Package org.bouncycastle.pqc.crypto.qtesla

## Class QTESLASigner

- java.lang.Object
- - org.bouncycastle.pqc.crypto.qtesla.QTESLASigner

- All Implemented Interfaces:
    `MessageSigner`

      public class QTESLASigner
      extends java.lang.Object
      implements MessageSigner

  Signer for the qTESLA algorithm (https://qtesla.org/)

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `QTESLASigner()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `byte[]` | `generateSignature​(byte[] message)` | Generate a signature directly for the passed in message.
    `void` | `init​(boolean forSigning, CipherParameters param)` | Initialise the signer.
    `boolean` | `verifySignature​(byte[] message, byte[] signature)` | Verify the signature against the passed in message.

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### QTESLASigner

          public QTESLASigner()

  - ### Method Detail

    - #### init

          public void init​(boolean forSigning,
                           CipherParameters param)

      Initialise the signer.
      Specified by:
        `init` in interface `MessageSigner`
      Parameters:
        `forSigning` - true if we are generating a signature, false otherwise.
        `param` - ParametersWithRandom containing a private key for signature generation, public key otherwise.

    - #### generateSignature

          public byte[] generateSignature​(byte[] message)

      Generate a signature directly for the passed in message.
      Specified by:
        `generateSignature` in interface `MessageSigner`
      Parameters:
        `message` - the message to be signed.
      Returns:
        the signature generated.

    - #### verifySignature

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

      Verify the signature against the passed in message.
      Specified by:
        `verifySignature` in interface `MessageSigner`
      Parameters:
        `message` - the message that was supposed to have been signed.
        `signature` - the signature of the message
      Returns:
        true if the signature passes, false otherwise.