Package org.bouncycastle.pqc.crypto.xmss

Class XMSSSigner

java.lang.Object

org.bouncycastle.pqc.crypto.xmss.XMSSSigner

All Implemented Interfaces:

MessageSigner, StateAwareMessageSigner

@Deprecated
public class XMSSSigner
extends java.lang.Object
implements StateAwareMessageSigner

Deprecated.

use XMSSSigner instead.

Constructor Summary

Constructors

Constructor	Description
XMSSSigner()	Deprecated.

Method Summary

Modifier and Type	Method	Description
byte[]	generateSignature(byte[] message)	Deprecated. sign the passed in message (usually the output of a hash function).
AsymmetricKeyParameter	getUpdatedPrivateKey()	Deprecated. Return the current version of the private key with the updated state.
long	getUsagesRemaining()	Deprecated.
void	init(boolean forSigning, CipherParameters param)	Deprecated. Initialise for signing or verification.
boolean	verifySignature(byte[] message, byte[] signature)	Deprecated. 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

XMSSSigner

public XMSSSigner()

Deprecated.

Method Detail

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.