org.bouncycastle.math.ec.test
Class ECPointTest

java.lang.Object
  junit.framework.Assert
      junit.framework.TestCase
          org.bouncycastle.math.ec.test.ECPointTest

All Implemented Interfaces:

junit.framework.Test

public class ECPointTest

extends junit.framework.TestCase

Test class for ECPoint. All literature values are taken from "Guide to elliptic curve cryptography", Darrel Hankerson, Alfred J. Menezes, Scott Vanstone, 2004, Springer-Verlag New York, Inc.

Nested Class Summary

static class	ECPointTest.F2m Nested class containing sample literature values for F2m.
static class	ECPointTest.Fp Nested class containing sample literature values for Fp.

Constructor Summary

ECPointTest()

Method Summary

void	setUp()
static junit.framework.Test	suite()
void	testAdd() Calls implTestAdd() for Fp and F2m.
void	testAddSubtractMultiplySimple() Calls implTestAddSubtract() for literature values, both for Fp and F2m.
void	testAddSubtractMultiplyTwiceEncoding() Calls implTestAddSubtract(), implTestMultiply and implTestEncoding for the standard elliptic curves as given in SECNamedCurves.
void	testAllPoints() Calls implTestAllPoints() for the small literature curves, both for Fp and F2m.
void	testDecodePointRejectsEmptyEncoding()
void	testExampleFpB0()
void	testLargeMInF2m()
void	testMultiplySmallOrderPoint() Multiplying a point of small odd order used to throw NullPointerException from the WNAF precomputation: the odd-multiples table 1P, 3P, 5P, [] reaches the point at infinity, which the isomorphism-based normalisation of Fp Jacobian curves could not invert, and the table then meets the doubling case too.
void	testPointCreationConsistency() Tests, if inconsistent points can be created, i.e. points with exactly one null coordinate (not permitted).
void	testThreeTimes() Calls implTestThreeTimes() for Fp and F2m.
void	testTwice() Calls implTestTwice() for Fp and F2m.

Methods inherited from class junit.framework.TestCase

countTestCases, createResult, getName, run, run, runBare, runTest, setName, 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

ECPointTest

public ECPointTest()

Method Detail

setUp

public void setUp()

testPointCreationConsistency

public void testPointCreationConsistency()

Tests, if inconsistent points can be created, i.e. points with exactly one null coordinate (not permitted).

testLargeMInF2m

public void testLargeMInF2m()

testAdd

public void testAdd()

Calls implTestAdd() for Fp and F2m.

testTwice

public void testTwice()

Calls implTestTwice() for Fp and F2m.

testThreeTimes

public void testThreeTimes()

Calls implTestThreeTimes() for Fp and F2m.

testAllPoints

public void testAllPoints()

Calls implTestAllPoints() for the small literature curves, both for Fp and F2m.

testAddSubtractMultiplySimple

public void testAddSubtractMultiplySimple()

Calls implTestAddSubtract() for literature values, both for Fp and F2m.

testAddSubtractMultiplyTwiceEncoding

public void testAddSubtractMultiplyTwiceEncoding()

Calls implTestAddSubtract(), implTestMultiply and implTestEncoding for the standard elliptic curves as given in SECNamedCurves.

testExampleFpB0

public void testExampleFpB0()
                     throws java.lang.Exception

Throws:

java.lang.Exception

testMultiplySmallOrderPoint

public void testMultiplySmallOrderPoint()

Multiplying a point of small odd order used to throw NullPointerException from the WNAF precomputation: the odd-multiples table 1P, 3P, 5P, [] reaches the point at infinity, which the isomorphism-based normalisation of Fp Jacobian curves could not invert, and the table then meets the doubling case too. Only a point never checked for order gets here, but the answer should still be the right multiple. Uses BLS12-381's G1 curve, whose cofactor is 3 * 11^2 * []: (0, 2) has order 3, and the 11-torsion comes from random curve points.

testDecodePointRejectsEmptyEncoding

public void testDecodePointRejectsEmptyEncoding()

suite

public static junit.framework.Test suite()