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

Example 71 with ECPoint

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

the class ECPointTest method testGetAffineY01.

/**
 * Test #1 for <code>getAffineY()</code> method<br>
 * Assertion: returns affine <code>y</code> coordinate<br>
 * Test preconditions: <code>ECPoint</code> instance
 * created using valid parameters<br>
 * Expected: must return affine <code>y</code> coordinate
 * which is equal to the one passed to the constructor;
 * (both must refer the same object)
 */
public final void testGetAffineY01() {
    BigInteger y = BigInteger.valueOf(23456L);
    ECPoint p = new ECPoint(BigInteger.valueOf(-23456L), y);
    BigInteger yRet = p.getAffineY();
    assertEquals(y, yRet);
    assertSame(y, yRet);
}

Example 72 with ECPoint

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

the class ECPointTest method testGetAffineX01.

/**
 * Test #1 for <code>getAffineX()</code> method<br>
 * Assertion: returns affine <code>x</code> coordinate<br>
 * Test preconditions: <code>ECPoint</code> instance
 * created using valid parameters<br>
 * Expected: must return affine <code>x</code> coordinate
 * which is equal to the one passed to the constructor;
 * (both must refer the same object)
 */
public final void testGetAffineX01() {
    BigInteger x = BigInteger.valueOf(-23456L);
    ECPoint p = new ECPoint(x, BigInteger.valueOf(23456L));
    BigInteger xRet = p.getAffineX();
    assertEquals(x, xRet);
    assertSame(x, xRet);
}

Example 73 with ECPoint

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

the class ECPublicKeySpecTest method setUp.

protected void setUp() throws Exception {
    super.setUp();
    ECPoint ecpoint = new ECPoint(BigInteger.valueOf(1), BigInteger.valueOf(1));
    EllipticCurve curve = new EllipticCurve(new ECFieldF2m(2), BigInteger.valueOf(1), BigInteger.valueOf(1));
    w = new ECPoint(BigInteger.valueOf(1), BigInteger.valueOf(1));
    params = new ECParameterSpec(curve, ecpoint, BigInteger.valueOf(1), 1);
    ecpks = new ECPublicKeySpec(w, params);
}

Example 74 with ECPoint

use of java.security.spec.ECPoint in project cxf by apache.

the class CryptoUtils method getECPublicKey.

public static ECPublicKey getECPublicKey(String curve, byte[] xPoint, byte[] yPoint) {
    try {
        ECParameterSpec params = getECParameterSpec(curve, false);
        ECPoint ecPoint = new ECPoint(toBigInteger(xPoint), toBigInteger(yPoint));
        ECPublicKeySpec keySpec = new ECPublicKeySpec(ecPoint, params);
        KeyFactory kf = KeyFactory.getInstance("EC");
        return (ECPublicKey) kf.generatePublic(keySpec);
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}

Example 75 with ECPoint

use of java.security.spec.ECPoint in project hutool by looly.

the class BCUtil method decodeECPoint.

/**
 * 解码恢复EC压缩公钥,支持Base64和Hex编码,（基于BouncyCastle）
 *
 * @param encodeByte 压缩公钥
 * @param curveName  EC曲线名，例如{@link SmUtil#SM2_DOMAIN_PARAMS}
 * @return 公钥
 * @since 4.4.4
 */
public static PublicKey decodeECPoint(byte[] encodeByte, String curveName) {
    final X9ECParameters x9ECParameters = ECUtil.getNamedCurveByName(curveName);
    final ECCurve curve = x9ECParameters.getCurve();
    final ECPoint point = EC5Util.convertPoint(curve.decodePoint(encodeByte));
    // 根据曲线恢复公钥格式
    final ECNamedCurveSpec ecSpec = new ECNamedCurveSpec(curveName, curve, x9ECParameters.getG(), x9ECParameters.getN());
    return KeyUtil.generatePublicKey("EC", new ECPublicKeySpec(point, ecSpec));
}