx->keyType, hostrnd2, rnddata, &xlen);
    if (res != PM3_SUCCESS)
        return 305;

    if (xlen != rndlen * 2)
        return 306;

    // decode rnddata
    uint8_t piccrnd2[64] = {0};
    DesfireCryptoEncDec(dctx, DCOMainKey, rnddata, rndlen * 2, piccrnd2, false); // error 307

    // check
    if (memcmp(hostrnd2, &piccrnd2[rndlen], rndlen) != 0)
        return 308;

    DesfireGenSessionKeyEV1(hostrnd, piccrnd2, dctx->keyType, dctx->sessionKeyEnc);
    DesfireClearIV(dctx);
    memcpy(dctx->sessionKeyMAC, dctx->sessionKeyEnc, desfire_get_key_length(dctx->keyType));
    dctx->secureChannel = secureChannel;

    if (verbose)
        PrintAndLogEx(INFO, "session key: %s", sprint_hex(dctx->sessionKeyEnc, desfire_get_key_length(dctx->keyType)));

    return PM3_SUCCESS;
}

static int DesfireAuthenticateLRP(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, bool firstauth, bool verbose) {
    // Crypt constants
    uint8_t RndA[CRYPTO_AES_BLOCK_SIZE] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
    uint8_t RndB[CRYPTO_AES_BLOCK_SIZE] = {0};
    uint8_t both[CRYPTO_AES_BLOCK_SIZE * 2 + 1] = {0};

    uint8_t subcommand = firstauth ? MFDES_AUTHENTICATE_EV2F : MFDES_AUTHENTICATE_EV2NF;
    uint8_t *key = dctx->key;

    size_t recv_len = 0;
    uint8_t respcode = 0;
    uint8_t recv_data[256] = {0};

    if (verbose)
        PrintAndLogEx(INFO, _CYAN_("Auth %s:") " cmd: 0x%02x keynum: 0x%02x key: %s", (firstauth) ? "first" : "non-first", subcommand, dctx->keyNum, sprint_hex(key, 16));

    // Let's send our auth command
    uint8_t cdata[] = {dctx->keyNum, 0x01, 0x02};
    int res = DesfireExchangeEx(false, dctx, subcommand, cdata, (firstauth) ? sizeof(cdata) : 1, &respcode, recv_data, &recv_len, false, 0);
    if (res != PM3_SUCCESS) {
        return 1;
    }

    if (!recv_len) {
        return 2;
    }

    if (respcode != MFDES_ADDITIONAL_FRAME) {
        return 3;
    }

    if (recv_len != CRYPTO_AES_BLOCK_SIZE + 1) {
        return 4;
    }

    if (recv_data[0] != 0x01)
        return 51;

    // PICC return RndB in plain
    memcpy(RndB, &recv_data[1], 16);

    if (g_debugMode > 1) {
        PrintAndLogEx(DEBUG, "RndB: %s", sprint_hex(RndB, CRYPTO_AES_BLOCK_SIZE));
    }

    // cmac(sessionkey, rnda+rndb)
    uint8_t sessionkey[32] = {0};
    DesfireGenSessionKeyLRP(key, RndA, RndB, false, sessionkey);

    uint8_t tmp[CRYPTO_AES_BLOCK_SIZE * 4] = {0};
    memcpy(tmp, RndA, CRYPTO_AES_BLOCK_SIZE);
    memcpy(tmp + CRYPTO_AES_BLOCK_SIZE, RndB, CRYPTO_AES_BLOCK_SIZE);

    uint8_t cmac[CRYPTO_AES_BLOCK_SIZE] = {0};
    LRPContext_t ctx = {0};
    LRPSetKey(&ctx, sessionkey, 0, true);
    LRPCMAC(&ctx, tmp, 32, cmac);

    // response = rnda + cmac(sessionkey, rnda+rndb)
    memcpy(both, RndA, CRYPTO_AES_BLOCK_SIZE);
    memcpy(both + CRYPTO_AES_BLOCK_SIZE, cmac, CRYPTO_AES_BLOCK_SIZE);
    if (g_debugMode > 1) {
        PrintAndLogEx(DEBUG, "Both: %s", sprint_hex(tmp, CRYPTO_AES_BLOCK_SIZE * 2));
    }

    res = DesfireExchangeEx(false, dctx, MFDES_ADDITIONAL_FRAME, both, CRYPTO_AES_BLOCK_SIZE * 2, &respcode, recv_data, &recv_len, false, 0);
    if (res != PM3_SUCCESS) {
        return 7;
    }

    if (!recv_len) {
        return 8;
    }

    if (respcode != MFDES_S_OPERATION_OK) {
        return 9;
    }

    // Part 4
    uint8_t data[64] = {0};

    // clear IV here
    DesfireClearIV(dctx);

    // check mac
    memcpy(tmp, RndB, CRYPTO_AES_BLOCK_SIZE);
    memcpy(tmp + CRYPTO_AES_BLOCK_SIZE, RndA, CRYPTO_AES_BLOCK_SIZE);
    if (firstauth)
        memcpy(tmp + CRYPTO_AES_BLOCK_SIZE * 2, recv_data, CRYPTO_AES_BLOCK_SIZE);

    LRPSetKey(&ctx, sessionkey, 0, true);
    LRPCMAC(&ctx, tmp, (firstauth) ? CRYPTO_AES_BLOCK_SIZE * 3 : CRYPTO_AES_BLOCK_SIZE * 2, cmac);
    uint8_t *recCMAC = &recv_data[(firstauth) ? CRYPTO_AES_BLOCK_SIZE : 0];
    if (memcmp(recCMAC, cmac, CRYPTO_AES_BLOCK_SIZE) != 0) {
        if (g_debugMode > 1) {
            PrintAndLogEx(DEBUG, "Expected cmac  : %s", sprint_hex(recCMAC, CRYPTO_AES_BLOCK_SIZE));
            PrintAndLogEx(DEBUG, "Generated cmac : %s", sprint_hex(cmac, CRYPTO_AES_BLOCK_SIZE));
        }
        return 12;
    }

    // decode data
    if (firstauth) {
        LRPSetKeyEx(&ctx, sessionkey, dctx->IV, 4 * 2, 1, false);
        size_t declen = 0;
        LRPDecode(&ctx, recv_data, 16, data, &declen);
        memcpy(dctx->IV, ctx.counter, 4);

        dctx->cmdCntr = 0;
        memcpy(dctx->TI, data, 4);
    }

    memcpy(dctx->sessionKeyEnc, sessionkey, CRYPTO_AES_BLOCK_SIZE);
    memcpy(dctx->sessionKeyMAC, sessionkey, CRYPTO_AES_BLOCK_SIZE);
    dctx->secureChannel = secureChannel;

    if (verbose) {
        if (firstauth) {
            PrintAndLogEx(INFO, "TI             : %s", sprint_hex(data, 4));
            PrintAndLogEx(INFO, "pic            : %s", sprint_hex(&data[4], 6));
            PrintAndLogEx(INFO, "pcd            : %s", sprint_hex(&data[10], 6));
        } else {
            PrintAndLogEx(INFO, "TI             : %s", sprint_hex(dctx->TI, 4));
        }
        PrintAndLogEx(INFO, "session key    : %s", sprint_hex(dctx->sessionKeyEnc, 16));
    }

    return PM3_SUCCESS;
}


int DesfireAuthenticate(DesfireContext_t *dctx, DesfireSecureChannel secureChannel, bool verbose) {
    if (dctx->kdfAlgo == MFDES_KDF_ALGO_AN10922) {
        MifareKdfAn10922(dctx, DCOMasterKey, dctx->kdfInput, dctx->kdfInputLen);
        PrintAndLogEx(DEBUG, " Derrived key: " _GREEN_("%s"), sprint_hex(dctx->key, desfire_get_key_block_length(dctx->keyType)));
    } else if (dctx->kdfAlgo == MFDES_KDF_ALGO_GALLAGHER) {
        // We will overrite any provided KDF input since a gallagher specific KDF was requested.
        dctx->kdfInputLen = 11;

        if (mfdes_kdf_input_gallagher(dctx->uid, dctx->uidlen, dctx->keyNum, dctx->selectedAID, dctx->kdfInput, &dctx->kdfInputLen) != PM3_SUCCESS) {
            PrintAndLogEx(FAILED, "Could not generate Gallagher KDF input");
        }
        PrintAndLogEx(DEBUG, "    KDF Input: " _YELLOW_("%s"), sprint_hex(dctx->kdfInput, dctx->kdfInputLen));

        MifareKdfAn10922(dctx, DCOMasterKey, dctx->kdfInput, dctx->kdfInputLen);
        PrintAndLogEx(DEBUG, " Derrived key: " _GREEN_("%s"), sprint_hex(dctx->key, desfire_get_key_block_length(dctx->keyType)));
    }

    if (dctx->cmdSet == DCCISO && secureChannel != DACEV2)
        return DesfireAuthenticateISO(dctx, secureChannel, verbose);

    if (secureChannel == DACd40 || secureChannel == DACEV1)
        return DesfireAuthenticateEV1(dctx, secureChannel, verbose);

    if (secureChannel == DACEV2)
        return DesfireAuthenticateEV2(dctx, secureChannel, (DesfireIsAuthenticated(dctx) == false), verbose); // non first auth if there is a working secure channel

    if (secureChannel == DACLRP)
        return DesfireAuthenticateLRP(dctx, secureChannel, (DesfireIsAuthenticated(dctx) == false), verbose);

    return 100;
}

bool DesfireCheckAuthCmd(DesfireISOSelectWay way, uint32_t appID, uint8_t keyNum, uint8_t authcmd, bool checklrp) {
    size_t recv_len = 0;
    uint8_t respcode = 0;
    uint8_t recv_data[256] = {0};

    DesfireContext_t dctx = {0};
    dctx.keyNum = keyNum;
    dctx.commMode = DCMPlain;
    dctx.cmdSet = DCCNativeISO;

    // if cant select - return false
    int res = DesfireSelect(&dctx, way, appID, NULL);
    if (res != PM3_SUCCESS)
        return false;

    uint8_t data[] = {keyNum, 0x01, (checklrp) ? 0x02 : 0x00};
    uint8_t datalen = (authcmd == MFDES_AUTHENTICATE_EV2F) ? 3 : 1;
    res = DesfireExchangeEx(false, &dctx, authcmd, data, datalen, &respcode, recv_data, &recv_len, false, 0);
    DropField();

    if (checklrp)
        return (res == PM3_SUCCESS && respcode == 0xaf && recv_len == 17 && recv_data[0] == 0x01);
    else
        return (res == PM3_SUCCESS && respcode == 0xaf);
}

static bool DesfireCheckISOAuthCmd(DesfireISOSelectWay way, uint32_t appID, char *dfname, uint8_t keyNum, DesfireCryptoAlgorithm keytype) {

    DesfireContext_t dctx = {0};
    dctx.keyNum = keyNum;
    dctx.commMode = DCMPlain;
    dctx.cmdSet = DCCISO;

    int res = DesfireSelect(&dctx, way, appID, dfname);
    if (res != PM3_SUCCESS)
        return false;

    bool app_level = !DesfireMFSelected(way, appID);
    uint8_t rndlen = DesfireGetRndLenForKey(keytype);

    uint8_t piccrnd[64] = {0};
    size_t xlen = 0;
    res = DesfireISOGetChallenge(&dctx, keytype, piccrnd, &xlen);
    if (res != PM3_SUCCESS || xlen != rndlen)
        return false;

    uint8_t resp[250] = {0};
    size_t resplen = 0;

    uint16_t sw = 0;
    uint8_t p1 = DesfireKeyToISOKey(keytype);
    uint8_t p2 = ((app_level) ? 0x80 : 0x00) | keyNum;
    res = DesfireExchangeISO(false, &dctx, (sAPDU_t) {0x00, ISO7816_EXTERNAL_AUTHENTICATION, p1, p2, rndlen * 2, piccrnd}, 0, resp, &resplen, &sw);
    DropField();
    return (sw == ISO7816_OK || sw == ISO7816_SECURITY_STATUS_NOT_SATISFIED);
}

void DesfireCheckAuthCommands(DesfireISOSelectWay way, uint32_t appID, char *dfname, uint8_t keyNum, AuthCommandsChk_t *authCmdCheck) {
    memset(authCmdCheck, 0, sizeof(AuthCommandsChk_t));

    authCmdCheck->auth = DesfireCheckAuthCmd(way, appID, keyNum, MFDES_AUTHENTICATE, false);
    authCmdCheck->authISO = DesfireCheckAuthCmd(way, appID, keyNum, MFDES_AUTHENTICATE_ISO, false);
    authCmdCheck->authAES = DesfireCheckAuthCmd(way, appID, keyNum, MFDES_AUTHENTICATE_AES, false);
    authCmdCheck->authEV2 = DesfireCheckAuthCmd(way, appID, keyNum, MFDES_AUTHENTICATE_EV2F, false);
    authCmdCheck->authISONative = DesfireCheckISOAuthCmd(way, appID, dfname, keyNum, T_DES);
    authCmdCheck->authLRP = DesfireCheckAuthCmd(way, appID, keyNum, MFDES_AUTHENTICATE_EV2F, true);
    authCmdCheck->checked = true;
}

void DesfireCheckAuthCommandsPrint(AuthCommandsChk_t *authCmdCheck) {
    PrintAndLogEx(SUCCESS, "   Auth.............. %s", authCmdCheck->auth ? _GREEN_("YES") : _RED_("NO"));
    PrintAndLogEx(SUCCESS, "   Auth ISO.......... %s", authCmdCheck->authISO ? _GREEN_("YES") : _RED_("NO"));
    PrintAndLogEx(SUCCESS, "   Auth AES.......... %s", authCmdCheck->authAES ? _GREEN_("YES") : _RED_("NO"));
    PrintAndLogEx(SUCCESS, "   Auth Ev2.......... %s", authCmdCheck->authEV2 ? _GREEN_("YES") : _RED_("NO"));
    PrintAndLogEx(SUCCESS, "   Auth ISO Native... %s", authCmdCheck->authISONative ? _GREEN_("YES") : _RED_("NO"));
    PrintAndLogEx(SUCCESS, "   Auth LRP.......... %s", authCmdCheck->authLRP ? _GREEN_("YES") : _RED_("NO"));
}

int DesfireFillPICCInfo(DesfireContext_t *dctx, PICCInfo_t *PICCInfo, bool deepmode) {
    uint8_t buf[250] = {0};
    size_t buflen = 0;

    uint32_t freemem = 0;
    int res = DesfireGetFreeMem(dctx, &freemem);
    if (res == PM3_SUCCESS)
        PICCInfo->freemem = freemem;
    else
        PICCInfo->freemem = 0xffffffff;

    PICCInfo->keySettings = 0;
    PICCInfo->numKeysRaw = 0;
    PICCInfo->keyVersion0 = 0;
    res = DesfireGetKeySettings(dctx, buf, &buflen);
    if (res == PM3_SUCCESS && buflen >= 2) {
        PICCInfo->keySettings = buf[0];
        PICCInfo->numKeysRaw = buf[1];
        PICCInfo->numberOfKeys = PICCInfo->numKeysRaw & 0x1f;
        if (PICCInfo->numKeysRaw > 0) {
            uint8_t keyNum0 = 0;
            res = DesfireGetKeyVersion(dctx, &keyNum0, 1, buf, &buflen);
            if (res == PM3_SUCCESS && buflen > 0) {
                PICCInfo->keyVersion0 = buf[0];
            }
        }
    }

    // field on-off zone
    if (deepmode)
        DesfireCheckAuthCommands(ISW6bAID, 0x000000, NULL, 0, &PICCInfo->authCmdCheck);

    return PM3_SUCCESS;
}

static int AppListSearchAID(uint32_t appNum, AppListS AppList, size_t appcount) {
    for (int i = 0; i < appcount; i++)
        if (AppList[i].appNum == appNum)
            return i;

    return -1;
}

int DesfireFillAppList(DesfireContext_t *dctx, PICCInfo_t *PICCInfo, AppListS appList, bool deepmode, bool readFiles, bool fillAppSettings) {
    uint8_t buf[250] = {0};
    size_t buflen = 0;

    int res = DesfireGetAIDList(dctx, buf, &buflen);
    if (res != PM3_SUCCESS) {
        PrintAndLogEx(ERR, "Desfire GetAIDList command " _RED_("error") ". Result: %d", res);
        DropField();
        return PM3_ESOFT;
    }

    PICCInfo->appCount = buflen / 3;
    for (int i = 0; i < buflen; i += 3)
        appList[i / 3].appNum = DesfireAIDByteToUint(&buf[i]);

    // result bytes: 3, 2, 1-16. total record size = 24
    res = DesfireGetDFList(dctx, buf, &buflen);
    if (res != PM3_SUCCESS) {
        PrintAndLogEx(WARNING, "Desfire GetDFList command " _RED_("error") ". Result: %d", res);
    } else if (buflen > 0) {
        for (int i = 0; i < buflen; i++) {
            int indx = AppListSearchAID(DesfireAIDByteToUint(&buf[i * 24 + 1]), appList, PICCInfo->appCount);
            if (indx >= 0) {
                appList[indx].appISONum = MemLeToUint2byte(&buf[i * 24 + 1 + 3]);
                memcpy(
                    appList[indx].appDFName,
                    &buf[i * 24 + 1 + 5],
                    // str_nlen((char *)&buf[i * 24 + 1 + 5], 16)
                    16
                );
            }
        }
    }

    // field on-off zone
    DesfireFillPICCInfo(dctx, PICCInfo, deepmode);

    if (fillAppSettings && PICCInfo->appCount > 0) {
        for (int i = 0; i < PICCInfo->appCount; i++) {
            if (i == 0)
                res = DesfireSelectAIDHex(dctx, appList[i].appNum, false, 0);
            else
                res = DesfireSelectAIDHexNoFieldOn(dctx, appList[i].appNum);
            if (res != PM3_SUCCESS)
                continue;

            DesfireGetKeySettings(dctx, buf, &buflen);
            if (res == PM3_SUCCESS && buflen >= 2) {
                appList[i].keySettings = buf[0];
                appList[i].numKeysRaw = buf[1];
                appList[i].numberOfKeys = appList[i].numKeysRaw & 0x1f;
                appList[i].isoFileIDEnabled = ((appList[i].numKeysRaw & 0x20) != 0);
                appList[i].keyType = DesfireKeyTypeToAlgo(appList[i].numKeysRaw >> 6);

                if (appList[i].numberOfKeys > 0)
                    for (uint8_t keyn = 0; keyn < appList[i].numberOfKeys; keyn++) {
                        res = DesfireGetKeyVersion(dctx, &keyn, 1, buf, &buflen);
                        if (res == PM3_SUCCESS && buflen > 0) {
                            appList[i].keyVersions[keyn] = buf[0];
                        }
                    }

                appList[i].filesReaded = false;
                if (readFiles) {
                    res = DesfireFillFileList(dctx, appList[i].fileList, &appList[i].filesCount, &appList[i].isoPresent);
                    appList[i].filesReaded = (res == PM3_SUCCESS);
                }
            }
        }
    }

    // field on-off zone
    if (fillAppSettings && PICCInfo->appCount > 0 && deepmode) {
        for (int i = 0; i < PICCInfo->appCount; i++) {
            DesfireCheckAuthCommands(ISW6bAID, appList[i].appNum, appList[i].appDFName, 0, &appList[i].authCmdCheck);
        }
    }

    return PM3_SUCCESS;
}

void DesfirePrintPICCInfo(DesfireContext_t *dctx, PICCInfo_t *PICCInfo) {
    PrintAndLogEx(SUCCESS, "------------------------------------ " _CYAN_("PICC level") " -------------------------------------");
    if (PICCInfo->freemem == 0xffffffff)
        PrintAndLogEx(SUCCESS, "Applications count: " _GREEN_("%zu") " free memory " _YELLOW_("n/a"), PICCInfo->appCount);
    else
        PrintAndLogEx(SUCCESS, "Applications count: " _GREEN_("%zu") " free memory " _GREEN_("%d") " bytes", PICCInfo->appCount, PICCInfo->freemem);
    if (PICCInfo->authCmdCheck.checked) {
        PrintAndLogEx(SUCCESS, "PICC level auth commands: ");
        DesfireCheckAuthCommandsPrint(&PICCInfo->authCmdCheck);
    }
    if (PICCInfo->numberOfKeys > 0) {
        PrintKeySettings(PICCInfo->keySettings, PICCInfo->numKeysRaw, false, true);
        PrintAndLogEx(SUCCESS, "PICC key 0 version: %d (0x%02x)", PICCInfo->keyVersion0, PICCInfo->keyVersion0);
    }
}

void DesfirePrintAppList(DesfireContext_t *dctx, PICCInfo_t *PICCInfo, AppListS appList) {
    if (PICCInfo->appCount == 0)
        return;

    PrintAndLogEx(NORMAL, "");
    PrintAndLogEx(SUCCESS, "--------------------------------- " _CYAN_("Applications list") " ---------------------------------");

    for (int i = 0; i < PICCInfo->appCount; i++) {
        PrintAndLogEx(SUCCESS, _CYAN_("Application number: 0x%02X"), appList[i].appNum);
        PrintAndLogEx(SUCCESS, "  ISO id.... " _GREEN_("0x%04X"), appList[i].appISONum);
        PrintAndLogEx(SUCCESS, "  DF name... " _GREEN_("%s") " ( %s)", appList[i].appDFName, sprint_hex((uint8_t *)appList[i].appDFName, sizeof(appList[i].appDFName)));

        DesfirePrintAIDFunctions(appList[i].appNum);

        if (PICCInfo->authCmdCheck.checked) {
            PrintAndLogEx(SUCCESS, "Auth commands: ");
            DesfireCheckAuthCommandsPrint(&appList[i].authCmdCheck);
            PrintAndLogEx(SUCCESS, "");
        }

        if (appList[i].numberOfKeys > 0) {
            PrintKeySettings(appList[i].keySettings, appList[i].numKeysRaw, true, true);

            if (appList[i].numberOfKeys > 0) {
                PrintAndLogEx(SUCCESS, "Key versions [0..%d]: " NOLF, appList[i].numberOfKeys - 1);
                for (uint8_t keyn = 0; keyn < appList[i].numberOfKeys; keyn++) {
                    PrintAndLogEx(NORMAL, "%s %02x" NOLF, (keyn == 0) ? "" : ",",  appList[i].keyVersions[keyn]);
                }
                PrintAndLogEx(NORMAL, "\n");
            }

            if (appList[i].filesReaded) {
                PrintAndLogEx(SUCCESS, "Application have " _GREEN_("%zu") " files", appList[i].filesCount);

                if (appList[i].filesCount > 0) {
                    for (int fnum = 0; fnum < appList[i].filesCount; fnum++) {
                        PrintAndLogEx(NORMAL, "");
                        PrintAndLogEx(SUCCESS, "--------------------------------- " _CYAN_("File %02x") " ----------------------------------", appList[i].fileList[fnum].fileNum);
                        PrintAndLogEx(SUCCESS, "File ID         : " _GREEN_("%02x"), appList[i].fileList[fnum].fileNum);
                        if (appList[i].isoPresent) {
                            if (appList[i].fileList[fnum].fileISONum != 0)
                                PrintAndLogEx(SUCCESS, "File ISO ID     : %04x", appList[i].fileList[fnum].fileISONum);
                            else
                                PrintAndLogEx(SUCCESS, "File ISO ID     : " _YELLOW_("n/a"));
                        }
                        DesfirePrintFileSettingsExtended(&appList[i].fileList[fnum].fileSettings);
                    }
                }
                PrintAndLogEx(NORMAL, "");
            }
        }
    }
}

static int DesfireCommandEx(DesfireContext_t *dctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *resp, size_t *resplen, int checklength, size_t splitbysize) {
    if (resplen) {
        *resplen = 0;
    }

    uint8_t respcode = 0xFF;

    uint8_t *xresp  = calloc(DESFIRE_BUFFER_SIZE, 1);
    if (xresp == NULL) {
        return PM3_EMALLOC;
    }

    size_t xresplen = 0;
    int res = DesfireExchangeEx(false, dctx, cmd, data, datalen, &respcode, xresp, &xresplen, true, splitbysize);
    if (res != PM3_SUCCESS) {
        free(xresp);
        return res;
    }

    if (respcode != MFDES_S_OPERATION_OK) {
        free(xresp);
        return PM3_EAPDU_FAIL;
    }

    if (checklength >= 0 && xresplen != checklength) {
        free(xresp);
        return PM3_EAPDU_FAIL;
    }

    if (resplen) {
        *resplen = xresplen;
    }

    if (resp) {
        memcpy(resp, xresp, (splitbysize == 0) ? xresplen : xresplen * splitbysize);
    }

    free(xresp);
    return PM3_SUCCESS;
}

static int DesfireCommand(DesfireContext_t *dctx, uint8_t cmd, uint8_t *data, size_t datalen, uint8_t *resp, size_t *resplen, int checklength) {
    return DesfireCommandEx(dctx, cmd, data, datalen, resp, resplen, checklength, 0);
}

static int DesfireCommandNoData(DesfireContext_t *dctx, uint8_t cmd) {
    return DesfireCommand(dctx, cmd, NULL, 0, NULL, NULL, 0);
}

static int DesfireCommandTxData(DesfireContext_t *dctx, uint8_t cmd, uint8_t *data, size_t datalen) {
    return DesfireCommand(dctx, cmd, data, datalen, NULL, NULL, 0);
}

static int DesfireCommandRxData(DesfireContext_t *dctx, uint8_t cmd, uint8_t *resp, size_t *resplen, int checklength) {
    return DesfireCommand(dctx, cmd, NULL, 0, resp, resplen, checklength);
}

int DesfireFormatPICC(DesfireContext_t *dctx) {
    return DesfireCommandNoData(dctx, MFDES_FORMAT_PICC);
}

int DesfireGetFreeMem(DesfireContext_t *dctx, uint32_t *freemem) {
    *freemem = 0;

    uint8_t resp[257] = {0};
    size_t resplen = 0;
    int res = DesfireCommandRxData(dctx, MFDES_GET_FREE_MEMORY, resp, &resplen, 3);
    if (res == PM3_SUCCESS) {
        *freemem = DesfireAIDByteToUint(resp);
    }
    return res;
}

int DesfireReadSignature(DesfireContext_t *dctx, uint8_t sid, uint8_t *resp, size_t *resplen) {
    *resplen = 0;

    uint8_t xresp[257] = {0};
    size_t xresplen = 0;
    uint8_t respcode = 0xff;

    int res = DesfireExchange(dctx, MFDES_READSIG, &sid, 1, &respcode, xresp, &xresplen);
    if (res != PM3_SUCCESS) {
        return res;
    }

    if (respcode != 0x90) {
        return PM3_EAPDU_FAIL;
    }

    memcpy(resp, xresp, xresplen);

    *resplen = xresplen;

    return PM3_SUCCESS;
}

int DesfireGetUID(DesfireContext_t *dctx, uint8_t *resp, size_t *resplen) {
    return DesfireCommandRxData(dctx, MFDES_GET_UID, resp, resplen, -1);
}

int DesfireGetAIDList(DesfireContext_t *dctx, uint8_t *resp, size_t *resplen) {
    return DesfireCommandRxData(dctx, MFDES_GET_APPLICATION_IDS, resp, resplen, -1);
}

int DesfireGetDFList(DesfireContext_t *dctx, uint8_t *resp, size_t *resplen) {
    return DesfireCommandEx(dctx, MFDES_GET_DF_NAMES, NULL, 0, resp, resplen, -1, 24);
}

int DesfireCreateApplication(DesfireContext_t *dctx, uint8_t *appdata, size_t appdatalen) {
    return DesfireCommandTxData(dctx, MFDES_CREATE_APPLICATION, appdata, appdatalen);
}

int DesfireDeleteApplication(DesfireContext_t *dctx, uint32_t aid) {
    uint8_t data[3] = {0};
    DesfireAIDUintToByte(aid, data);
    return DesfireCommandTxData(dctx, MFDES_DELETE_APPLICATION, data, sizeof(data));
}

int DesfireGetKeySettings(DesfireContext_t *dctx, uint8_t *resp, size_t *resplen) {
    return DesfireCommandRxData(dctx, MFDES_GET_KEY_SETTINGS, resp, resplen, -1);
}

int DesfireGetKeyVersion(DesfireContext_t *dctx, uint8_t *data, size_t len, uint8_t *resp, size_t *resplen) {
    return DesfireCommand(dctx, MFDES_GET_KEY_VERSION, data, len, resp, resplen, -1);
}

int DesfireChangeKeySettings(DesfireContext_t *dctx, uint8_t *data, size_t len) {
    return DesfireCommandTxData(dctx, MFDES_CHANGE_KEY_SETTINGS, data, len);
}

int DesfireChangeKeyCmd(DesfireContext_t *dctx, uint8_t *data, size_t datalen, uint8_t *resp, size_t *resplen) {
    return DesfireCommand(dctx, MFDES_CHANGE_KEY, data, datalen, resp, resplen, -1);
}

int DesfireSetConfigurationCmd(DesfireContext_t *dctx, uint8_t *data, size_t len, uint8_t *resp, size_t *resplen) {
    return DesfireCommand(dctx, MFDES_CHANGE_CONFIGURATION, data, len, resp, resplen, -1);
}

int DesfireChangeFileSettings(DesfireContext_t *dctx, uint8_t *data, size_t datalen) {
    return DesfireCommandTxData(dctx, MFDES_CHANGE_FILE_SETTINGS, data, datalen);
}

int DesfireGetFileIDList(DesfireContext_t *dctx, uint8_t *resp, size_t *resplen) {
    return DesfireCommandRxData(dctx, MFDES_GET_FILE_IDS, resp, resplen, -1);
}

int DesfireGetFileISOIDList(DesfireContext_t *dctx, uint8_t *resp, size_t *resplen) {
    return DesfireCommandRxData(dctx, MFDES_GET_ISOFILE_IDS, resp, resplen, -1);
}

int DesfireGetFileSettings(DesfireContext_t *dctx, uint8_t fileid, uint8_t *resp, size_t *resplen) {
    return DesfireCommand(dctx, MFDES_GET_FILE_SETTINGS, &fileid, 1, resp, resplen, -1);
}

int DesfireFileSettingsStruct(DesfireContext_t *dctx, uint8_t fileid, FileSettings_t *fsettings) {
    uint8_t resp[250] = {0};
    size_t resplen = 0;
    int res = DesfireGetFileSettings(dctx, fileid, resp, &resplen);
    if (res == PM3_SUCCESS && resplen > 0 && fsettings != NULL)
        DesfireFillFileSettings(resp, resplen, fsettings);

    return res;
}

int DesfireFillFileList(DesfireContext_t *dctx, FileList_t FileList, size_t *filescount, bool *isopresent) {
    uint8_t buf[APDU_RES_LEN] = {0};
    size_t buflen = 0;

    *filescount = 0;
    *isopresent = false;
    memset(FileList, 0, sizeof(FileList_t));

    int res = DesfireGetFileIDList(dctx, buf, &buflen);
    if (res != PM3_SUCCESS) {
        PrintAndLogEx(ERR, "Desfire GetFileIDList command " _RED_("error") ". Result: %d", res);
        return PM3_ESOFT;
    }

    if (buflen == 0)
        return PM3_SUCCESS;

    for (int i = 0; i < buflen; i++) {
        FileList[i].fileNum = buf[i];
        DesfireFileSettingsStruct(dctx, FileList[i].fileNum, &FileList[i].fileSettings);
    }
    *filescount = buflen;

    buflen = 0;
    res = DesfireGetFileISOIDList(dctx, buf, &buflen);
    if (res != PM3_SUCCESS) {
        PrintAndLogEx(ERR, "Desfire GetFileISOIDList command " _RED_("error") ". Result: %d", res);
    }

    size_t isoindx = 0;
    if (buflen > 0) {
        for (int i = 0; i < *filescount; i++) {
            if (FileList[i].fileSettings.fileType != 0x02 && FileList[i].fileSettings.fileType != 0x05) {
                FileList[i].fileISONum = MemLeToUint2byte(&buf[isoindx * 2]);
                isoindx++;
            }
        }

        if (isoindx * 2 != buflen)
            PrintAndLogEx(WARNING, "Wrong ISO ID list length. must be %zu but %zu", buflen, isoindx * 2);
    } else {
        PrintAndLogEx(WARNING, "ISO ID list returned no data");
    }

    *isopresent = (isoindx > 0);

    return PM3_SUCCESS;
}

int DesfireCreateFile(DesfireContext_t *dctx, uint8_t ftype, uint8_t *fdata, size_t fdatalen, bool checklen) {
    const DesfireCreateFileCommands_t *rcmd = GetDesfireFileCmdRec(ftype);
    if (rcmd == NULL)
        return -100;
    if (checklen && fdatalen != (rcmd->createlen + 1) && fdatalen != (rcmd->createlen + 1 + (rcmd->mayHaveISOfid ? 2 : 0)))
        return -110;

    return DesfireCommandTxData(dctx, rcmd->cmd, fdata, fdatalen);
}

int DesfireDeleteFile(DesfireContext_t *dctx, uint8_t fnum) {
    return DesfireCommandTxData(dctx, MFDES_DELETE_FILE, &fnum, 1);
}

int DesfireClearRecordFile(DesfireContext_t *dctx, uint8_t fnum) {
    return DesfireCommandTxData(dctx, MFDES_CLEAR_RECORD_FILE, &fnum, 1);
}

int DesfireCommitReaderID(DesfireContext_t *dctx, uint8_t *readerid, size_t readeridlen, uint8_t *resp, size_t *resplen) {
    uint8_t rid[16] = {0};
    // command use 16b reader id only
    memcpy(rid, readerid, MIN(readeridlen, 16));
    return DesfireCommand(dctx, MFDES_COMMIT_READER_ID, rid, 16, resp, resplen, -1);
}

int DesfireCommitTransactionEx(DesfireContext_t *dctx, bool enable_options, uint8_t options, uint8_t *resp, size_t *resplen) {
    if (enable_options)
        return DesfireCommand(dctx, MFDES_COMMIT_TRANSACTION, &options, 1, resp, resplen, -1);
    else
        return DesfireCommandNoData(dctx, MFDES_COMMIT_TRANSACTION);
}

int DesfireCommitTransaction(DesfireContext_t *dctx, bool enable_options, uint8_t options) {
    uint8_t resp[250] = {0};
    size_t resplen = 0;
    return DesfireCommitTransactionEx(dctx, enable_options, options, resp, &resplen);
}

int DesfireAbortTransaction(DesfireContext_t *dctx) {
    return DesfireCommandNoData(dctx, MFDES_ABORT_TRANSACTION);
}

int DesfireReadFile(DesfireContext_t *dctx, uint8_t fnum, uint32_t offset, uint32_t len, uint8_t *resp, size_t *resplen) {
    uint8_t data[10] = {0};
    data[0] = fnum;
    Uint3byteToMemLe(&data[1], offset);
    Uint3byteToMemLe(&data[4], len);
    return DesfireCommand(dctx, (dctx->isoChaining) ? MFDES_READ_DATA2 : MFDES_READ_DATA, data, 7, resp, resplen, -1);
}

int DesfireWriteFile(DesfireContext_t *dctx, uint8_t fnum, uint32_t offset, uint32_t len, uint8_t *data) {
    uint8_t xdata[1024] = {0};
    xdata[0] = fnum;
    Uint3byteToMemLe(&xdata[1], offset);
    Uint3byteToMemLe(&xdata[4], len);
    memcpy(&xdata[7], data, len);

    return DesfireCommandTxData(dctx, (dctx->isoChaining) ? MFDES_WRITE_DATA2 : MFDES_WRITE_DATA, xdata, 7 + len);
}

int DesfireValueFileOperations(DesfireContext_t *dctx, uint8_t fid, uint8_t operation, uint32_t *value) {
    uint8_t data[10] = {0};
    data[0] = fid;
    size_t datalen = (operation == MFDES_GET_VALUE) ? 1 : 5;
    if (value)
        Uint4byteToMemLe(&data[1], *value);

    uint8_t resp[250] = {0};
    size_t resplen = 0;

    int res = DesfireCommand(dctx, operation, data, datalen, resp, &resplen, -1);

    if (resplen == 4 && value) {
        *value = MemLeToUint4byte(resp);
    }
    return res;
}

int DesfireReadRecords(DesfireContext_t *dctx, uint8_t fnum, uint32_t recnum, uint32_t reccount, uint8_t *resp, size_t *resplen) {
    uint8_t data[10] = {0};
    data[0] = fnum;
    Uint3byteToMemLe(&data[1], recnum);
    Uint3byteToMemLe(&data[4], reccount);

    return DesfireCommand(dctx, (dctx->isoChaining) ? MFDES_READ_RECORDS2 : MFDES_READ_RECORDS, data, 7, resp, resplen, -1);
}

int DesfireWriteRecord(DesfireContext_t *dctx, uint8_t fnum, uint32_t offset, uint32_t len, uint8_t *data) {
    uint8_t xdata[1024] = {0};
    xdata[0] = fnum;
    Uint3byteToMemLe(&xdata[1], offset);
    Uint3byteToMemLe(&xdata[4], len);
    memcpy(&xdata[7], data, len);

    return DesfireCommandTxData(dctx, (dctx->isoChaining) ? MFDES_WRITE_RECORD2 : MFDES_WRITE_RECORD, xdata, 7 + len);
}

int DesfireUpdateRecord(DesfireContext_t *dctx, uint8_t fnum, uint32_t recnum, uint32_t offset, uint32_t len, uint8_t *data) {
    uint8_t xdata[1024] = {0};
    xdata[0] = fnum;
    Uint3byteToMemLe(&xdata[1], recnum);
    Uint3byteToMemLe(&xdata[4], offset);
    Uint3byteToMemLe(&xdata[7], len);
    memcpy(&xdata[10], data, len);

    return DesfireCommandTxData(dctx, (dctx->isoChaining) ? MFDES_UPDATE_RECORD2 : MFDES_UPDATE_RECORD, xdata, 10 + len);
}

static void PrintKeySettingsPICC(uint8_t keysettings, uint8_t numkeys, bool print2ndbyte) {
    PrintAndLogEx(SUCCESS, "PICC level rights:");
    PrintAndLogEx(SUCCESS, "[%c...] CMK Configuration changeable   : %s", (keysettings & (1 << 3)) ? '1' : '0', (keysettings & (1 << 3)) ? _GREEN_("YES") : _RED_("NO (frozen)"));
    PrintAndLogEx(SUCCESS, "[.%c..] CMK required for create/delete : %s", (keysettings & (1 << 2)) ? '1' : '0', (keysettings & (1 << 2)) ? _GREEN_("NO") : "YES");
    PrintAndLogEx(SUCCESS, "[..%c.] Directory list access with CMK : %s", (keysettings & (1 << 1)) ? '1' : '0', (keysettings & (1 << 1)) ? _GREEN_("NO") : "YES");
    PrintAndLogEx(SUCCESS, "[...%c] CMK is changeable              : %s", (keysettings & (1 << 0)) ? '1' : '0', (keysettings & (1 << 0)) ? _GREEN_("YES") : _RED_("NO (frozen)"));
    PrintAndLogEx(SUCCESS, "");

    if (print2ndbyte) {
        DesfirePrintCardKeyType(numkeys >> 6);
        PrintAndLogEx(SUCCESS, "key count: %d", numkeys & 0x0f);
    }
}

static void PrintKeySettingsApp(uint8_t keysettings, uint8_t numkeys, bool print2ndbyte) {
    // Access rights.
    PrintAndLogEx(SUCCESS, "Application level rights:");
    uint8_t rights = ((keysettings >> 4) & 0x0F);
    switch (rights) {
        case 0x0:
            PrintAndLogEx(SUCCESS, "-- AMK authentication is necessary to change any key (default)");
            break;
        case 0xE:
            PrintAndLogEx(SUCCESS, "-- Authentication with the key to be changed (same KeyNo) is necessary to change a key");
            break;
        case 0xF:
            PrintAndLogEx(SUCCESS, "-- All keys (except AMK,see Bit0) within this application are frozen");
            break;
        default:
            PrintAndLogEx(SUCCESS,
                          "-- Authentication with the specified key " _YELLOW_("(0x%02x)") " is necessary to change any key.\n"
                          "A change key and a PICC master key (CMK) can only be changed after authentication with the master key.\n"
                          "For keys other then the master or change key, an authentication with the same key is needed.",
                          rights & 0x0f
                         );
            break;
    }

    PrintAndLogEx(SUCCESS, "[%c...] AMK Configuration changeable   : %s", (keysettings & (1 << 3)) ? '1' : '0', (keysettings & (1 << 3)) ? _GREEN_("YES") : _RED_("NO (frozen)"));
    PrintAndLogEx(SUCCESS, "[.%c..] AMK required for create/delete : %s", (keysettings & (1 << 2)) ? '1' : '0', (keysettings & (1 << 2)) ? _GREEN_("NO") : "YES");
    PrintAndLogEx(SUCCESS, "[..%c.] Directory list access with AMK : %s", (keysettings & (1 << 1)) ? '1' : '0', (keysettings & (1 << 1)) ? _GREEN_("NO") : "YES");
    PrintAndLogEx(SUCCESS, "[...%c] AMK is changeable              : %s", (keysettings & (1 << 0)) ? '1' : '0', (keysettings & (1 << 0)) ? _GREEN_("YES") : _RED_("NO (frozen)"));
    PrintAndLogEx(SUCCESS, "");

    if (print2ndbyte) {
        DesfirePrintCardKeyType(numkeys >> 6);
        PrintAndLogEx(SUCCESS, "key count: %d", numkeys & 0x0f);
        if (numkeys & 0x20)
            PrintAndLogEx(SUCCESS, "iso file id: enabled");
        PrintAndLogEx(SUCCESS, "");
    }
}

void PrintKeySettings(uint8_t keysettings, uint8_t numkeys, bool applevel, bool print2ndbyte) {
    if (applevel)
        PrintKeySettingsApp(keysettings, numkeys, print2ndbyte);
    else
        PrintKeySettingsPICC(keysettings, numkeys, print2ndbyte);
}

static const char *DesfireUnknownStr = "unknown";
static const char *DesfireDisabledStr = "disabled";
static const char *DesfireFreeStr = "free";
static const char *DesfireNAStr = "n/a";
static const DesfireCreateFileCommands_t DesfireFileCommands[] = {
    {0x00, "Standard data",   MFDES_CREATE_STD_DATA_FILE,       6,  6, true},
    {0x01, "Backup data",     MFDES_CREATE_BACKUP_DATA_FILE,    6,  6, true},
    {0x02, "Value",           MFDES_CREATE_VALUE_FILE,         16, 16, false},
    {0x03, "Linear Record",   MFDES_CREATE_LINEAR_RECORD_FILE, 12,  9, true},
    {0x04, "Cyclic Record",   MFDES_CREATE_CYCLIC_RECORD_FILE, 12,  9, true},
    {0x05, "Transaction MAC", MFDES_CREATE_TRANS_MAC_FILE,      5, 21, false},
};

const DesfireCreateFileCommands_t *GetDesfireFileCmdRec(uint8_t type) {
    for (int i = 0; i < ARRAYLEN(DesfireFileCommands); i++) {
        if (DesfireFileCommands[i].id == type) {
            return &DesfireFileCommands[i];
        }
    }
    return NULL;
}

const char *GetDesfireFileType(uint8_t type) {
    const DesfireCreateFileCommands_t *res = GetDesfireFileCmdRec(type);
    if (res != NULL)
        return res->text;
    else
        return DesfireUnknownStr;
}

static const char *DesfireCommunicationModes[] = {
    "Plain",
    "MAC",
    "Plain rfu",
    "Full",
};

static const char *GetDesfireCommunicationMode(uint8_t mode) {
    if (mode < ARRAYLEN(DesfireCommunicationModes))
        return DesfireCommunicationModes[mode];
    else
        return DesfireUnknownStr;
}

static const char *DesfireKeyTypeStr[] = {
    "2tdea",
    "3tdea",
    "aes",
    "rfu",
};

static const char *GetDesfireKeyType(uint8_t keytype) {
    if (keytype < ARRAYLEN(DesfireKeyTypeStr))
        return DesfireKeyTypeStr[keytype];
    else
        return DesfireUnknownStr;
}

const char *GetDesfireAccessRightStr(uint8_t right) {

    if (right <= 0x0d) {
        static char int_access_str[200];
        snprintf(int_access_str, sizeof(int_access_str), "key 0x%02x", right);
        return int_access_str;
    }

    if (right == 0x0e)
        return DesfireFreeStr;

    if (right == 0x0f)
        return DesfireDisabledStr;

    return DesfireUnknownStr;
}

const char *AccessRightShortStr[] = {
    "key0",
    "key1",
    "key2",
    "key3",
    "key4",
    "key5",
    "key6",
    "key7",
    "key8",
    "key9",
    "keyA",
    "keyB",
    "keyC",
    "keyD",
    "free",
    "deny"
};

const char *GetDesfireAccessRightShortStr(uint8_t right) {
    if (right > 0x0F) {
        return DesfireNAStr;
    }

    return AccessRightShortStr[right];
}

void DesfireEncodeFileAcessMode(uint8_t *mode, uint8_t r, uint8_t w, uint8_t rw, uint8_t ch) {
    mode[0] = (ch & 0x0f) | ((rw << 4) & 0xf0);
    mode[1] = (w & 0x0f) | ((r << 4) & 0xf0);
}

void DesfireDecodeFileAcessMode(const uint8_t *mode, uint8_t *r, uint8_t *w, uint8_t *rw, uint8_t *ch) {
    // read
    if (r)
        *r = (mode[1] >> 4) & 0x0F; // hi 2b
    // write
    if (w)
        *w = mode[1] & 0x0F;
    // read/write
    if (rw)
        *rw = (mode[0] >> 4) & 0x0F; // low 2b
    // change
    if (ch)
        *ch = mode[0] & 0x0F;
}

void DesfirePrintAccessRight(uint8_t *data) {
    uint8_t r = 0, w = 0, rw = 0, ch = 0;
    DesfireDecodeFileAcessMode(data, &r, &w, &rw, &ch);
    PrintAndLogEx(SUCCESS, "  read......... %s", GetDesfireAccessRightStr(r));
    PrintAndLogEx(SUCCESS, "  write........ %s", GetDesfireAccessRightStr(w));
    PrintAndLogEx(SUCCESS, "  read/write... %s", GetDesfireAccessRightStr(rw));
    PrintAndLogEx(SUCCESS, "  change....... %s", GetDesfireAccessRightStr(ch));
}

void DesfireFillFileSettings(uint8_t *data, size_t datalen, FileSettings_t *fsettings) {
    if (fsettings == NULL)
        return;

    memset(fsettings, 0, sizeof(FileSettings_t));

    if (datalen < 4)
        return;

    fsettings->fileType = data[0];
    fsettings->fileOption = data[1];
    fsettings->fileCommMode = data[1] & 0x03;
    fsettings->commMode = DesfireFileCommModeToCommMode(fsettings->fileCommMode);
    fsettings->additionalAccessRightsEn = ((data[1] & 0x80) != 0);
    fsettings->rawAccessRights = MemLeToUint2byte(&data[2]);
    DesfireDecodeFileAcessMode(&data[2], &fsettings->rAccess, &fsettings->wAccess, &fsettings->rwAccess, &fsettings->chAccess);

    int reclen = 0;
    switch (fsettings->fileType) {
        case 0x00:
        case 0x01: {
            fsettings->fileSize = MemLeToUint3byte(&data[4]);
            reclen = 4 + 3;
            break;
        }
        case 0x02: {
            fsettings->lowerLimit = MemLeToUint4byte(&data[4]);
            fsettings->upperLimit = MemLeToUint4byte(&data[8]);
            fsettings->value = MemLeToUint4byte(&data[12]);
            fsettings->limitedCredit = data[16];
            reclen = 4 + 13;
            break;
        }
        case 0x03:
        case 0x04: {
            fsettings->recordSize = MemLeToUint3byte(&data[4]);
            fsettings->maxRecordCount = MemLeToUint3byte(&data[7]);
            fsettings->curRecordCount = MemLeToUint3byte(&data[10]);
            reclen = 4 + 9;
            break;
        }
        case 0x05: {
            fsettings->keyType = data[4];
            fsettings->keyVersion = data[5];
            break;
        }
        default: {
            break;
        }
    }

    if (fsettings->additionalAccessRightsEn && reclen > 0 && datalen > reclen && datalen == reclen + data[reclen] * 2) {
        fsettings->additionalAccessRightsLength = data[reclen];

        for (int i = 0; i < fsettings->additionalAccessRightsLength; i++) {
            fsettings->additionalAccessRights[i] = MemLeToUint2byte(&data[reclen + 1 + i * 2]);
        }
    }
}

static void DesfirePrintShortFileTypeSettings(FileSettings_t *fsettings) {
    switch (fsettings->fileType) {
        case 0x00:
        case 0x01: {
            PrintAndLogEx(NORMAL, "Size " _YELLOW_("%d") " / " _YELLOW_("0x%X") NOLF, fsettings->fileSize, fsettings->fileSize);
            break;
        }
        case 0x02: {
            PrintAndLogEx(NORMAL, "Value [%d .. %d] lim cred: 0x%02x (%d [0x%x]) " NOLF,
                          fsettings->lowerLimit,
                          fsettings->upperLimit,
                          fsettings->limitedCredit,
                          fsettings->value,
                          fsettings->value
                         );
            break;
        }
        case 0x03:
        case 0x04: {
            PrintAndLogEx(NORMAL, "Rec cnt %d/%d size: %d [0x%x]b " NOLF,
                          fsettings->curRecordCount,
                          fsettings->maxRecordCount,
                          fsettings->recordSize,
                          fsettings->recordSize
                         );
            break;
        }
        case 0x05: {
            PrintAndLogEx(NORMAL, "Key type: 0x%02x ver: 0x%02x " NOLF, fsettings->keyType, fsettings->keyVersion);
            break;
        }
        default: {
            break;
        }
    }
}

void DesfirePrintFileSettingsOneLine(FileSettings_t *fsettings) {
    PrintAndLogEx(NORMAL, "(%-5s) " NOLF, GetDesfireCommunicationMode(fsettings->fileCommMode));
    PrintAndLogEx(NORMAL, "[0x%02x] " _CYAN_("%-13s ") NOLF, fsettings->fileType, GetDesfireFileType(fsettings->fileType));

    DesfirePrintShortFileTypeSettings(fsettings);

    PrintAndLogEx(NORMAL, "(%s %s %s %s)",
                  GetDesfireAccessRightShortStr(fsettings->rAccess),
                  GetDesfireAccessRightShortStr(fsettings->wAccess),
                  GetDesfireAccessRightShortStr(fsettings->rwAccess),
                  GetDesfireAccessRightShortStr(fsettings->chAccess));
}

void DesfirePrintFileSettingsTable(bool printheader, uint8_t id, bool isoidavail, uint16_t isoid, FileSettings_t *fsettings) {
    if (printheader) {
        PrintAndLogEx(SUCCESS, " ID |ISO ID| File type            | Mode  | Rights: raw, r w rw ch    | File settings");
        PrintAndLogEx(SUCCESS, "----------------------------------------------------------------------------------------------------------");
    }
    PrintAndLogEx(SUCCESS, " " _GREEN_("%02x") " |" NOLF, id);
    if (isoidavail) {
        if (isoid != 0)
            PrintAndLogEx(NORMAL, " " _CYAN_("%04x") " |" NOLF, isoid);
        else
            PrintAndLogEx(NORMAL, " " _YELLOW_("n/a ") " |" NOLF);
    } else {
        PrintAndLogEx(NORMAL, "      |" NOLF);
    }

    PrintAndLogEx(NORMAL, " 0x%02x " _CYAN_("%-15s") " |" NOLF, fsettings->fileType, GetDesfireFileType(fsettings->fileType));
    PrintAndLogEx(NORMAL, " %-5s |" NOLF, GetDesfireCommunicationMode(fsettings->fileCommMode));

    PrintAndLogEx(NORMAL, " %04x, %-4s %-4s %-4s %-4s |" NOLF,
                  fsettings->rawAccessRights,
                  GetDesfireAccessRightShortStr(fsettings->rAccess),
                  GetDesfireAccessRightShortStr(fsettings->wAccess),
                  GetDesfireAccessRightShortStr(fsettings->rwAccess),
                  GetDesfireAccessRightShortStr(fsettings->chAccess));

    PrintAndLogEx(NORMAL, " " NOLF);
    DesfirePrintShortFileTypeSettings(fsettings);
    PrintAndLogEx(NORMAL, "");
}

void DesfirePrintFileSettingsExtended(FileSettings_t *fsettings) {
    PrintAndLogEx(SUCCESS, "File type       : " _CYAN_("%s") "  [0x%02x]", GetDesfireFileType(fsettings->fileType), fsettings->fileType);
    PrintAndLogEx(SUCCESS, "Comm mode       : %s", GetDesfireCommunicationMode(fsettings->fileCommMode));

    switch (fsettings->fileType) {
        case 0x00:
        case 0x01: {
            PrintAndLogEx(SUCCESS, "File size       : %d [0x%x] bytes", fsettings->fileSize, fsettings->fileSize);
            break;
        }
        case 0x02: {
            PrintAndLogEx(SUCCESS, "Lower limit     : %d [0x%x]", fsettings->lowerLimit, fsettings->lowerLimit);
            PrintAndLogEx(SUCCESS, "Upper limit     : %d [0x%x]", fsettings->upperLimit, fsettings->upperLimit);
            bool limited_credit_enabled = ((fsettings->limitedCredit & 0x01) != 0);
            PrintAndLogEx(SUCCESS, "Limited credit  : [%d - %s] %d (0x%08X)", fsettings->limitedCredit, (limited_credit_enabled) ? "enabled" : "disabled", fsettings->value, fsettings->value);
            PrintAndLogEx(SUCCESS, "GetValue access : %s", ((fsettings->limitedCredit & 0x02) != 0) ? "Free" : "Not Free");
            break;
        }
        case 0x03:
        case 0x04: {
            PrintAndLogEx(SUCCESS, "Record count    : %d [0x%x]", fsettings->curRecordCount, fsettings->curRecordCount);
            PrintAndLogEx(SUCCESS, "Max record count: %d [0x%x]", fsettings->maxRecordCount, fsettings->maxRecordCount);
            PrintAndLogEx(SUCCESS, "Record size     : %d [0x%x] bytes", fsettings->recordSize, fsettings->recordSize);
            break;
        }
        case 0x05: {
            PrintAndLogEx(SUCCESS, "Key type        : 0x%02x", fsettings->keyType);
            PrintAndLogEx(SUCCESS, "Key version     : 0x%02x ", fsettings->keyVersion);
            break;
        }
        default: {
            break;
        }
    }

    PrintAndLogEx(SUCCESS, "Access rights   : %04x  (" NOLF, fsettings->rawAccessRights);
    PrintAndLogEx(NORMAL, "r: %s " NOLF, GetDesfireAccessRightStr(fsettings->rAccess));
    PrintAndLogEx(NORMAL, "w: %s " NOLF, GetDesfireAccessRightStr(fsettings->wAccess));
    PrintAndLogEx(NORMAL, "rw: %s " NOLF, GetDesfireAccessRightStr(fsettings->rwAccess));
    PrintAndLogEx(NORMAL, "change: %s)", GetDesfireAccessRightStr(fsettings->chAccess));
}

static void DesfirePrintFileSettDynPart(uint8_t filetype, uint8_t *data, size_t datalen, uint8_t *dynlen, bool create) {
    switch (filetype) {
        case 0x00:
        case 0x01: {
            int filesize = MemLeToUint3byte(&data[0]);
            PrintAndLogEx(INFO, "File size (bytes)... " _YELLOW_("%d") " / " _YELLOW_("0x%X"), filesize, filesize);
            *dynlen = 3;
            break;
        }
        case 0x02: {
            int lowerlimit = MemLeToUint4byte(&data[0]);
            int upperlimit = MemLeToUint4byte(&data[4]);
            int value = MemLeToUint4byte(&data[8]);
            uint8_t limited_credit_enabled = data[12];

            PrintAndLogEx(INFO, "Lower limit... %d / 0x%08X", lowerlimit, lowerlimit);
            PrintAndLogEx(INFO, "Upper limit... %d / 0x%08X", upperlimit, upperlimit);
            if (create) {
                PrintAndLogEx(INFO, "Value............ %d / 0x%08X", value, value);
                PrintAndLogEx(INFO, "Limited credit... %d - %s"
                              , limited_credit_enabled
                              , ((limited_credit_enabled & 1) != 0) ? "enabled" : "disabled"
                             );
            } else {
                PrintAndLogEx(INFO, "Limited credit... %d - %s %d (0x%08X)"
                              , limited_credit_enabled
                              , ((limited_credit_enabled & 1) != 0) ? "enabled" : "disabled"
                              , value
                              , value
                             );
            }
            PrintAndLogEx(INFO, "GetValue access... %s", ((limited_credit_enabled & 0x02) != 0) ? "Free" : "Not Free");

            *dynlen = 13;
            break;
        }
        case 0x03:
        case 0x04: {
            uint32_t recordsize = MemLeToUint3byte(&data[0]);
            uint32_t maxrecords = MemLeToUint3byte(&data[3]);
            uint32_t currentrecord = 0;
            if (create == false)
                currentrecord = MemLeToUint3byte(&data[6]);

            PrintAndLogEx(INFO, "Record size....... %d / 0x%X bytes", recordsize, recordsize);
            PrintAndLogEx(INFO, "Max num records... %d / 0x%X", maxrecords, maxrecords);
            PrintAndLogEx(INFO, "Total size........ %d / 0x%X bytes", recordsize * maxrecords, recordsize * maxrecords);
            if (create == false)
                PrintAndLogEx(INFO, "Curr num records... %d / 0x%X", currentrecord, currentrecord);

            *dynlen = (create) ? 6 : 9;
            break;
        }
        case 0x05: {
            PrintAndLogEx(INFO, "Key type [0x%02x] ... %s", data[0], GetDesfireKeyType(data[0]));
            *dynlen = 1;

            if (create) {
                PrintAndLogEx(INFO, "Key... %s", sprint_hex(&data[1], 16));
                *dynlen += 16;
            }

            PrintAndLogEx(INFO, "Key version... %d / 0x%X", data[*dynlen], data[*dynlen]);
            (*dynlen)++;
            break;
        }
        default: {
            break;
        }
    }
}

void DesfirePrintFileSettings(uint8_t *data, size_t len) {
    if (len < 6) {
        PrintAndLogEx(ERR, "Wrong file settings length, expected 6> got %zu ", len);
        return;
    }

    uint8_t filetype = data[0];
    PrintAndLogEx(INFO, "---- " _CYAN_("File settings") " ----");
    PrintAndLogEx(SUCCESS, "File type " _YELLOW_("0x%02x") " ..... %s file", filetype, GetDesfireFileType(filetype));
    PrintAndLogEx(SUCCESS, "File comm mode...... %s", GetDesfireCommunicationMode(data[1] & 0x03));
    bool addaccess = false;
    if (filetype != 0x05) {
        addaccess = ((data[1] & 0x80) != 0);
        PrintAndLogEx(SUCCESS, "Additional access... %s", (addaccess) ? "Yes" : "No");
    }

    PrintAndLogEx(SUCCESS, "Access rights....... %04x", MemLeToUint2byte(&data[2]));
    DesfirePrintAccessRight(&data[2]); // 2 bytes

    uint8_t reclen = 0;
    DesfirePrintFileSettDynPart(filetype, &data[4], len - 4, &reclen, false);
    reclen += 4; // static part

    if (addaccess && filetype != 0x05 && reclen > 0 && len > reclen && len == reclen + data[reclen] * 2) {
        PrintAndLogEx(SUCCESS, "Add access records... %d", data[reclen]);
        for (int i = 0; i < data[reclen] * 2; i += 2) {
            PrintAndLogEx(SUCCESS, "Add access rights : [%d] %04x", i / 2, MemLeToUint2byte(&data[reclen + 1 + i]));
            DesfirePrintAccessRight(&data[reclen + 1 + i]);
        }
    }
}

void DesfirePrintSetFileSettings(uint8_t *data, size_t len) {
    PrintAndLogEx(INFO, "---- " _CYAN_("Set file settings") " ----");
    PrintAndLogEx(SUCCESS, "File comm mode   : %s", GetDesfireCommunicationMode(data[0] & 0x03));

    bool addaccess = ((data[0] & 0x80) != 0);
    PrintAndLogEx(SUCCESS, "Additional access: %s", (addaccess) ? "Yes" : "No");

    PrintAndLogEx(SUCCESS, "Access rights    : %04x", MemLeToUint2byte(&data[1]));
    DesfirePrintAccessRight(&data[1]); //2 bytes

    if (addaccess && len > 3 && len == 4 + data[3] * 2) {
        PrintAndLogEx(SUCCESS, "Add access records: %d", data[3]);
        for (int i = 0; i < data[3] * 2; i += 2) {
            PrintAndLogEx(SUCCESS, "Add access rights : [%d] %04x", i / 2, MemLeToUint2byte(&data[4 + i]));
            DesfirePrintAccessRight(&data[4 + i]);
        }
    }
}

void DesfirePrintCreateFileSettings(uint8_t filetype, uint8_t *data, size_t len) {
    const DesfireCreateFileCommands_t *ftyperec = GetDesfireFileCmdRec(filetype);
    if (ftyperec == NULL) {
        PrintAndLogEx(WARNING, "Unknown file type 0x%02x", filetype);
        return;
    }

    bool isoidpresent = ftyperec->mayHaveISOfid && (len == ftyperec->createlen + 2 + 1);

    PrintAndLogEx(INFO, "---- " _CYAN_("Create file settings") " ----");
    PrintAndLogEx(SUCCESS, "File type        : %s", ftyperec->text);
    PrintAndLogEx(SUCCESS, "File number      : 0x%02X (%d)", data[0], data[0]);
    size_t xlen = 1;
    if (ftyperec->mayHaveISOfid) {
        if (isoidpresent) {
            PrintAndLogEx(SUCCESS, "File ISO number  : 0x%04X", MemLeToUint2byte(&data[xlen]));
            xlen += 2;
        } else {
            PrintAndLogEx(SUCCESS, "File ISO number  : n/a");
        }
    }

    PrintAndLogEx(SUCCESS, "File comm mode   : %s", GetDesfireCommunicationMode(data[xlen] & 0x03));
    bool addaccess = ((data[xlen] & 0x80) != 0);
    PrintAndLogEx(SUCCESS, "Additional access: %s", (addaccess) ? "Yes" : "No");
    xlen++;

    PrintAndLogEx(SUCCESS, "Access rights    : %04X", MemLeToUint2byte(&data[xlen]));
    DesfirePrintAccessRight(&data[xlen]);
    xlen += 2;

    // https://www.nxp.com/docs/en/data-sheet/MF2DLHX0.pdf
    // page 14
    // TransactionMAC file
    if (filetype == 0x05) {
        uint8_t read = 0;
        uint8_t write = 0;
        uint8_t readwrite = 0;
        uint8_t change = 0;
        DesfireDecodeFileAcessMode(&data[xlen - 2], &read, &write, &readwrite, &change);
        if (write != 0x0f)
            PrintAndLogEx(WARNING, "descr.   : Write right should be set to F because write " _RED_("not allowed") ".");

        if (readwrite == 0x0f)
            PrintAndLogEx(SUCCESS, "descr.   : ReadWrite right is %01X, CommitReaderID command disabled", readwrite);
        else if (readwrite == 0x0e)
            PrintAndLogEx(SUCCESS, "descr.   : ReadWrite right is %01X, CommitReaderID command enabled with free access", readwrite);
        else if (readwrite <= 0x04)
            PrintAndLogEx(SUCCESS, "descr.   : ReadWrite right is %01X, CommitReaderID command enabled with key 0x0%01x", readwrite, readwrite);
        else
            PrintAndLogEx(WARNING, "descr.   : ReadWrite right must me 0..4,E,F instead of is %01X.", readwrite);
    }

    uint8_t reclen = 0;
    DesfirePrintFileSettDynPart(filetype, &data[xlen], len - xlen, &reclen, true);
    xlen += reclen;
}

int DesfireChangeKey(DesfireContext_t *dctx, bool change_master_key, uint8_t newkeynum, DesfireCryptoAlgorithm newkeytype, uint32_t newkeyver, uint8_t *newkey, DesfireCryptoAlgorithm oldkeytype, uint8_t *oldkey, bool verbose) {

    uint8_t okeybuf[DESFIRE_MAX_KEY_SIZE] = {0};
    uint8_t nkeybuf[DESFIRE_MAX_KEY_SIZE] = {0};
    uint8_t pckcdata[DESFIRE_MAX_KEY_SIZE + 10] = {0};
    uint8_t *cdata = &pckcdata[2];
    uint8_t keynodata = newkeynum & 0x3f;

    /*
     * Because new crypto methods can be setup only at application creation,
     * changing the card master key to one of them require a key_no tweak.
     */
    if (change_master_key) {
        keynodata |= (DesfireKeyAlgoToType(newkeytype) & 0x03) << 6;
    }

    pckcdata[0] = MFDES_CHANGE_KEY; // TODO
    pckcdata[1] = keynodata;

    // DES -> 2TDEA
    memcpy(okeybuf, oldkey, desfire_get_key_length(oldkeytype));
    if (oldkeytype == T_DES) {
        memcpy(&okeybuf[8], oldkey, 8);
    }

    memcpy(nkeybuf, newkey, desfire_get_key_length(newkeytype));
    size_t nkeylen = desfire_get_key_length(newkeytype);
    if (newkeytype == T_DES) {
        memcpy(&nkeybuf[8], newkey, 8);
        nkeylen = desfire_get_key_length(T_3DES);
    }

    // set key version for DES. if newkeyver > 0xff - setting key version is disabled
    if (newkeytype != T_AES && newkeyver < 0x100) {
        DesfireDESKeySetVersion(nkeybuf, newkeytype, newkeyver);
        if (verbose)
            PrintAndLogEx(INFO, "changed new key: %s [%d] %s", CLIGetOptionListStr(DesfireAlgoOpts, newkeytype), desfire_get_key_length(newkeytype), sprint_hex(nkeybuf, desfire_get_key_length(newkeytype)));
    }

    // xor if we change current auth key
    if (newkeynum == dctx->keyNum) {
        memcpy(cdata, nkeybuf, nkeylen);
    } else {
        memcpy(cdata, nkeybuf, nkeylen);
        bin_xor(cdata, okeybuf, nkeylen);
    }

    // add key version for AES
    size_t cdatalen = nkeylen;
    if (newkeytype == T_AES) {
        cdata[cdatalen] = newkeyver;
        cdatalen++;
    }

    // add crc||crc_new_key
    if (dctx->secureChannel == DACd40) {
        iso14443a_crc_append(cdata, cdatalen);
        cdatalen += 2;
        if (newkeynum != dctx->keyNum) {
            iso14443a_crc(nkeybuf, nkeylen, &cdata[cdatalen]);
            cdatalen += 2;
        }
    } else if (dctx->secureChannel == DACEV1) {
        // EV1 Checksum must cover : <KeyNo> <PrevKey XOR Newkey>  [<AES NewKeyVer>]
        desfire_crc32_append(pckcdata, cdatalen + 2);
        cdatalen += 4;
        if (newkeynum != dctx->keyNum) {
            desfire_crc32(nkeybuf, nkeylen, &cdata[cdatalen]);
            cdatalen += 4;
        }
    } else if (dctx->secureChannel == DACEV2 || dctx->secureChannel == DACLRP) {
        // EV2 : <PrevKey XOR Newkey>  [<AES NewKeyVer>]
        if (newkeynum != dctx->keyNum) {
            desfire_crc32(nkeybuf, nkeylen, &cdata[cdatalen]);
            cdatalen += 4;
        }
    }

    // send command
    uint8_t resp[257] = {0};
    size_t resplen = 0;
    int res = DesfireChangeKeyCmd(dctx, &pckcdata[1], cdatalen + 1, resp, &resplen);

    // check response
    if (res == 0 && resplen > 0)
        res = -20;

    // clear auth
    if (newkeynum == dctx->keyNum)
        DesfireClearSession(dctx);

    return res;
}

int DesfireSetConfiguration(DesfireContext_t *dctx, uint8_t paramid, uint8_t *param, size_t paramlen) {
    uint8_t cdata[200] = {0};
    cdata[0] = MFDES_CHANGE_CONFIGURATION;
    uint8_t *data = &cdata[1];
    data[0] = paramid;
    memcpy(&data[1], param, paramlen);
    size_t datalen = 1 + paramlen;

    // dynamic length
    if (paramid == 0x02 && dctx->commMode == DCMEncrypted)
        dctx->commMode = DCMEncryptedWithPadding;

    // send command
    uint8_t resp[257] = {0};
    size_t resplen = 0;
    int res = DesfireSetConfigurationCmd(dctx, data, datalen, resp, &resplen);

    // check response
    if (res == 0 && resplen > 0)
        res = -20;

    return res;
}

int DesfireISOSelectEx(DesfireContext_t *dctx, bool fieldon, DesfireISOSelectControl cntr, uint8_t *data, uint8_t datalen, uint8_t *resp, size_t *resplen) {
    uint8_t xresp[250] = {0};
    size_t xresplen = 0;
    uint16_t sw = 0;
    int res = DesfireExchangeISO(fieldon, dctx, (sAPDU_t) {0x00, ISO7816_SELECT_FILE, cntr, ((resp == NULL) ? 0x0C : 0x00), datalen, data}, APDU_INCLUDE_LE_00, xresp, &xresplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    if (resp != NULL && resplen != NULL) {
        *resplen = xresplen;
        memcpy(resp, xresp, xresplen);
    }

    DesfireClearSession(dctx);
    dctx->appSelected = !((cntr == ISSMFDFEF && datalen == 0) || (cntr == ISSEFByFileID && datalen == 2 && data[0] == 0 && data[1] == 0));
    dctx->selectedAID = 0;

    return res;
}

int DesfireISOSelect(DesfireContext_t *dctx, DesfireISOSelectControl cntr, uint8_t *data, uint8_t datalen, uint8_t *resp, size_t *resplen) {
    return DesfireISOSelectEx(dctx, true, cntr, data, datalen, resp, resplen);
}

int DesfireISOSelectDF(DesfireContext_t *dctx, char *dfname, uint8_t *resp, size_t *resplen) {
    return DesfireISOSelect(dctx, ISSDFName, (uint8_t *)dfname, str_nlen(dfname, 16), resp, resplen);
}

int DesfireISOGetChallenge(DesfireContext_t *dctx, DesfireCryptoAlgorithm keytype, uint8_t *resp, size_t *resplen) {
    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_GET_CHALLENGE, 0x00, 0x00, 0x00, NULL}, DesfireGetRndLenForKey(keytype), resp, resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireISOExternalAuth(DesfireContext_t *dctx, bool app_level, uint8_t keynum, DesfireCryptoAlgorithm keytype, uint8_t *data) {
    uint8_t p1 = DesfireKeyToISOKey(keytype);
    uint8_t p2 = ((app_level) ? 0x80 : 0x00) | keynum;

    uint8_t resp[250] = {0};
    size_t resplen = 0;

    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_EXTERNAL_AUTHENTICATION, p1, p2, DesfireGetRndLenForKey(keytype) * 2, data}, 0, resp, &resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireISOInternalAuth(DesfireContext_t *dctx, bool app_level, uint8_t keynum, DesfireCryptoAlgorithm keytype, uint8_t *data, uint8_t *resp, size_t *resplen) {
    uint8_t keylen = DesfireGetRndLenForKey(keytype);
    uint8_t p1 = DesfireKeyToISOKey(keytype);
    uint8_t p2 = ((app_level) ? 0x80 : 0x00) | keynum;

    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_INTERNAL_AUTHENTICATION, p1, p2, keylen, data}, keylen * 2, resp, resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireISOReadBinary(DesfireContext_t *dctx, bool use_file_id, uint8_t fileid, uint16_t offset, uint8_t length, uint8_t *resp, size_t *resplen) {
    uint8_t p1 = 0;
    if (use_file_id)
        p1 = 0x80 | (fileid & 0x1f);
    else
        p1 = (offset >> 8) & 0x7f;
    uint8_t p2 = offset & 0xff;

    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_READ_BINARY, p1, p2, 0, NULL}, (length == 0) ? APDU_INCLUDE_LE_00 : length, resp, resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireISOUpdateBinary(DesfireContext_t *dctx, bool use_file_id, uint8_t fileid, uint16_t offset, uint8_t *data, size_t datalen) {
    uint8_t p1 = 0;
    if (use_file_id)
        p1 = 0x80 | (fileid & 0x1f);
    else
        p1 = (offset >> 8) & 0x7f;
    uint8_t p2 = offset & 0xff;

    uint8_t resp[250] = {0};
    size_t resplen = 0;

    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_UPDATE_BINARY, p1, p2, datalen, data}, 0, resp, &resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireISOReadRecords(DesfireContext_t *dctx, uint8_t recordnum, bool read_all_records, uint8_t fileid, uint8_t length, uint8_t *resp, size_t *resplen) {
    uint8_t p2 = ((fileid & 0x1f) << 3) | ((read_all_records) ? 0x05 : 0x04);

    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_READ_RECORDS, recordnum, p2, 0, NULL}, (length == 0) ? APDU_INCLUDE_LE_00 : length, resp, resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireISOAppendRecord(DesfireContext_t *dctx, uint8_t fileid, uint8_t *data, size_t datalen) {
    uint8_t p2 = ((fileid & 0x1f) << 3);

    uint8_t resp[250] = {0};
    size_t resplen = 0;

    uint16_t sw = 0;
    int res = DesfireExchangeISO(false, dctx, (sAPDU_t) {0x00, ISO7816_APPEND_RECORD, 0x00, p2, datalen, data}, 0, resp, &resplen, &sw);
    if (res == PM3_SUCCESS && sw != ISO7816_OK)
        return PM3_ESOFT;

    return res;
}

int DesfireGetCardUID(DesfireContext_t *ctx) {
    iso14a_card_select_t card = {0};

    SendCommandMIX(CMD_HF_ISO14443A_READER, ISO14A_CONNECT, 0, 0, NULL, 0);
    PacketResponseNG resp;
    WaitForResponse(CMD_ACK, &resp);

    memcpy(&card, (iso14a_card_select_t *)resp.data.asBytes, sizeof(iso14a_card_select_t));
    uint64_t select_status = resp.oldarg[0];

    if (select_status == 0 || select_status == 2 || select_status == 3) {
        return PM3_ESOFT;
    }

    memcpy(ctx->uid, card.uid, card.uidlen);
    ctx->uidlen = card.uidlen;

    return PM3_SUCCESS;
}

int DesfireAnticollision(bool verbose) {
    return SelectCard14443A_4(false, verbose, NULL);
}

int DesfireSelectEx(DesfireContext_t *ctx, bool fieldon, DesfireISOSelectWay way, uint32_t id, const char *dfname) {
    uint8_t resp[250] = {0};
    size_t resplen = 0;

    if (way == ISWMF || (way == ISWDFName && dfname == NULL)) {
        return DesfireISOSelectEx(ctx, fieldon, ISSMFDFEF, NULL, 0, resp, &resplen);
    } else if (way == ISW6bAID) {
        if (id == 0x000000 && fieldon)
            return DesfireAnticollision(false);

        DesfireCommandSet cmdset = ctx->cmdSet;
        int res;

        // if we try to select 6b AID via ISO channel - we can only switch the channel via the over channel because there is no equivalent command in the iso commands
        if (ctx->cmdSet == DCCISO)
            ctx->cmdSet = DCCNativeISO;

        if (fieldon)
            res = DesfireSelectAIDHex(ctx, id, false, 0);
        else
            res = DesfireSelectAIDHexNoFieldOn(ctx, id);

        ctx->cmdSet = cmdset;
        return res;
    } else if (way == ISWIsoID) {
        uint8_t data[2] = {0};
        Uint2byteToMemBe(data, id);
        return DesfireISOSelectEx(ctx, fieldon, ISSMFDFEF, data, 2, resp, &resplen);
    } else if (way == ISWDFName) {
        return DesfireISOSelectEx(ctx, fieldon, ISSMFDFEF, NULL, 0, resp, &resplen);
    }
    return PM3_ESOFT;
}

int DesfireSelect(DesfireContext_t *ctx, DesfireISOSelectWay way, uint32_t id, char *dfname) {
    return DesfireSelectEx(ctx, true, way, id, dfname);
}
