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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