org.bouncycastle.crypto.signers

Class DSASigner

public class DSASigner extends Object implements DSA

The Digital Signature Algorithm - as described in "Handbook of Applied Cryptography", pages 452 - 453.
Method Summary
BigInteger[]generateSignature(byte[] message)
generate a signature for the given message using the key we were initialised with.
voidinit(boolean forSigning, CipherParameters param)
booleanverifySignature(byte[] message, BigInteger r, BigInteger s)
return true if the value r and s represent a DSA signature for the passed in message for standard DSA the message should be a SHA-1 hash of the real message to be verified.

Method Detail

generateSignature

public BigInteger[] generateSignature(byte[] message)
generate a signature for the given message using the key we were initialised with. For conventional DSA the message should be a SHA-1 hash of the message of interest.

Parameters: message the message that will be verified later.

init

public void init(boolean forSigning, CipherParameters param)

verifySignature

public boolean verifySignature(byte[] message, BigInteger r, BigInteger s)
return true if the value r and s represent a DSA signature for the passed in message for standard DSA the message should be a SHA-1 hash of the real message to be verified.