SnovaSigner (Bouncy Castle Library 1.85 API Specification)
Date: 2026-07-12

org.bouncycastle.pqc.crypto.snova

## Class SnovaSigner

- java.lang.Object
- - org.bouncycastle.pqc.crypto.snova.SnovaSigner

- All Implemented Interfaces:
    MessageSigner

      public class SnovaSigner
      extends java.lang.Object
      implements MessageSigner

  Implementation of the Snova digital signature scheme as specified in the Snova documentation. This class provides functionality for both signature generation and verification.

  Snova is a candidate in the NIST Post-Quantum Cryptography: Additional Digital Signature Schemes project, currently in Round 2 of evaluations. For more details about the NIST standardization process, see: NIST PQC Additional Digital Signatures.

  References:

  - Snova Official Website
  - Snova Specification Document
  - Snova Reference Implementation

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `SnovaSigner()`

  - ### Method Summary

    All Methods Instance Methods Concrete 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 value.

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

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

- - ### Constructor Detail

    - #### SnovaSigner

          public SnovaSigner()

  - ### Method Detail

    - #### init

          public void init(boolean forSigning,
                           CipherParameters param)

      Description copied from interface: `MessageSigner`
      initialise the signer for signature generation or signature verification.
      Specified by:
        `init` in interface `MessageSigner`
      Parameters:
        `forSigning` - true if we are generating a signature, false otherwise.
        `param` - key parameters for signature generation.

    - #### generateSignature

          public byte[] generateSignature(byte[] message)

      Description copied from interface: `MessageSigner`
      sign the passed in message (usually the output of a hash function).
      Specified by:
        `generateSignature` in interface `MessageSigner`
      Parameters:
        `message` - the message to be signed.
      Returns:
        the signature of the message

    - #### verifySignature

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

      Description copied from interface: `MessageSigner`
      verify the message message against the signature value.
      Specified by:
        `verifySignature` in interface `MessageSigner`
      Parameters:
        `message` - the message that was supposed to have been signed.
        `signature` - the signature of the message