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InMemorySymmetricSecurityKey.GetDecryptionTransform Method

Gets a transform that decrypts cipher text using the specified cryptographic algorithm.

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

public override ICryptoTransform GetDecryptionTransform(
	string algorithm,
	byte[] iv


Type: System.String
A cryptographic algorithm that decrypts cipher text, such as encrypted XML.
Type: System.Byte[]
An array of Byte that contains the initialization vector (IV) for the specified algorithm.

Return Value

Type: System.Security.Cryptography.ICryptoTransform
An ICryptoTransform that represents the decryption transform.


algorithm is not supported. The supported algorithms are TripleDesEncryption, Aes128Encryption, Aes192Encryption, and Aes256Encryption.

Use the fields that represent decryption algorithms in the SecurityAlgorithms class to specify the algorithm.

.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.