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SignatureDescription Constructor (SecurityElement)

Initializes a new instance of the SignatureDescription class from the specified SecurityElement.

Namespace:  System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)

public SignatureDescription(
	SecurityElement el
)

Parameters

el
Type: System.Security.SecurityElement

The SecurityElement from which to get the algorithms for the signature description.

ExceptionCondition
ArgumentNullException

The el parameter is null.

The following code example demonstrates how to initialize a new SignatureDescription class using a

SecurityElement containing the four algorithms. This code example is part of a larger example provided for the SignatureDescription class.

SecurityElement securityElement = new SecurityElement("DSASignature");

// Create new security elements for the four algorithms.
securityElement.AddChild(new SecurityElement(
    "Key",
    "System.Security.Cryptography.DSACryptoServiceProvider"));
securityElement.AddChild(new SecurityElement(
    "Digest",
    "System.Security.Cryptography.SHA1CryptoServiceProvider")); 
securityElement.AddChild(new SecurityElement(
    "Formatter",
    "System.Security.Cryptography.DSASignatureFormatter"));
securityElement.AddChild(new SecurityElement(
    "Deformatter",
    "System.Security.Cryptography.DSASignatureDeformatter"));

SignatureDescription signatureDescription = 
    new SignatureDescription(securityElement);

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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