Class XMSSSigner

java.lang.Object
org.bouncycastle.pqc.crypto.xmss.XMSSSigner
All Implemented Interfaces:
MessageSigner, StateAwareMessageSigner
@Deprecated public class XMSSSigner extends Object implements StateAwareMessageSigner
Deprecated.
use XMSSSigner instead.

  • Constructor Details

    • XMSSSigner

      public XMSSSigner()
      Deprecated.

  • Method Details

    • init

      public void init(boolean forSigning, CipherParameters param)
      Deprecated.
      Initialise for signing or verification. A ParametersWithRandom wrapper is accepted and unwrapped before either branch is entered, the way LMSSigner.init accepts it, so a caller that wraps its key once and drives both sides is not refused by the verification one; the random the wrapper carries is not used. The randomizer r is derived from the key itself - r = PRF(SK_PRF, toByte(idx, 32)), RFC 8391 sec. 4.1.9 - so a SecureRandom supplied here has nothing to drive and is discarded, the way SPHINCS256Signer discards it. On the signing side accepting the wrapper is what BC itself needs: XMSSSignatureSpi.engineInitSign(PrivateKey, SecureRandom) wraps the key whenever a random is supplied, so initSign(key, random) used to fail on the cast.
      Specified by:
      init in interface MessageSigner
      Parameters:
      forSigning - true for signing, false for verification.
      param - the key, optionally wrapped in ParametersWithRandom.

    • generateSignature

      public byte[] generateSignature(byte[] message)
      Deprecated.
      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

    • getUsagesRemaining

      public long getUsagesRemaining()
      Deprecated.

    • verifySignature

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

    • getUpdatedPrivateKey

      public AsymmetricKeyParameter getUpdatedPrivateKey()
      Deprecated.
      Description copied from interface: StateAwareMessageSigner
      Return the current version of the private key with the updated state.

      Note: calling this method will effectively disable the Signer from being used for further signature generation without another call to init().

      Specified by:
      getUpdatedPrivateKey in interface StateAwareMessageSigner
      Returns:
      an updated private key object, which can be used for later signature generation.