Examples with EcdsaPublicKey com.google.crypto.tink.proto.EcdsaPublicKey used on opensource projects

Example 1 with EcdsaPublicKey

use of com.google.crypto.tink.proto.EcdsaPublicKey in project tink by google.

the class EcdsaSignKeyManager method newKey.

/**
 * @param keyFormat {@code EcdsaKeyFormat} proto
 * @return new {@code EcdsaPrivateKey} proto
 */
@Override
public MessageLite newKey(MessageLite keyFormat) throws GeneralSecurityException {
    if (!(keyFormat instanceof EcdsaKeyFormat)) {
        throw new GeneralSecurityException("expected EcdsaKeyFormat proto");
    }
    EcdsaKeyFormat format = (EcdsaKeyFormat) keyFormat;
    EcdsaParams ecdsaParams = format.getParams();
    SigUtil.validateEcdsaParams(ecdsaParams);
    KeyPair keyPair = EllipticCurves.generateKeyPair(SigUtil.toCurveType(ecdsaParams.getCurve()));
    ECPublicKey pubKey = (ECPublicKey) keyPair.getPublic();
    ECPrivateKey privKey = (ECPrivateKey) keyPair.getPrivate();
    ECPoint w = pubKey.getW();
    // Creates EcdsaPublicKey.
    EcdsaPublicKey ecdsaPubKey = EcdsaPublicKey.newBuilder().setVersion(VERSION).setParams(ecdsaParams).setX(ByteString.copyFrom(w.getAffineX().toByteArray())).setY(ByteString.copyFrom(w.getAffineY().toByteArray())).build();
    // Creates EcdsaPrivateKey.
    return EcdsaPrivateKey.newBuilder().setVersion(VERSION).setPublicKey(ecdsaPubKey).setKeyValue(ByteString.copyFrom(privKey.getS().toByteArray())).build();
}

Example 2 with EcdsaPublicKey

use of com.google.crypto.tink.proto.EcdsaPublicKey in project tink by google.

the class TestUtil method generateEcdsaPrivKey.

/**
 * @return a {@code EcdsaPrivateKey} constructed from {@code EllipticCurveType} and {@code
 *     HashType}.
 */
public static EcdsaPrivateKey generateEcdsaPrivKey(EllipticCurveType curve, HashType hashType, EcdsaSignatureEncoding encoding) throws Exception {
    ECParameterSpec ecParams;
    switch(curve) {
        case NIST_P256:
            ecParams = EllipticCurves.getNistP256Params();
            break;
        case NIST_P384:
            ecParams = EllipticCurves.getNistP384Params();
            break;
        case NIST_P521:
            ecParams = EllipticCurves.getNistP521Params();
            break;
        default:
            throw new NoSuchAlgorithmException("Curve not implemented:" + curve);
    }
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
    keyGen.initialize(ecParams);
    KeyPair keyPair = keyGen.generateKeyPair();
    ECPublicKey pubKey = (ECPublicKey) keyPair.getPublic();
    ECPrivateKey privKey = (ECPrivateKey) keyPair.getPrivate();
    ECPoint w = pubKey.getW();
    EcdsaPublicKey ecdsaPubKey = createEcdsaPubKey(hashType, curve, encoding, w.getAffineX().toByteArray(), w.getAffineY().toByteArray());
    return createEcdsaPrivKey(ecdsaPubKey, privKey.getS().toByteArray());
}

Example 3 with EcdsaPublicKey

use of com.google.crypto.tink.proto.EcdsaPublicKey in project tink by google.

the class EcdsaVerifyKeyManagerTest method createVerifier.

private PublicKeyVerify createVerifier(HashType hashType, EllipticCurveType curve, EcdsaSignatureEncoding encoding, byte[] pubX, byte[] pubY) throws Exception {
    EcdsaPublicKey ecdsaPubKey = TestUtil.createEcdsaPubKey(hashType, curve, encoding, pubX, pubY);
    EcdsaVerifyKeyManager verifyManager = new EcdsaVerifyKeyManager();
    return verifyManager.getPrimitive(ecdsaPubKey);
}

Example 4 with EcdsaPublicKey

use of com.google.crypto.tink.proto.EcdsaPublicKey in project tink by google.

the class EcdsaSignKeyManagerTest method testGetPrimitiveWithUnsupportedKey.

private void testGetPrimitiveWithUnsupportedKey(HashAndCurveType hashAndCurve) throws Exception {
    HashType hashType = hashAndCurve.hashType;
    EllipticCurveType curveType = hashAndCurve.curveType;
    KeyPair keyPair = EllipticCurves.generateKeyPair(SigUtil.toCurveType(curveType));
    ECPublicKey pubKey = (ECPublicKey) keyPair.getPublic();
    ECPrivateKey privKey = (ECPrivateKey) keyPair.getPrivate();
    ECPoint w = pubKey.getW();
    EcdsaPublicKey ecdsaPubKey = TestUtil.createEcdsaPubKey(hashType, curveType, EcdsaSignatureEncoding.DER, w.getAffineX().toByteArray(), w.getAffineY().toByteArray());
    EcdsaPrivateKey ecdsaPrivKey = TestUtil.createEcdsaPrivKey(ecdsaPubKey, privKey.getS().toByteArray());
    EcdsaSignKeyManager signManager = new EcdsaSignKeyManager();
    try {
        PublicKeySign unusedSigner = signManager.getPrimitive(ecdsaPrivKey);
        fail("Unsupported key, should have thrown exception: " + hashType + " " + curveType);
    } catch (GeneralSecurityException expected) {
    // Expected
    }
}

Example 5 with EcdsaPublicKey

use of com.google.crypto.tink.proto.EcdsaPublicKey in project tink by google.

the class EcdsaProtoTest method testKeysetBasic.

@Test
public void testKeysetBasic() throws Exception {
    EcdsaPublicKey publicKey = EcdsaPublicKey.newBuilder().setVersion(1).build();
    assertEquals(1, publicKey.getVersion());
}