Examples with PublicKeySign com.google.crypto.tink.PublicKeySign used on opensource projects

Example 26 with PublicKeySign

use of com.google.crypto.tink.PublicKeySign in project tink by google.

the class PublicKeySignWrapperTest method testMultipleKeys.

@Test
public void testMultipleKeys() throws Exception {
    EcdsaPrivateKey tinkPrivateKey = TestUtil.generateEcdsaPrivKey(EllipticCurveType.NIST_P521, HashType.SHA512, EcdsaSignatureEncoding.DER);
    Key tink = TestUtil.createKey(TestUtil.createKeyData(tinkPrivateKey, new EcdsaSignKeyManager().getKeyType(), KeyData.KeyMaterialType.ASYMMETRIC_PRIVATE), 1, KeyStatusType.ENABLED, OutputPrefixType.TINK);
    EcdsaPrivateKey legacyPrivateKey = TestUtil.generateEcdsaPrivKey(EllipticCurveType.NIST_P256, HashType.SHA256, EcdsaSignatureEncoding.DER);
    Key legacy = TestUtil.createKey(TestUtil.createKeyData(legacyPrivateKey, new EcdsaSignKeyManager().getKeyType(), KeyData.KeyMaterialType.ASYMMETRIC_PRIVATE), 2, KeyStatusType.ENABLED, OutputPrefixType.LEGACY);
    EcdsaPrivateKey rawPrivateKey = TestUtil.generateEcdsaPrivKey(EllipticCurveType.NIST_P384, HashType.SHA512, EcdsaSignatureEncoding.DER);
    Key raw = TestUtil.createKey(TestUtil.createKeyData(rawPrivateKey, new EcdsaSignKeyManager().getKeyType(), KeyData.KeyMaterialType.ASYMMETRIC_PRIVATE), 3, KeyStatusType.ENABLED, OutputPrefixType.RAW);
    EcdsaPrivateKey crunchyPrivateKey = TestUtil.generateEcdsaPrivKey(EllipticCurveType.NIST_P384, HashType.SHA512, EcdsaSignatureEncoding.DER);
    Key crunchy = TestUtil.createKey(TestUtil.createKeyData(crunchyPrivateKey, new EcdsaSignKeyManager().getKeyType(), KeyData.KeyMaterialType.ASYMMETRIC_PRIVATE), 4, KeyStatusType.ENABLED, OutputPrefixType.CRUNCHY);
    Key[] keys = new Key[] { tink, legacy, raw, crunchy };
    EcdsaPrivateKey[] privateKeys = new EcdsaPrivateKey[] { tinkPrivateKey, legacyPrivateKey, rawPrivateKey, crunchyPrivateKey };
    int j = keys.length;
    for (int i = 0; i < j; i++) {
        PrimitiveSet<PublicKeySign> primitives = TestUtil.createPrimitiveSet(TestUtil.createKeyset(keys[i], keys[(i + 1) % j], keys[(i + 2) % j], keys[(i + 3) % j]), PublicKeySign.class);
        // Signs with the primary private key.
        PublicKeySign signer = new PublicKeySignWrapper().wrap(primitives);
        byte[] plaintext = Random.randBytes(1211);
        byte[] sig = signer.sign(plaintext);
        if (keys[i].getOutputPrefixType() != OutputPrefixType.RAW) {
            byte[] prefix = Arrays.copyOfRange(sig, 0, CryptoFormat.NON_RAW_PREFIX_SIZE);
            assertArrayEquals(prefix, CryptoFormat.getOutputPrefix(keys[i]));
        }
        // Verifying with the primary public key should work.
        PublicKeyVerify verifier = PublicKeyVerifyFactory.getPrimitive(TestUtil.createKeysetHandle(TestUtil.createKeyset(TestUtil.createKey(TestUtil.createKeyData(privateKeys[i].getPublicKey(), new EcdsaVerifyKeyManager().getKeyType(), KeyData.KeyMaterialType.ASYMMETRIC_PUBLIC), keys[i].getKeyId(), KeyStatusType.ENABLED, keys[i].getOutputPrefixType()))));
        try {
            verifier.verify(sig, plaintext);
        } catch (GeneralSecurityException ex) {
            fail("Valid signature, should not throw exception");
        }
        // Verifying with a random public key should fail.
        EcdsaPrivateKey randomPrivKey = TestUtil.generateEcdsaPrivKey(EllipticCurveType.NIST_P521, HashType.SHA512, EcdsaSignatureEncoding.DER);
        final PublicKeyVerify verifier2 = PublicKeyVerifyFactory.getPrimitive(TestUtil.createKeysetHandle(TestUtil.createKeyset(TestUtil.createKey(TestUtil.createKeyData(randomPrivKey.getPublicKey(), new EcdsaVerifyKeyManager().getKeyType(), KeyData.KeyMaterialType.ASYMMETRIC_PUBLIC), keys[i].getKeyId(), KeyStatusType.ENABLED, keys[i].getOutputPrefixType()))));
        assertThrows(GeneralSecurityException.class, () -> verifier2.verify(sig, plaintext));
    }
}

Example 27 with PublicKeySign

use of com.google.crypto.tink.PublicKeySign in project tink by google.

the class RsaSsaPkcs1SignKeyManagerTest method createPrimitive.

@Test
public void createPrimitive() throws Exception {
    if (TestUtil.isTsan()) {
        // factory.createKey is too slow in Tsan.
        return;
    }
    RsaSsaPkcs1KeyFormat format = createKeyFormat(HashType.SHA256, 3072, RSAKeyGenParameterSpec.F4);
    RsaSsaPkcs1PrivateKey key = factory.createKey(format);
    PublicKeySign signer = manager.getPrimitive(key, PublicKeySign.class);
    KeyFactory kf = EngineFactory.KEY_FACTORY.getInstance("RSA");
    BigInteger modulus = new BigInteger(1, key.getPublicKey().getN().toByteArray());
    BigInteger exponent = new BigInteger(1, key.getPublicKey().getE().toByteArray());
    RSAPublicKey publicKey = (RSAPublicKey) kf.generatePublic(new RSAPublicKeySpec(modulus, exponent));
    PublicKeyVerify verifier = new RsaSsaPkcs1VerifyJce(publicKey, SigUtil.toHashType(key.getPublicKey().getParams().getHashType()));
    byte[] message = Random.randBytes(135);
    verifier.verify(signer.sign(message), message);
}

Example 28 with PublicKeySign

use of com.google.crypto.tink.PublicKeySign in project tink by google.

the class CreatePublicKeysetCommandTest method assertSignature.

private void assertSignature(KeysetReader privateReader, KeysetReader publicReader) throws Exception {
    byte[] message = Random.randBytes(10);
    KeysetHandle privateHandle = CleartextKeysetHandle.read(privateReader);
    PublicKeySign signer = privateHandle.getPrimitive(PublicKeySign.class);
    KeysetHandle publicHandle = CleartextKeysetHandle.read(publicReader);
    PublicKeyVerify verifier = publicHandle.getPrimitive(PublicKeyVerify.class);
    verifier.verify(signer.sign(message), message);
}