Examples with RSAEngine org.bouncycastle.crypto.engines.RSAEngine used on opensource projects

Example 1 with RSAEngine

use of org.bouncycastle.crypto.engines.RSAEngine in project faf-java-server by FAForever.

the class UniqueIdServiceTest method rsaEncrypt.

private static byte[] rsaEncrypt(byte[] encryptedData, CipherParameters privateKey) throws IOException, InvalidCipherTextException {
    AsymmetricBlockCipher engine = new PKCS1Encoding(new RSAEngine());
    engine.init(true, privateKey);
    return engine.processBlock(encryptedData, 0, encryptedData.length);
}

Example 2 with RSAEngine

use of org.bouncycastle.crypto.engines.RSAEngine in project cloudbreak by hortonworks.

the class PkiUtil method generateSignature.

public static String generateSignature(String privateKeyPem, byte[] data) {
    RSAKeyParameters rsaKeyParameters = CACHE.get(privateKeyPem);
    if (rsaKeyParameters == null) {
        try (PEMParser pEMParser = new PEMParser(new StringReader(clarifyPemKey(privateKeyPem)))) {
            PEMKeyPair pemKeyPair = (PEMKeyPair) pEMParser.readObject();
            KeyFactory factory = KeyFactory.getInstance("RSA");
            KeySpec publicKeySpec = new X509EncodedKeySpec(pemKeyPair.getPublicKeyInfo().getEncoded());
            PublicKey publicKey = factory.generatePublic(publicKeySpec);
            KeySpec privateKeySpec = new PKCS8EncodedKeySpec(pemKeyPair.getPrivateKeyInfo().getEncoded());
            PrivateKey privateKey = factory.generatePrivate(privateKeySpec);
            KeyPair kp = new KeyPair(publicKey, privateKey);
            RSAPrivateKeySpec privKeySpec = factory.getKeySpec(kp.getPrivate(), RSAPrivateKeySpec.class);
            rsaKeyParameters = new RSAKeyParameters(true, privKeySpec.getModulus(), privKeySpec.getPrivateExponent());
            CACHE.put(privateKeyPem, rsaKeyParameters);
        } catch (NoSuchAlgorithmException | IOException | InvalidKeySpecException e) {
            throw new SecurityException(e);
        }
    }
    Signer signer = new PSSSigner(new RSAEngine(), new SHA256Digest(), SALT_LENGTH);
    signer.init(true, rsaKeyParameters);
    signer.update(data, 0, data.length);
    try {
        byte[] signature = signer.generateSignature();
        return BaseEncoding.base64().encode(signature);
    } catch (CryptoException e) {
        throw new SecurityException(e);
    }
}

Example 3 with RSAEngine

use of org.bouncycastle.crypto.engines.RSAEngine in project 360-Engine-for-Android by 360.

the class RSAEncryptionUtils method rsa.

/**
 * Encrypts or Decrypts bytes with the given RSA Public or Private Key.
 *
 * @param encrypt true for encrypt, false for decrypt.
 * @param key the RSA Public or Private Key.
 * @param data the data to encrypt or decrypt.
 * @return the encrypted or decrypted data.
 */
private static byte[] rsa(final boolean encrypt, final RSAKeyParameters key, final byte[] data) throws InvalidCipherTextException {
    final byte[] dataAligned = new byte[roundUp(data.length, ROUND_UP_VALUE)];
    System.arraycopy(data, 0, dataAligned, 0, data.length);
    final RSAEngine rsa = new RSAEngine();
    final AsymmetricBlockCipher pkcs1 = new PKCS1Encoding(rsa);
    pkcs1.init(encrypt, key);
    if (encrypt)
        return pkcs1.processBlock(dataAligned, 0, dataAligned.length);
    return trimZeros(pkcs1.processBlock(dataAligned, 0, dataAligned.length));
}