RSAPKCS1SignatureFormatter Class
Creates an RSA PKCS #1 version 1.5 signature.
For a list of all members of this type, see RSAPKCS1SignatureFormatter Members.
System.Object
System.Security.Cryptography.AsymmetricSignatureFormatter
System.Security.Cryptography.RSAPKCS1SignatureFormatter
[Visual Basic] Public Class RSAPKCS1SignatureFormatter Inherits AsymmetricSignatureFormatter [C#] public class RSAPKCS1SignatureFormatter : AsymmetricSignatureFormatter [C++] public __gc class RSAPKCS1SignatureFormatter : public AsymmetricSignatureFormatter [JScript] public class RSAPKCS1SignatureFormatter extends AsymmetricSignatureFormatter
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Remarks
This class is used to create a digital signature using the RSA algorithm.
Use RSAPKCS1SignatureDeformatter to verify digital signatures with the RSA algorithm.
Example
[Visual Basic] Imports System Imports System.Security.Cryptography _ Class RSASample Shared Sub Main() Try 'Create a new instance of RSACryptoServiceProvider. Dim RSA As New RSACryptoServiceProvider() '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 RSAOPKCS1SignatureFormatter object and pass it the 'RSACryptoServiceProvider to transfer the key information. Dim RSAFormatter As New RSAPKCS1SignatureFormatter(RSA) 'Set the hash algorithm to SHA1. RSAFormatter.SetHashAlgorithm("SHA1") 'Create a signature for HashValue and return it. Dim SignedHash As Byte() = RSAFormatter.CreateSignature(Hash) Catch e As CryptographicException Console.WriteLine(e.Message) End Try End Sub End Class [C#] using System; using System.Security.Cryptography; class RSASample { static void Main() { try { //Create a new instance of RSACryptoServiceProvider. RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); //The hash to sign. byte[] Hash = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100,197,213,134,130,135}; //Create an RSAOPKCS1SignatureFormatter object and pass it the //RSACryptoServiceProvider to transfer the key information. RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA); //Set the hash algorithm to SHA1. RSAFormatter.SetHashAlgorithm("SHA1"); //Create a signature for HashValue and return it. byte[] SignedHash = RSAFormatter.CreateSignature(Hash); } catch(CryptographicException e) { Console.WriteLine(e.Message); } } } [C++] #using <mscorlib.dll> #using <System.dll> using namespace System; using namespace System::Security::Cryptography; int main() { try { //Create a new instance of RSACryptoServiceProvider. RSACryptoServiceProvider* RSA = new RSACryptoServiceProvider(); //The hash to sign. Byte Hash[] = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100,197,213,134,130,135}; //Create an RSAOPKCS1SignatureFormatter object and pass it the //RSACryptoServiceProvider to transfer the key information. RSAPKCS1SignatureFormatter* RSAFormatter = new RSAPKCS1SignatureFormatter(RSA); //Set the hash algorithm to SHA1. RSAFormatter->SetHashAlgorithm(S"SHA1"); //Create a signature for HashValue and return it. Byte SignedHash[] = RSAFormatter->CreateSignature(Hash); } catch (CryptographicException* e) { Console::WriteLine(e->Message); } }
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button
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Requirements
Namespace: System.Security.Cryptography
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: Mscorlib (in Mscorlib.dll)
See Also
RSAPKCS1SignatureFormatter Members | System.Security.Cryptography Namespace | Cryptographic Services