Examples with KeyParameter org.bouncycastle.crypto.params.KeyParameter used on opensource projects

Example 86 with KeyParameter

use of org.bouncycastle.crypto.params.KeyParameter in project Skein3Fish by wernerd.

the class SkeinMac method init.

public void init(CipherParameters params) throws IllegalArgumentException {
    ParametersForSkein p = (ParametersForSkein) params;
    KeyParameter kp = (KeyParameter) (p.getParameters());
    skein = new Skein(p.getStateSize(), p.getMacSize(), 0, kp.getKey());
    Xsave = skein.getState();
}

Example 87 with KeyParameter

use of org.bouncycastle.crypto.params.KeyParameter 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 88 with KeyParameter

use of org.bouncycastle.crypto.params.KeyParameter in project elastic-core-maven by OrdinaryDude.

the class Crypto method aesEncrypt.

public static byte[] aesEncrypt(byte[] plaintext, byte[] key) {
    try {
        byte[] iv = new byte[16];
        secureRandom.get().nextBytes(iv);
        PaddedBufferedBlockCipher aes = new PaddedBufferedBlockCipher(new CBCBlockCipher(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);
    }
}

Example 89 with KeyParameter

use of org.bouncycastle.crypto.params.KeyParameter 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);
    }
}

Example 90 with KeyParameter

use of org.bouncycastle.crypto.params.KeyParameter in project cxf by apache.

the class PbesHmacAesWrapKeyEncryptionAlgorithm method createDerivedKey.

static byte[] createDerivedKey(String keyAlgoJwt, int keySize, byte[] password, byte[] saltInput, int pbesCount) {
    byte[] saltValue = createSaltValue(keyAlgoJwt, saltInput);
    final Digest digest;
    int macSigSize = PBES_HMAC_MAP.get(keyAlgoJwt);
    if (macSigSize == 256) {
        digest = new SHA256Digest();
    } else if (macSigSize == 384) {
        digest = new SHA384Digest();
    } else {
        digest = new SHA512Digest();
    }
    PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(digest);
    gen.init(password, saltValue, pbesCount);
    return ((KeyParameter) gen.generateDerivedParameters(keySize * 8)).getKey();
}