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InMemorySymmetricSecurityKey.GenerateDerivedKey Method

Generates a derived key using the specified cryptographic algorithm and parameters for the current key.

Namespace:  System.IdentityModel.Tokens
Assembly:  System.IdentityModel (in System.IdentityModel.dll)

public override byte[] GenerateDerivedKey(
	string algorithm,
	byte[] label,
	byte[] nonce,
	int derivedKeyLength,
	int offset


Type: System.String
A URI that represents the cryptographic algorithm to use to generate the derived key.
Type: System.Byte[]
An array of Byte that contains the label parameter for the cryptographic algorithm.
Type: System.Byte[]
An array of Byte that contains the nonce that is used to create a derived key.
Type: System.Int32
The size of the derived key.
Type: System.Int32
The position at which the derived key is located in the byte array that is returned from this method.

Return Value

Type: System.Byte[]
An array of Byte that contains the derived key.


algorithm is not supported. The supported algorithms is Psha1KeyDerivation.

To specify P-SHA1 as the cryptographic algorithm, use the Psha1KeyDerivation field.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.