Class MasterKeys

Class for storing a single SRTP master key, master salt and parameters related to these.

Inheritance
object
MasterKeys
Inherited Members
Namespace: SipLib.RtpCrypto
Assembly: SipLib.dll
Syntax
public class MasterKeys

Constructors

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MasterKeys(string)

Creates a new RtpMaster key object and initializes the MasterKey and the MasterSalt to random values.

Declaration
public MasterKeys(string cryptoSuite)
Parameters
Type Name Description
string cryptoSuite

Crypto suite to be used.

Fields

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KeyDerivationRate

Stores the Key Derivation Rate (KDR). This is a power of 2 that is in the range of 1 to 24. This value specifies the number of packets after which the session keys are recalculated. A value of 0 indicates that the KDR is unspecified. This means that the session keys are only calculated from the master keys once.

Declaration
public ulong KeyDerivationRate
Field Value
Type Description
ulong
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MKI

Master Key Identifier (MKI) for the master key.

Declaration
public uint MKI
Field Value
Type Description
uint
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MasterKey

Contains the bytes of the master key. The key length depends on the AES encryption algorithm being used.

Declaration
public byte[]? MasterKey
Field Value
Type Description
byte[]
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MasterSalt

Contains the bytes of the master salt. The length will always be 14 bytes for the AES-CM and AES-f8 encryption algorithms.

Declaration
public byte[]? MasterSalt
Field Value
Type Description
byte[]
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NumKdrPackets

Specifies the number of packets for the KDR. This value if calculated as 2^KDR.

Declaration
public ulong NumKdrPackets
Field Value
Type Description
ulong
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RtcpMasterKeyCount

The number of RTCP packets that have been sent using this master key.

Declaration
public long RtcpMasterKeyCount
Field Value
Type Description
long
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RtpMasterKeyCount

Number of RTP packets that have been sent using this master key.

Declaration
public long RtpMasterKeyCount
Field Value
Type Description
long

Properties

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CryptoSuite

Gets the crypto suite name

Declaration
public string CryptoSuite { get; }
Property Value
Type Description
string