Package org.bouncycastle.crypto.signers

Class DSADigestSigner

  • All Implemented Interfaces:
    Signer
    public class DSADigestSigner
extends java.lang.Object
implements Signer

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      byte[] generateSignature()
      Generate a signature for the message we've been loaded with using the key we were initialised with.
      protected java.math.BigInteger getOrder()  
      void init​(boolean forSigning, CipherParameters parameters)
      Initialise the signer for signing or verification.
      void reset()
      reset the internal state
      void update​(byte input)
      update the internal digest with the byte b
      void update​(byte[] input, int inOff, int length)
      update the internal digest with the byte array in
      boolean verifySignature​(byte[] signature)
      return true if the internal state represents the signature described in the passed in array.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • DSADigestSigner

        public DSADigestSigner​(DSA dsa,
                       Digest digest)

    • Method Detail

      • init

        public void init​(boolean forSigning,
                 CipherParameters parameters)
        Description copied from interface: Signer
        Initialise the signer for signing or verification.
        Specified by:
        init in interface Signer
        Parameters:
        forSigning - true if for signing, false otherwise
        parameters - necessary parameters.

      • update

        public void update​(byte input)
        update the internal digest with the byte b
        Specified by:
        update in interface Signer

      • update

        public void update​(byte[] input,
                   int inOff,
                   int length)
        update the internal digest with the byte array in
        Specified by:
        update in interface Signer

      • generateSignature

        public byte[] generateSignature()
        Generate a signature for the message we've been loaded with using the key we were initialised with.
        Specified by:
        generateSignature in interface Signer

      • verifySignature

        public boolean verifySignature​(byte[] signature)
        Description copied from interface: Signer
        return true if the internal state represents the signature described in the passed in array.
        Specified by:
        verifySignature in interface Signer

      • reset

        public void reset()
        Description copied from interface: Signer
        reset the internal state
        Specified by:
        reset in interface Signer

      • getOrder

        protected java.math.BigInteger getOrder()