X509AsymmetricSecurityKey.IsSupportedAlgorithm(String) Method

Reference

Definition

Namespace:: System.IdentityModel.Tokens

Assembly:: System.ServiceModel.Primitives.dll

Assembly:: System.IdentityModel.dll

Package:: System.ServiceModel.Primitives v6.0.0

Package:: System.ServiceModel.Primitives v6.2.0

Source:: X509AsymmetricSecurityKey.cs

Source:: X509AsymmetricSecurityKey.cs

Source:: X509AsymmetricSecurityKey.cs

Important

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Gets a value that indicates whether the specified algorithm is supported by this class.

public:
 override bool IsSupportedAlgorithm(System::String ^ algorithm);

public override bool IsSupportedAlgorithm (string algorithm);

override this.IsSupportedAlgorithm : string -> bool

Public Overrides Function IsSupportedAlgorithm (algorithm As String) As Boolean

Parameters

algorithm: String

The cryptographic algorithm.

Returns

Boolean

true when the specified algorithm is XmlDsigDSAUrl, XmlEncRSA15Url, XmlEncRSAOAEPUrl, XmlDsigRSASHA1Url, or RsaSha256Signature and the public key is of the right type; otherwise, false.

Remarks

The IsSupportedAlgorithm method returns true when one of the following is true:

The algorithm parameter is XmlDsigDSAUrl and the public key for the X.509 certificate specified in the constructor is of type DSA.
The algorithm parameter is XmlEncRSA15Url, XmlEncRSAOAEPUrl, XmlDsigRSASHA1Url or RsaSha256Signature and the public key for the X.509 certificate specified in the constructor is of type RSA.

Due to collision problems with SHA1, Microsoft recommends a security model based on SHA256 or better.

Applies to