MessageSigner (Bouncy Castle Library 1.54 API Specification)
Date: 2015-12-29

org.bouncycastle.pqc.crypto

## Interface MessageSigner

- All Known Implementing Classes:
    GMSSSigner, RainbowSigner

      public interface MessageSigner

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `byte[]` | `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, byte[] signature)` 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

          byte[] generateSignature(byte[] message)

      sign the passed in message (usually the output of a hash function).
      Parameters:
        `message` - the message to be signed.
      Returns:
        the signature of the message

    - #### verifySignature

          boolean verifySignature(byte[] message,
                                byte[] signature)

      verify the message message against the signature values r and s.
      Parameters:
        `message` - the message that was supposed to have been signed.
        `signature` - the signature of the message