Package org.bouncycastle.crypto

Interface DSA

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.math.BigInteger[] generateSignature​(byte[] message)
      sign the passed in message (usually the output of a hash function).
      void init​(boolean forSigning, CipherParameters param)
      initialise the signer for signature generation or signature verification.
      boolean verifySignature​(byte[] message, java.math.BigInteger r, java.math.BigInteger s)
      verify the message message against the signature values r and s.

    • Method Detail

      • init

        void init​(boolean forSigning,
          CipherParameters param)
        initialise the signer for signature generation or signature verification.
        Parameters:
        forSigning - true if we are generating a signature, false otherwise.
        param - key parameters for signature generation.

      • generateSignature

        java.math.BigInteger[] generateSignature​(byte[] message)
        sign the passed in message (usually the output of a hash function).
        Parameters:
        message - the message to be signed.
        Returns:
        two big integers representing the r and s values respectively.

      • verifySignature

        boolean verifySignature​(byte[] message,
                        java.math.BigInteger r,
                        java.math.BigInteger s)
        verify the message message against the signature values r and s.
        Parameters:
        message - the message that was supposed to have been signed.
        r - the r signature value.
        s - the s signature value.