DSASignatureFormatter Class

 

Creates a Digital Signature Algorithm (DSA) signature.

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

System.Object
  System.Security.Cryptography.AsymmetricSignatureFormatter
    System.Security.Cryptography.DSASignatureFormatter

<ComVisibleAttribute(True)>
Public Class DSASignatureFormatter
	Inherits AsymmetricSignatureFormatter

NameDescription
System_CAPS_pubmethodDSASignatureFormatter()

Initializes a new instance of the DSASignatureFormatter class.

System_CAPS_pubmethodDSASignatureFormatter(AsymmetricAlgorithm)

Initializes a new instance of the DSASignatureFormatter class with the specified key.

NameDescription
System_CAPS_pubmethodCreateSignature(Byte())

Creates the Digital Signature Algorithm (DSA) PKCS #1 signature for the specified data.(Overrides AsymmetricSignatureFormatter.CreateSignature(Byte()).)

System_CAPS_pubmethodCreateSignature(HashAlgorithm)

Creates the signature from the specified hash value.(Inherited from AsymmetricSignatureFormatter.)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodSetHashAlgorithm(String)

Specifies the hash algorithm for the Digital Signature Algorithm (DSA) signature formatter.(Overrides AsymmetricSignatureFormatter.SetHashAlgorithm(String).)

System_CAPS_pubmethodSetKey(AsymmetricAlgorithm)

Specifies the key to be used for the Digital Signature Algorithm (DSA) signature formatter.(Overrides AsymmetricSignatureFormatter.SetKey(AsymmetricAlgorithm).)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

Imports System
Imports System.Security.Cryptography

 _

Class DSASample


    Shared Sub Main()
        Try
            'Create a new instance of DSACryptoServiceProvider.
            Dim DSA As New DSACryptoServiceProvider()

            'The hash to sign.
            Dim Hash As Byte() = {59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135}

            'Create an DSASignatureFormatter object and pass it the 
            'DSACryptoServiceProvider to transfer the key information.
            Dim DSAFormatter As New DSASignatureFormatter(DSA)

            'Set the hash algorithm to SHA1.
            DSAFormatter.SetHashAlgorithm("SHA1")

            'Create a signature for HashValue and return it.
            Dim SignedHash As Byte() = DSAFormatter.CreateSignature(Hash)

        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub
End Class

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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