org.bouncycastle.crypto.agreement.test
Class JPAKEUtilTest

java.lang.Object
  junit.framework.Assert
      junit.framework.TestCase
          org.bouncycastle.crypto.agreement.test.JPAKEUtilTest

All Implemented Interfaces:

junit.framework.Test

public class JPAKEUtilTest

extends junit.framework.TestCase

Constructor Summary

JPAKEUtilTest()

Method Summary

void	testPrivateExponentsAreBlinded() Every exponent carrying private material is randomised with a multiple of q before it is raised, so each of those calls draws exactly one blinding factor.
void	testValidateGa()
void	testValidateGx4()
void	testValidateMacTag()
void	testValidateMacTagEncoding() The MacTag comparison encodes both sides to the MAC's fixed width so its running time does not depend on the expected - secret-derived - value. calculateMacTag reads the MAC output with the signed BigInteger(byte[]) constructor, so a tag is negative about half the time, and about one tag in 240 has a two's-complement encoding shorter than the MAC.
void	testValidateNotNull()
void	testValidateParticipantIdsDiffer()
void	testValidateParticipantIdsEqual()
void	testValidateZeroKnowledgeProof()

Methods inherited from class junit.framework.TestCase

countTestCases, createResult, getName, run, run, runBare, runTest, setName, setUp, tearDown, toString

Methods inherited from class junit.framework.Assert

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, fail, fail

Methods inherited from class java.lang.Object

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

Constructor Detail

JPAKEUtilTest

public JPAKEUtilTest()

Method Detail

testValidateGx4

public void testValidateGx4()
                     throws CryptoException

Throws:

CryptoException

testValidateGa

public void testValidateGa()
                    throws CryptoException

Throws:

CryptoException

testValidateParticipantIdsDiffer

public void testValidateParticipantIdsDiffer()
                                      throws CryptoException

Throws:

CryptoException

testValidateParticipantIdsEqual

public void testValidateParticipantIdsEqual()
                                     throws CryptoException

Throws:

CryptoException

testValidateMacTag

public void testValidateMacTag()
                        throws CryptoException

Throws:

CryptoException

testValidateMacTagEncoding

public void testValidateMacTagEncoding()
                                throws CryptoException

The MacTag comparison encodes both sides to the MAC's fixed width so its running time does not depend on the expected - secret-derived - value. calculateMacTag reads the MAC output with the signed BigInteger(byte[]) constructor, so a tag is negative about half the time, and about one tag in 240 has a two's-complement encoding shorter than the MAC. Those are the tags a zero-padding fixed-width encoding (BigIntegers.asUnsignedByteArray) fails to round-trip, so enough tags are exercised here to include some, and every one of them has to validate. A tag too wide to be one is rejected.

Throws:

CryptoException

testValidateNotNull

public void testValidateNotNull()

testPrivateExponentsAreBlinded

public void testPrivateExponentsAreBlinded()
                                    throws CryptoException

Every exponent carrying private material is randomised with a multiple of q before it is raised, so each of those calls draws exactly one blinding factor. The values themselves must not move, which is what the plain BigInteger arithmetic here checks - a multiple of the wrong order would change them, and nothing else in the suite would notice.

Throws:

CryptoException

testValidateZeroKnowledgeProof

public void testValidateZeroKnowledgeProof()
                                    throws CryptoException

Throws:

CryptoException