Examples with EllipticCurve java.security.spec.EllipticCurve used on opensource projects

Example 26 with EllipticCurve

use of java.security.spec.EllipticCurve in project j2objc by google.

the class EllipticCurveTest method testGetB.

/**
 * Test for <code>getB()</code> method<br>
 * Assertion: returns coefficient <code>b</code><br>
 * Test preconditions: <code>ECFieldF2m</code> instance
 * created using valid parameters<br>
 * Expected: must return coefficient <code>b</code> which is equal
 * to the one passed to the constructor; (both must refer
 * the same object)
 */
public final void testGetB() {
    ECFieldF2m f = new ECFieldF2m(5);
    BigInteger a = BigInteger.valueOf(5L);
    BigInteger b = BigInteger.valueOf(19L);
    EllipticCurve c = new EllipticCurve(f, a, b);
    assertEquals(b, c.getB());
    assertSame(b, c.getB());
}

Example 27 with EllipticCurve

use of java.security.spec.EllipticCurve in project j2objc by google.

the class EllipticCurveTest method testGetSeed02.

/**
 * Test #2 for <code>getSeed()</code> method<br>
 * Assertion: returned array is copied to prevent subsequent modification<br>
 * Test preconditions: <code>ECFieldF2m</code> instance
 * created using valid parameters; <code>getSeed()</code>
 * called and then returned array modified<br>
 * Expected: internal state must not be affected by the modification
 */
public final void testGetSeed02() {
    ECFieldFp f = new ECFieldFp(BigInteger.valueOf(23L));
    BigInteger a = BigInteger.ONE;
    BigInteger b = BigInteger.valueOf(19L);
    byte[] seed = new byte[24];
    EllipticCurve c = new EllipticCurve(f, a, b, seed.clone());
    byte[] seedRet = c.getSeed();
    // modify returned array
    seedRet[0] = (byte) 1;
    // check that above modification did not changed
    // internal state of test object
    assertTrue(Arrays.equals(seed, c.getSeed()));
}

Example 28 with EllipticCurve

use of java.security.spec.EllipticCurve in project j2objc by google.

the class EllipticCurveTest method testEllipticCurveECFieldBigIntegerBigInteger01.

/**
 * Test #1 for <code>EllipticCurve(ECField, BigInteger, BigInteger)</code>
 * constructor<br>
 * Assertion: creates instance of EllipticCurve<br>
 * Test preconditions: valid parameters passed, field type is ECFieldFp<br>
 * Expected: must pass without any exceptions
 */
public final void testEllipticCurveECFieldBigIntegerBigInteger01() {
    // test case 1 parameters set
    ECFieldFp f = new ECFieldFp(BigInteger.valueOf(23L));
    BigInteger a = BigInteger.ONE;
    BigInteger b = BigInteger.valueOf(19L);
    // perform test case 1
    new EllipticCurve(f, a, b);
    // test case 2 parameters set
    ECFieldF2m f1 = new ECFieldF2m(5);
    a = BigInteger.ZERO;
    b = BigInteger.valueOf(23L);
    // perform test case 2
    new EllipticCurve(f1, a, b);
    // test case 3 parameters set,
    // the seed parameter may be null
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = BigInteger.ONE;
    b = BigInteger.valueOf(19L);
    // perform test case 3
    new EllipticCurve(f, a, b);
}

Example 29 with EllipticCurve

use of java.security.spec.EllipticCurve in project j2objc by google.

the class EllipticCurveTest method testEllipticCurveECFieldBigIntegerBigInteger05.

/**
 * java/security/spec/EllipticCurve#EllipticCurve(EcField,BigInteger,BigInteger)
 */
public final void testEllipticCurveECFieldBigIntegerBigInteger05() {
    // Regression for Harmony-731
    EllipticCurve ec = new EllipticCurve(new testECField(), BigInteger.valueOf(4L), BigInteger.ONE);
    assertEquals("incorrect a", ec.getA(), BigInteger.valueOf(4L));
    assertEquals("incorrect b", ec.getB(), BigInteger.ONE);
    assertEquals("incorrect size", ec.getField().getFieldSize(), 2);
}

Example 30 with EllipticCurve

use of java.security.spec.EllipticCurve in project j2objc by google.

the class EllipticCurveTest method testEllipticCurveECFieldBigIntegerBigIntegerbyteArray02.

/**
 * Test #2 for <code>EllipticCurve(ECField, BigInteger, BigInteger, byte[])</code>
 * constructor<br>
 * Assertion: throws <code>NullPointerException</code> if <code>field</code>,
 * <code>a</code> or <code>b</code> is <code>null</code><br>
 * Test preconditions: pass <code>null</code> as mentioned parameters<br>
 * Expected: must throw <code>NullPointerException</code>
 */
public final void testEllipticCurveECFieldBigIntegerBigIntegerbyteArray02() {
    // test case 1 parameters set
    ECFieldFp f = null;
    BigInteger a = BigInteger.ONE;
    BigInteger b = BigInteger.valueOf(19L);
    byte[] seed = new byte[24];
    // perform test case 1
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#1: Expected NPE not thrown");
    } catch (NullPointerException ok) {
    }
    // test case 2 parameters set,
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = null;
    b = BigInteger.valueOf(19L);
    seed = new byte[24];
    // perform test case 2
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#2: Expected NPE not thrown");
    } catch (NullPointerException ok) {
    }
    // test case 3 parameters set,
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = BigInteger.ONE;
    b = null;
    seed = new byte[24];
    // perform test case 2
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#3: Expected NPE not thrown");
    } catch (NullPointerException ok) {
    }
}