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

Example 86 with ECPoint

use of java.security.spec.ECPoint in project jruby-openssl by jruby.

the class PKeyEC method dh_compute_key.

@JRubyMethod(name = "dh_compute_key")
public IRubyObject dh_compute_key(final ThreadContext context, final IRubyObject point) {
    try {
        // "BC"
        KeyAgreement agreement = SecurityHelper.getKeyAgreement("ECDH");
        agreement.init(getPrivateKey());
        if (point.isNil()) {
            agreement.doPhase(getPublicKey(), true);
        } else {
            final ECPoint ecPoint = ((Point) point).asECPoint();
            final String name = getCurveName();
            // "BC"
            KeyFactory keyFactory = KeyFactory.getInstance("EC");
            ECParameterSpec spec = getParamSpec(name);
            ECPublicKey ecPublicKey = (ECPublicKey) keyFactory.generatePublic(new ECPublicKeySpec(ecPoint, spec));
            agreement.doPhase(ecPublicKey, true);
        }
        final byte[] secret = agreement.generateSecret();
        return StringHelper.newString(context.runtime, secret);
    } catch (NoSuchAlgorithmException ex) {
        throw newECError(context.runtime, ex.toString());
    } catch (InvalidKeyException ex) {
        throw newECError(context.runtime, ex.toString());
    } catch (GeneralSecurityException ex) {
        throw newECError(context.runtime, ex.toString());
    }
}

Example 87 with ECPoint

use of java.security.spec.ECPoint in project perun by CESNET.

the class urn_perun_user_attribute_def_def_sshPublicKey method getECPoint.

/**
 * Provides means to get from a parsed Q value to the X and Y point values.
 * that can be used to create and ECPoint compatible with ECPublicKeySpec.
 *
 * @param q          According to RFC 5656:
 *                   "Q is the public key encoded from an elliptic curve point into an octet string"
 * @param identifier According to RFC 5656:
 *                   "The string [identifier] is the identifier of the elliptic curve domain parameters."
 * @return An ECPoint suitable for creating a JCE ECPublicKeySpec.
 */
private ECPoint getECPoint(BigInteger q, String identifier) {
    String name = identifier.replace("nist", "sec") + "r1";
    ECNamedCurveParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec(name);
    org.bouncycastle.math.ec.ECPoint point = ecSpec.getCurve().decodePoint(q.toByteArray());
    BigInteger x = point.getAffineXCoord().toBigInteger();
    BigInteger y = point.getAffineYCoord().toBigInteger();
    return new ECPoint(x, y);
}

Example 88 with ECPoint

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

the class EcdhTest method testTimingSecp256r1.

@SlowTest(providers = { ProviderType.BOUNCY_CASTLE, ProviderType.SPONGY_CASTLE, ProviderType.OPENJDK })
@Test
public void testTimingSecp256r1() throws Exception {
    // edge case for projective coordinates
    BigInteger x1 = new BigInteger("81bfb55b010b1bdf08b8d9d8590087aa278e28febff3b05632eeff09011c5579", 16);
    BigInteger y1 = new BigInteger("732d0e65267ea28b7af8cfcb148936c2af8664cbb4f04e188148a1457400c2a7", 16);
    ECPoint p1 = new ECPoint(x1, y1);
    // random point
    BigInteger x2 = new BigInteger("8608e36a91f1fba12e4074972af446176b5608c9c58dc318bd0742754c3dcee7", 16);
    BigInteger y2 = new BigInteger("bc2c9ecd44af916ca58d9e3ef1257f698d350ef486eb86137fe69a7375bcc191", 16);
    ECPoint p2 = new ECPoint(x2, y2);
    testTiming(EcUtil.getNistP256Params(), p1, p2, new BigInteger("2"), 256, "secp256r1");
}

Example 89 with ECPoint

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

the class EcdhTest method testTimingSecp384r1.

@SlowTest(providers = { ProviderType.BOUNCY_CASTLE, ProviderType.SPONGY_CASTLE, ProviderType.OPENJDK })
@Test
public void testTimingSecp384r1() throws Exception {
    // edge case for projective coordinates
    BigInteger x1 = new BigInteger("7a6fadfee03eb09554f2a04fe08300aca88bb3a46e8f6347bace672cfe427698" + "8541cef8dc10536a84580215f5f90a3b", 16);
    BigInteger y1 = new BigInteger("6d243d5d9de1cdddd04cbeabdc7a0f6c244391f7cb2d5738fe13c334add4b458" + "5fef61ffd446db33b39402278713ae78", 16);
    ECPoint p1 = new ECPoint(x1, y1);
    // random point
    BigInteger x2 = new BigInteger("71f3c57d6a879889e582af2c7c5444b0eb6ba95d88365b21ca9549475273ecdd" + "3930aa0bebbd1cf084e4049667278602", 16);
    BigInteger y2 = new BigInteger("9dcbc4d843af8944eb4ba018d369b351a9ea0f7b9e3561df2ee218d54e198f7c" + "837a3abaa41dffd2d2cb771a7599ed9e", 16);
    ECPoint p2 = new ECPoint(x2, y2);
    testTiming(EcUtil.getNistP384Params(), p1, p2, new BigInteger("2"), 384, "secp384r1");
}

Example 90 with ECPoint

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

the class EcdhTest method testTimingBrainpoolP256r1.

@SlowTest(providers = { ProviderType.BOUNCY_CASTLE, ProviderType.SPONGY_CASTLE, ProviderType.OPENJDK })
@Test
public void testTimingBrainpoolP256r1() throws Exception {
    // edge case for Jacobian and projective coordinates
    BigInteger x1 = new BigInteger("79838c22d2b8dc9af2e6cf56f8826dc3dfe10fcb17b6aaaf551ee52bef12f826", 16);
    BigInteger y1 = new BigInteger("1e2ed3d453088c8552c6feecf898667bc1e15905002edec6b269feb7bea09d5b", 16);
    ECPoint p1 = new ECPoint(x1, y1);
    // random point
    BigInteger x2 = new BigInteger("2720b2e821b2ac8209b573bca755a68821e1e09deb580666702570dd527dd4c1", 16);
    BigInteger y2 = new BigInteger("25cdd610243c7e693fad7bd69b43ae3e63e94317c4c6b717d9c8bc3be8c996fb", 16);
    ECPoint p2 = new ECPoint(x2, y2);
    testTiming(EcUtil.getBrainpoolP256r1Params(), p1, p2, new BigInteger("2"), 255, "brainpoolP256r1");
}