Examples with GCMBlockCipher org.bouncycastle.crypto.modes.GCMBlockCipher used on opensource projects

Example 16 with GCMBlockCipher

use of org.bouncycastle.crypto.modes.GCMBlockCipher in project oxAuth by GluuFederation.

the class JweEncrypterImpl method generateCipherTextAndIntegrityValue.

@Override
public Pair<String, String> generateCipherTextAndIntegrityValue(byte[] contentMasterKey, byte[] initializationVector, byte[] additionalAuthenticatedData, byte[] plainText) throws InvalidJweException {
    if (getBlockEncryptionAlgorithm() == null) {
        throw new InvalidJweException("The block encryption algorithm is null");
    }
    if (contentMasterKey == null) {
        throw new InvalidJweException("The content master key (CMK) is null");
    }
    if (initializationVector == null) {
        throw new InvalidJweException("The initialization vector is null");
    }
    if (additionalAuthenticatedData == null) {
        throw new InvalidJweException("The additional authentication data is null");
    }
    if (plainText == null) {
        throw new InvalidJweException("The plain text to encrypt is null");
    }
    try {
        if (getBlockEncryptionAlgorithm() == BlockEncryptionAlgorithm.A128GCM || getBlockEncryptionAlgorithm() == BlockEncryptionAlgorithm.A256GCM) {
            SecretKey secretKey = new SecretKeySpec(contentMasterKey, "AES");
            KeyParameter key = new KeyParameter(contentMasterKey);
            final int MAC_SIZE_BITS = 128;
            AEADParameters aeadParameters = new AEADParameters(key, MAC_SIZE_BITS, initializationVector, additionalAuthenticatedData);
            final int macSize = aeadParameters.getMacSize() / 8;
            BlockCipher blockCipher = new AESEngine();
            CipherParameters params = new KeyParameter(secretKey.getEncoded());
            blockCipher.init(true, params);
            GCMBlockCipher aGCMBlockCipher = new GCMBlockCipher(blockCipher);
            aGCMBlockCipher.init(true, aeadParameters);
            int len = aGCMBlockCipher.getOutputSize(plainText.length);
            byte[] out = new byte[len];
            int outOff = aGCMBlockCipher.processBytes(plainText, 0, plainText.length, out, 0);
            outOff += aGCMBlockCipher.doFinal(out, outOff);
            byte[] cipherText = new byte[outOff - macSize];
            System.arraycopy(out, 0, cipherText, 0, cipherText.length);
            byte[] authenticationTag = new byte[macSize];
            System.arraycopy(out, outOff - macSize, authenticationTag, 0, authenticationTag.length);
            String encodedCipherText = Base64Util.base64urlencode(cipherText);
            String encodedAuthenticationTag = Base64Util.base64urlencode(authenticationTag);
            return new Pair<String, String>(encodedCipherText, encodedAuthenticationTag);
        } else if (getBlockEncryptionAlgorithm() == BlockEncryptionAlgorithm.A128CBC_PLUS_HS256 || getBlockEncryptionAlgorithm() == BlockEncryptionAlgorithm.A256CBC_PLUS_HS512) {
            byte[] cek = KeyDerivationFunction.generateCek(contentMasterKey, getBlockEncryptionAlgorithm());
            IvParameterSpec parameters = new IvParameterSpec(initializationVector);
            Cipher cipher = Cipher.getInstance(getBlockEncryptionAlgorithm().getAlgorithm(), "BC");
            //Cipher cipher = Cipher.getInstance(getBlockEncryptionAlgorithm().getAlgorithm());
            SecretKeySpec secretKeySpec = new SecretKeySpec(cek, "AES");
            cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, parameters);
            byte[] cipherText = cipher.doFinal(plainText);
            String encodedCipherText = Base64Util.base64urlencode(cipherText);
            String securedInputValue = new String(additionalAuthenticatedData, Charset.forName(Util.UTF8_STRING_ENCODING)) + "." + encodedCipherText;
            byte[] cik = KeyDerivationFunction.generateCik(contentMasterKey, getBlockEncryptionAlgorithm());
            SecretKey secretKey = new SecretKeySpec(cik, getBlockEncryptionAlgorithm().getIntegrityValueAlgorithm());
            Mac mac = Mac.getInstance(getBlockEncryptionAlgorithm().getIntegrityValueAlgorithm());
            mac.init(secretKey);
            byte[] integrityValue = mac.doFinal(securedInputValue.getBytes(Util.UTF8_STRING_ENCODING));
            String encodedIntegrityValue = Base64Util.base64urlencode(integrityValue);
            return new Pair<String, String>(encodedCipherText, encodedIntegrityValue);
        } else {
            throw new InvalidJweException("The block encryption algorithm is not supported");
        }
    } catch (InvalidCipherTextException e) {
        throw new InvalidJweException(e);
    } catch (NoSuchAlgorithmException e) {
        throw new InvalidJweException(e);
    } catch (UnsupportedEncodingException e) {
        throw new InvalidJweException(e);
    } catch (NoSuchProviderException e) {
        throw new InvalidJweException(e);
    } catch (IllegalBlockSizeException e) {
        throw new InvalidJweException(e);
    } catch (InvalidKeyException e) {
        throw new InvalidJweException(e);
    } catch (BadPaddingException e) {
        throw new InvalidJweException(e);
    } catch (InvalidAlgorithmParameterException e) {
        throw new InvalidJweException(e);
    } catch (NoSuchPaddingException e) {
        throw new InvalidJweException(e);
    } catch (InvalidParameterException e) {
        throw new InvalidJweException(e);
    }
}

Example 17 with GCMBlockCipher

use of org.bouncycastle.crypto.modes.GCMBlockCipher in project xipki by xipki.

the class EmulatorP11Identity method aesGmac.

// TODO: check the correctness
private byte[] aesGmac(P11Params params, byte[] contentToSign) throws P11TokenException {
    if (params == null) {
        throw new P11TokenException("iv must not be null");
    }
    byte[] iv;
    if (params instanceof P11IVParams) {
        iv = ((P11IVParams) params).getIV();
    } else {
        throw new P11TokenException("params must be instanceof P11IVParams");
    }
    GMac gmac = new GMac(new GCMBlockCipher(new AESEngine()));
    ParametersWithIV paramsWithIv = new ParametersWithIV(new KeyParameter(signingKey.getEncoded()), iv);
    gmac.init(paramsWithIv);
    gmac.update(contentToSign, 0, contentToSign.length);
    byte[] signature = new byte[gmac.getMacSize()];
    gmac.doFinal(signature, 0);
    return signature;
}

Example 18 with GCMBlockCipher

use of org.bouncycastle.crypto.modes.GCMBlockCipher in project Zom-Android by zom.

the class Downloader method setupInputStream.

public static InputStream setupInputStream(InputStream is, byte[] keyAndIv) {
    if (keyAndIv != null && keyAndIv.length == 48) {
        byte[] key = new byte[32];
        byte[] iv = new byte[16];
        System.arraycopy(keyAndIv, 0, iv, 0, 16);
        System.arraycopy(keyAndIv, 16, key, 0, 32);
        AEADBlockCipher cipher = new GCMBlockCipher(new AESEngine());
        cipher.init(true, new AEADParameters(new KeyParameter(key), 128, iv));
        return new CipherInputStream(is, cipher);
    } else {
        return is;
    }
}

Example 19 with GCMBlockCipher

use of org.bouncycastle.crypto.modes.GCMBlockCipher in project elastic-core-maven by OrdinaryDude.

the class Crypto method aesGCMDecrypt.

public static byte[] aesGCMDecrypt(byte[] ivCiphertext, byte[] key) {
    try {
        if (ivCiphertext.length < 16) {
            throw new InvalidCipherTextException("invalid ivCiphertext length");
        }
        byte[] iv = Arrays.copyOfRange(ivCiphertext, 0, 16);
        byte[] ciphertext = Arrays.copyOfRange(ivCiphertext, 16, ivCiphertext.length);
        GCMBlockCipher aes = new GCMBlockCipher(new AESEngine());
        CipherParameters ivAndKey = new ParametersWithIV(new KeyParameter(key), iv);
        aes.init(false, ivAndKey);
        byte[] output = new byte[aes.getOutputSize(ciphertext.length)];
        int plaintextLength = aes.processBytes(ciphertext, 0, ciphertext.length, output, 0);
        plaintextLength += aes.doFinal(output, plaintextLength);
        byte[] result = new byte[plaintextLength];
        System.arraycopy(output, 0, result, 0, result.length);
        return result;
    } catch (InvalidCipherTextException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}

Example 20 with GCMBlockCipher

use of org.bouncycastle.crypto.modes.GCMBlockCipher in project elastic-core-maven by OrdinaryDude.

the class Crypto method aesGCMEncrypt.

public static byte[] aesGCMEncrypt(byte[] plaintext, byte[] key) {
    try {
        byte[] iv = new byte[16];
        secureRandom.get().nextBytes(iv);
        GCMBlockCipher aes = new GCMBlockCipher(new AESEngine());
        CipherParameters ivAndKey = new ParametersWithIV(new KeyParameter(key), iv);
        aes.init(true, ivAndKey);
        byte[] output = new byte[aes.getOutputSize(plaintext.length)];
        int ciphertextLength = aes.processBytes(plaintext, 0, plaintext.length, output, 0);
        ciphertextLength += aes.doFinal(output, ciphertextLength);
        byte[] result = new byte[iv.length + ciphertextLength];
        System.arraycopy(iv, 0, result, 0, iv.length);
        System.arraycopy(output, 0, result, iv.length, ciphertextLength);
        return result;
    } catch (InvalidCipherTextException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}