ch.imvs.sdes4j.srtp

Class SrtpCryptoAttribute

java.lang.Object

ch.imvs.sdes4j.CryptoAttribute

ch.imvs.sdes4j.srtp.SrtpCryptoAttribute

public class SrtpCryptoAttribute
extends CryptoAttribute

Security descriptions attribute for SRTP media streams.

Author:

Ingo Bauersachs

Field Summary

Fields inherited from class ch.imvs.sdes4j.CryptoAttribute

cryptoSuite, keyParams, sessionParams, tag

Constructor Summary

Constructors

Constructor and Description
SrtpCryptoAttribute(int tag, SrtpCryptoSuite cryptoSuite, SrtpKeyParam[] keyParams, SrtpSessionParam[] sessionParams) Creates a crypto attribute from already instantiated objects.

Method Summary

Modifier and Type	Method and Description
static SrtpCryptoAttribute	create(String encoded) Creates an SRTP crypto attribute from its textual representation.
static SrtpCryptoAttribute	create(String tag, String cryptoSuite, String keyParams, String sessionParams) Creates an instance of a SrtpCryptoAttribute from SDES attributes (tag, crypto suite, key params and session params).
SrtpCryptoSuite	getCryptoSuite() Gets the identifier that describes the encryption and authentication algorithms (e.g., AES_CM_128_HMAC_SHA1_80) for the transport in question.
SrtpKeyParam[]	getKeyParams() Gets one or more sets of keying material for the crypto-suite in question.
SrtpSessionParam[]	getSessionParams() Gets the additional key parameters for this particular crypto attribute.

Methods inherited from class ch.imvs.sdes4j.CryptoAttribute

create, create, encode, equals, getKeyParamsString, getSessionParamsString, getTag, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SrtpCryptoAttribute

public SrtpCryptoAttribute(int tag,
                           SrtpCryptoSuite cryptoSuite,
                           SrtpKeyParam[] keyParams,
                           SrtpSessionParam[] sessionParams)

Creates a crypto attribute from already instantiated objects.

Parameters:

tag - identifier for this particular crypto attribute

cryptoSuite - identifier that describes the encryption and authentication algorithms

keyParams - one or more sets of keying material

sessionParams - the additional key parameters

Method Detail

create

public static SrtpCryptoAttribute create(String encoded)

Creates an SRTP crypto attribute from its textual representation.

Parameters:

encoded - The textual representation of the attribute.

Returns:

The parsed crypto data.

create

public static SrtpCryptoAttribute create(String tag,
                                         String cryptoSuite,
                                         String keyParams,
                                         String sessionParams)

Creates an instance of a SrtpCryptoAttribute from SDES attributes (tag, crypto suite, key params and session params).

Parameters:

tag - unparsed tag as a string.

cryptoSuite - the crypto suite as an unparsed string.

keyParams - An unparsed string representation of the key param list (each key must be separated by a ";").

sessionParams - An unparsed string representation of the session param list (each key must be separated by a " ").

Returns:

a parsed SRTP crypto attribute.

getCryptoSuite

public SrtpCryptoSuite getCryptoSuite()

Description copied from class: CryptoAttribute

Gets the identifier that describes the encryption and authentication algorithms (e.g., AES_CM_128_HMAC_SHA1_80) for the transport in question.

Overrides:

getCryptoSuite in class CryptoAttribute

Returns:

the cryptoSuite

getKeyParams

public SrtpKeyParam[] getKeyParams()

Description copied from class: CryptoAttribute

Gets one or more sets of keying material for the crypto-suite in question.

Overrides:

getKeyParams in class CryptoAttribute

Returns:

the keyParams

getSessionParams

public SrtpSessionParam[] getSessionParams()

Description copied from class: CryptoAttribute

Gets the additional key parameters for this particular crypto attribute.

Overrides:

getSessionParams in class CryptoAttribute

Returns:

the sessionParams