Examples with RsaSsaPkcs1VerifyJce com.google.crypto.tink.subtle.RsaSsaPkcs1VerifyJce used on opensource projects

Example 1 with RsaSsaPkcs1VerifyJce

use of com.google.crypto.tink.subtle.RsaSsaPkcs1VerifyJce 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);
}