Class SDitHSigner

java.lang.Object
org.bouncycastle.pqc.crypto.sdith.SDitHSigner
All Implemented Interfaces:
MessageSigner
public class SDitHSigner extends Object implements MessageSigner
SDitH (Syndrome-Decoding-in-the-Head) signer for the Hypercube variant.

Implements MessageSigner (one-shot whole-message signing) — the signature scheme hashes the message inside the protocol so there is no benefit to a streaming Signer API. Returned signatures are the raw SDitH signature bytes (the reference KAT generator appends the message itself; that concatenation is left to the caller / a JCA wrapper).

  • Constructor Details

    • SDitHSigner

      public SDitHSigner()

  • 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