ch.imvs.sdes4j.srtp

Class KdrSessionParam

java.lang.Object

ch.imvs.sdes4j.srtp.SrtpSessionParam

ch.imvs.sdes4j.srtp.KdrSessionParam

All Implemented Interfaces:

SessionParam

public class KdrSessionParam
extends SrtpSessionParam

KDR specifies the Key Derivation Rate, as described in Section 4.3.1 of [RFC3711]. The value n MUST be a decimal integer in the set {1,2,...,24}, which denotes a power of 2 from 2^1 to 2^24, inclusive; leading zeroes MUST NOT be used. The SRTP key derivation rate controls how frequently a new session key is derived from an SRTP master key(s) [RFC3711] given in the declaration. When the key derivation rate is not specified (i.e., the KDR parameter is omitted), a single initial key derivation is performed [RFC3711].

Author:

Ingo Bauersachs

Constructor Summary

Constructors

Constructor and Description
KdrSessionParam(int kdr) Creates a new instance of this class from a known derivation rate.
KdrSessionParam(String param) Creates a new instance of this class from the textual representation.

Method Summary

Modifier and Type	Method and Description
String	encode() Encodes the information contained in this object for use in the complete crypto attribute.
int	getKeyDerivationRate() The key derivation rate as encoded in the session parameters.
int	getKeyDerivationRateExpanded() The key derivation rate in its exponentiated form.

Methods inherited from class ch.imvs.sdes4j.srtp.SrtpSessionParam

create

Methods inherited from class java.lang.Object

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

Constructor Detail

KdrSessionParam

public KdrSessionParam(int kdr)

Creates a new instance of this class from a known derivation rate.

Parameters:

kdr - The key derivation rate.

KdrSessionParam

public KdrSessionParam(String param)

Creates a new instance of this class from the textual representation.

Parameters:

param - The textual representation of the key derivation rate parameter.

Method Detail

getKeyDerivationRate

public int getKeyDerivationRate()

The key derivation rate as encoded in the session parameters.

Returns:

decimal integer in the set {1,2,...,24}

getKeyDerivationRateExpanded

public int getKeyDerivationRateExpanded()

The key derivation rate in its exponentiated form.

Returns:

integer in the range from 2 to 16'777'216.

encode

public String encode()

Description copied from interface: SessionParam

Encodes the information contained in this object for use in the complete crypto attribute.

Returns:

Textual representation of the session parameter.