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

Example 66 with EllipticCurve

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

the class EcUtil method getBrainpoolP256r1Params.

public static ECParameterSpec getBrainpoolP256r1Params() {
    BigInteger p = new BigInteger("A9FB57DBA1EEA9BC3E660A909D838D726E3BF623D52620282013481D1F6E5377", 16);
    BigInteger a = new BigInteger("7D5A0975FC2C3057EEF67530417AFFE7FB8055C126DC5C6CE94A4B44F330B5D9", 16);
    BigInteger b = new BigInteger("26DC5C6CE94A4B44F330B5D9BBD77CBF958416295CF7E1CE6BCCDC18FF8C07B6", 16);
    BigInteger x = new BigInteger("8BD2AEB9CB7E57CB2C4B482FFC81B7AFB9DE27E1E3BD23C23A4453BD9ACE3262", 16);
    BigInteger y = new BigInteger("547EF835C3DAC4FD97F8461A14611DC9C27745132DED8E545C1D54C72F046997", 16);
    BigInteger n = new BigInteger("A9FB57DBA1EEA9BC3E660A909D838D718C397AA3B561A6F7901E0E82974856A7", 16);
    final int h = 1;
    ECFieldFp fp = new ECFieldFp(p);
    EllipticCurve curve = new EllipticCurve(fp, a, b);
    ECPoint g = new ECPoint(x, y);
    return new ECParameterSpec(curve, g, n, h);
}

Example 67 with EllipticCurve

use of java.security.spec.EllipticCurve in project dhis2-core by dhis2.

the class TestKeys method generateEcKeyPair.

static KeyPair generateEcKeyPair() {
    EllipticCurve ellipticCurve = new EllipticCurve(new ECFieldFp(new BigInteger("115792089210356248762697446949407573530086143415290314195533631308867097853951")), new BigInteger("115792089210356248762697446949407573530086143415290314195533631308867097853948"), new BigInteger("41058363725152142129326129780047268409114441015993725554835256314039467401291"));
    ECPoint ecPoint = new ECPoint(new BigInteger("48439561293906451759052585252797914202762949526041747995844080717082404635286"), new BigInteger("36134250956749795798585127919587881956611106672985015071877198253568414405109"));
    ECParameterSpec ecParameterSpec = new ECParameterSpec(ellipticCurve, ecPoint, new BigInteger("115792089210356248762697446949407573529996955224135760342422259061068512044369"), 1);
    KeyPair keyPair;
    try {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC");
        keyPairGenerator.initialize(ecParameterSpec);
        keyPair = keyPairGenerator.generateKeyPair();
    } catch (Exception ex) {
        throw new IllegalStateException(ex);
    }
    return keyPair;
}

Example 68 with EllipticCurve

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

the class EllipticCurveTest method testEllipticCurveECFieldBigIntegerBigIntegerbyteArray03.

/**
 * Test #3 for <code>EllipticCurve(ECField, BigInteger, BigInteger, byte[])</code>
 * constructor<br>
 * Assertion: throws <code>IllegalArgumentException</code> if
 * <code>a</code> or <code>b</code> is not <code>null</code> and not in
 * the <code>field</code><br>
 * Test preconditions: pass <code>a</code>, <code>b</code> which are
 * not in the <code>field</code> of type <code>ECFieldFp</code><br>
 * Expected: must throw <code>IllegalArgumentException</code>
 */
public final void testEllipticCurveECFieldBigIntegerBigIntegerbyteArray03() {
    // test case 1 parameters set,
    // a is not in field
    ECFieldFp f = new ECFieldFp(BigInteger.valueOf(23L));
    BigInteger a = BigInteger.valueOf(24L);
    BigInteger b = BigInteger.valueOf(19L);
    byte[] seed = new byte[24];
    // perform test case 1
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#1: Expected IAE not thrown");
    } catch (IllegalArgumentException ok) {
    }
    // test case 1.1 parameters set,
    // b is not in field
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = BigInteger.valueOf(1L);
    b = BigInteger.valueOf(23L);
    seed = new byte[24];
    // perform test case 1.1
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#1.1: Expected IAE not thrown");
    } catch (IllegalArgumentException ok) {
    }
    // test case 2 parameters set,
    // b is not in field
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = BigInteger.valueOf(19L);
    b = BigInteger.valueOf(24L);
    seed = new byte[24];
    // perform test case 2
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#2: Expected IAE not thrown");
    } catch (IllegalArgumentException ok) {
    }
    // test case 3 parameters set,
    // both a and b are not in field
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = BigInteger.valueOf(25L);
    b = BigInteger.valueOf(240L);
    seed = new byte[24];
    // perform test case 3
    try {
        new EllipticCurve(f, a, b, seed);
        fail("#3: Expected IAE not thrown");
    } catch (IllegalArgumentException ok) {
    }
}

Example 69 with EllipticCurve

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

the class EllipticCurveTest method testEllipticCurveECFieldBigIntegerBigIntegerbyteArray01.

/**
 * Test #1 for <code>EllipticCurve(ECField, BigInteger, BigInteger, byte[])</code>
 * constructor<br>
 * Assertion: creates instance of EllipticCurve<br>
 * Test preconditions: valid parameters passed<br>
 * Expected: must pass without any exceptions
 */
public final void testEllipticCurveECFieldBigIntegerBigIntegerbyteArray01() {
    // test case 1 parameters set
    ECFieldFp f = new ECFieldFp(BigInteger.valueOf(23L));
    BigInteger a = BigInteger.ONE;
    BigInteger b = BigInteger.valueOf(19L);
    byte[] seed = new byte[24];
    // perform test case 1
    new EllipticCurve(f, a, b, seed);
    // 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, seed);
    // test case 3 parameters set,
    // the seed parameter may be null
    f = new ECFieldFp(BigInteger.valueOf(23L));
    a = BigInteger.ONE;
    b = BigInteger.valueOf(19L);
    seed = null;
    // perform test case 3
    new EllipticCurve(f, a, b, seed);
}

Example 70 with EllipticCurve

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

the class EllipticCurveTest method testGetSeed01.

/**
 * Test #1 for <code>getSeed()</code> method<br>
 * Assertion: returns <code>seed</code><br>
 * Test preconditions: <code>ECFieldF2m</code> instance
 * created using valid parameters<br>
 * Expected: must return <code>seed</code> which is equal
 * to the one passed to the constructor
 */
public final void testGetSeed01() {
    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);
    byte[] seedRet = c.getSeed();
    assertNotNull(seedRet);
    assertTrue(Arrays.equals(seed, seedRet));
}