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.