org.bouncycastle.pqc.crypto.test

Class XMSSMTPrivateKeyTest

java.lang.Object

junit.framework.Assert

junit.framework.TestCase

org.bouncycastle.pqc.crypto.test.XMSSMTPrivateKeyTest

All Implemented Interfaces:

junit.framework.Test

public class XMSSMTPrivateKeyTest
extends junit.framework.TestCase

Test cases for XMSSMTPrivateKey class.

Constructor Summary

Constructors

Constructor and Description
XMSSMTPrivateKeyTest()

Method Summary

Modifier and Type	Method and Description
void	testEveryIndexRoundTrips() Every index a key can reach still encodes and decodes, and the decoded key still signs verifiably - the compatibility half of testIndexRollbackRejected.
void	testIndexRollbackRejected() A stored XMSS^MT private key whose index has been rolled back while its BDS traversal state stayed advanced is refused at decode.
void	testPrivateKeyParsingSHA256()
void	testPrivateKeySerialisation()

Methods inherited from class junit.framework.TestCase

assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertTrue, assertTrue, countTestCases, createResult, fail, fail, failNotEquals, failNotSame, failSame, format, getName, run, run, runBare, runTest, setName, setUp, tearDown, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

XMSSMTPrivateKeyTest

public XMSSMTPrivateKeyTest()

Method Detail

testIndexRollbackRejected

public void testIndexRollbackRejected()
                               throws java.lang.Exception

A stored XMSS^MT private key whose index has been rolled back while its BDS traversal state stayed advanced is refused at decode. RFC 8391 sec. 1.1 requires each one-time key to be used once, and until this check the rolled-back key was accepted and signed a second message under a one-time key already used - a signature which verified, so nothing surfaced it. The XMSS side has always tied its state to its index; this is the multi-tree counterpart.

Throws:

java.lang.Exception

testEveryIndexRoundTrips

public void testEveryIndexRoundTrips()
                              throws java.lang.Exception

Every index a key can reach still encodes and decodes, and the decoded key still signs verifiably - the compatibility half of testIndexRollbackRejected. A layer whose leaf index is zero legitimately carries the previous subtree's final index, so the binding above has to tolerate that one position; walking the whole key space is what proves it does.

Throws:

java.lang.Exception

testPrivateKeySerialisation

public void testPrivateKeySerialisation()
                                 throws java.lang.Exception

Throws:

java.lang.Exception

testPrivateKeyParsingSHA256

public void testPrivateKeyParsingSHA256()
                                 throws java.lang.Exception

Throws:

java.lang.Exception