Class FaestSigner

java.lang.Object
org.bouncycastle.pqc.crypto.faest.FaestSigner
All Implemented Interfaces:
MessageSigner
public class FaestSigner extends Object implements MessageSigner
FAEST signature generation and verification engine.

Exposes the standard MessageSigner interface by delegating to the core Faest.sign(byte[], byte[], byte[], byte[], byte[], byte[], FaestParameters) and Faest.verify(byte[], byte[], byte[], byte[], FaestParameters) routines. For signing, a fresh salt (rho) is drawn from the supplied (or default) random source on each invocation; the OWF output needed by the signing algorithm is re‑derived internally from the private key.

References:

  • Constructor Details

    • FaestSigner

      public FaestSigner()

  • Method Details

    • 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