RSAPKCS1SignatureFormatter Class
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RSAPKCS1SignatureFormatter Class

 

Creates an RSA PKCS #1 version 1.5 signature.

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

System.Object
  System.Security.Cryptography.AsymmetricSignatureFormatter
    System.Security.Cryptography.RSAPKCS1SignatureFormatter

<ComVisibleAttribute(True)>
Public Class RSAPKCS1SignatureFormatter
	Inherits AsymmetricSignatureFormatter

NameDescription
System_CAPS_pubmethodRSAPKCS1SignatureFormatter()

Initializes a new instance of the RSAPKCS1SignatureFormatter class.

System_CAPS_pubmethodRSAPKCS1SignatureFormatter(AsymmetricAlgorithm)

Initializes a new instance of the RSAPKCS1SignatureFormatter class with the specified key.

NameDescription
System_CAPS_pubmethodCreateSignature(Byte())

Creates the RSA 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)

Sets the hash algorithm to use for creating the signature.(Overrides AsymmetricSignatureFormatter.SetHashAlgorithm(String).)

System_CAPS_pubmethodSetKey(AsymmetricAlgorithm)

Sets the private key to use for creating the signature.(Overrides AsymmetricSignatureFormatter.SetKey(AsymmetricAlgorithm).)

System_CAPS_pubmethodToString()

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

This class is used to create a digital signature using the RSA algorithm.

Use RSAPKCS1SignatureDeformatter to verify digital signatures with the RSA algorithm.

The following example demonstrates how to create a PKCS #1 version 1.5 signature.

Imports System.Security.Cryptography

Friend Class RSASample

	Shared Sub Main()
		Try
			'Create a new instance of RSACryptoServiceProvider.
			Using rsa As New RSACryptoServiceProvider()
				'The hash to sign.
				Dim hash() As Byte
				Using sha256 As SHA256 = SHA256.Create()
					Dim data() As Byte = { 59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135 }
					hash = sha256.ComputeHash(data)
				End Using

				'Create an RSASignatureFormatter object and pass it the 
				'RSACryptoServiceProvider to transfer the key information.
				Dim RSAFormatter As New RSAPKCS1SignatureFormatter(rsa)

				'Set the hash algorithm to SHA256.
				RSAFormatter.SetHashAlgorithm("SHA256")

				'Create a signature for HashValue and return it.
				Dim SignedHash() As Byte = RSAFormatter.CreateSignature(hash)
			End Using

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

End Class

.NET Framework
Available since 1.1
Windows Phone Silverlight
Available since 7.1

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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