DSASignatureFormatter Constructor (AsymmetricAlgorithm)

 

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

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

public DSASignatureFormatter(
	AsymmetricAlgorithm key
)

Parameters

key
Type: System.Security.Cryptography.AsymmetricAlgorithm

The instance of the Digital Signature Algorithm (DSA) that holds the key.

Exception Condition
ArgumentNullException

key is null.

using System;
using System.Security.Cryptography;

class DSASample
{

	static void Main()
	{
		try
		{
			//Create a new instance of DSACryptoServiceProvider.
			DSACryptoServiceProvider DSA = new DSACryptoServiceProvider();

			//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 DSASignatureFormatter object and pass it the 
			//DSACryptoServiceProvider to transfer the key information.
			DSASignatureFormatter DSAFormatter = new DSASignatureFormatter(DSA);

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

			//Create a signature for HashValue and return it.
			byte[] SignedHash = DSAFormatter.CreateSignature(Hash);

		}
		catch(CryptographicException e)
		{
			Console.WriteLine(e.Message);
		}
	}

}

.NET Framework
Available since 1.1
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