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X509AsymmetricSecurityKey.GetSignatureFormatter Method

Gets the formatter algorithm for the digital signature.

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

public override AsymmetricSignatureFormatter GetSignatureFormatter(
	string algorithm
)

Parameters

algorithm
Type: System.String
The formatter algorithm for the digital signature to get an instance of.

Return Value

Type: System.Security.Cryptography.AsymmetricSignatureFormatter
An AsymmetricSignatureDeformatter that represents the formatter algorithm for the digital signature.

ExceptionCondition
NotSupportedException

The X.509 certificate specified in the constructor does not have a private key.

-or-

algorithm is XmlDsigDSAUrl and the private key for the X.509 certificate specified in the constructor is not of type DSA.

-or-

algorithm is XmlDsigRSASHA1Url or RsaSha256Signature and the private key for the X.509 certificate specified in the constructor is not of type RSA.

-or-

algorithm is not supported. The supported algorithms are XmlDsigDSAUrl,

XmlDsigRSASHA1Url, and RsaSha256Signature.

Use the XmlDsigDSAUrl, XmlDsigRSASHA1Url or RsaSha256Signature fields to specify the algorithm parameter.

.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.

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