RSAPKCS1SignatureFormatter Class
Creates an RSA PKCS #1 version 1.5 signature.
Assembly: mscorlib (in mscorlib.dll)
System.Security.Cryptography.AsymmetricSignatureFormatter
System.Security.Cryptography.RSAPKCS1SignatureFormatter
| Name | Description | |
|---|---|---|
![]() | RSAPKCS1SignatureFormatter() | Initializes a new instance of the RSAPKCS1SignatureFormatter class. |
![]() | RSAPKCS1SignatureFormatter(AsymmetricAlgorithm) | Initializes a new instance of the RSAPKCS1SignatureFormatter class with the specified key. |
| Name | Description | |
|---|---|---|
![]() | CreateSignature(Byte[]) | Creates the RSA PKCS #1 signature for the specified data.(Overrides AsymmetricSignatureFormatter.CreateSignature(Byte[]).) |
![]() | CreateSignature(HashAlgorithm) | Creates the signature from the specified hash value.(Inherited from AsymmetricSignatureFormatter.) |
![]() | Equals(Object) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | MemberwiseClone() | |
![]() | SetHashAlgorithm(String) | Sets the hash algorithm to use for creating the signature.(Overrides AsymmetricSignatureFormatter.SetHashAlgorithm(String).) |
![]() | SetKey(AsymmetricAlgorithm) | Sets the private key to use for creating the signature.(Overrides AsymmetricSignatureFormatter.SetKey(AsymmetricAlgorithm).) |
![]() | ToString() | 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.
using System; using System.Security.Cryptography; class RSASample { static void Main() { try { //Create a new instance of RSACryptoServiceProvider. using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider()) { //The hash to sign. byte[] hash; using (SHA256 sha256 = SHA256.Create()) { byte[] data = new 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); } //Create an RSASignatureFormatter object and pass it the //RSACryptoServiceProvider to transfer the key information. RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(rsa); //Set the hash algorithm to SHA256. RSAFormatter.SetHashAlgorithm("SHA256"); //Create a signature for HashValue and return it. byte[] SignedHash = RSAFormatter.CreateSignature(hash); } } catch (CryptographicException e) { Console.WriteLine(e.Message); } } }
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.

