Examples with CipherParameters org.bouncycastle.crypto.CipherParameters used on opensource projects

Example 1 with CipherParameters

use of org.bouncycastle.crypto.CipherParameters in project XobotOS by xamarin.

the class JCEMac method engineInit.

protected void engineInit(Key key, AlgorithmParameterSpec params) throws InvalidKeyException, InvalidAlgorithmParameterException {
    CipherParameters param;
    if (key == null) {
        throw new InvalidKeyException("key is null");
    }
    if (key instanceof JCEPBEKey) {
        JCEPBEKey k = (JCEPBEKey) key;
        if (k.getParam() != null) {
            param = k.getParam();
        } else if (params instanceof PBEParameterSpec) {
            param = PBE.Util.makePBEMacParameters(k, params);
        } else {
            throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
        }
    } else if (params instanceof IvParameterSpec) {
        param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec) params).getIV());
    } else if (params == null) {
        param = new KeyParameter(key.getEncoded());
    } else {
        throw new InvalidAlgorithmParameterException("unknown parameter type.");
    }
    macEngine.init(param);
}

Example 2 with CipherParameters

use of org.bouncycastle.crypto.CipherParameters in project XobotOS by xamarin.

the class JDKKeyStore method engineLoad.

public void engineLoad(InputStream stream, char[] password) throws IOException {
    table.clear();
    if (// just initialising
    stream == null) {
        return;
    }
    DataInputStream dIn = new DataInputStream(stream);
    int version = dIn.readInt();
    if (version != STORE_VERSION) {
        if (version != 0) {
            throw new IOException("Wrong version of key store.");
        }
    }
    byte[] salt = new byte[dIn.readInt()];
    dIn.readFully(salt);
    int iterationCount = dIn.readInt();
    //
    // we only do an integrity check if the password is provided.
    //
    // BEGIN android-changed
    HMac hMac = new HMac(new OpenSSLDigest.SHA1());
    // END android-changed
    if (password != null && password.length != 0) {
        byte[] passKey = PBEParametersGenerator.PKCS12PasswordToBytes(password);
        // BEGIN android-changed
        PBEParametersGenerator pbeGen = new PKCS12ParametersGenerator(new OpenSSLDigest.SHA1());
        // END android-changed
        pbeGen.init(passKey, salt, iterationCount);
        CipherParameters macParams = pbeGen.generateDerivedMacParameters(hMac.getMacSize());
        Arrays.fill(passKey, (byte) 0);
        hMac.init(macParams);
        MacInputStream mIn = new MacInputStream(dIn, hMac);
        loadStore(mIn);
        // Finalise our mac calculation
        byte[] mac = new byte[hMac.getMacSize()];
        hMac.doFinal(mac, 0);
        // TODO Should this actually be reading the remainder of the stream?
        // Read the original mac from the stream
        byte[] oldMac = new byte[hMac.getMacSize()];
        dIn.readFully(oldMac);
        if (!Arrays.constantTimeAreEqual(mac, oldMac)) {
            table.clear();
            throw new IOException("KeyStore integrity check failed.");
        }
    } else {
        loadStore(dIn);
        // TODO Should this actually be reading the remainder of the stream?
        // Parse the original mac from the stream too
        byte[] oldMac = new byte[hMac.getMacSize()];
        dIn.readFully(oldMac);
    }
}

Example 3 with CipherParameters

use of org.bouncycastle.crypto.CipherParameters in project XobotOS by xamarin.

the class JCEStreamCipher method engineInit.

protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException {
    CipherParameters param;
    this.pbeSpec = null;
    this.pbeAlgorithm = null;
    this.engineParams = null;
    //
    if (!(key instanceof SecretKey)) {
        throw new InvalidKeyException("Key for algorithm " + key.getAlgorithm() + " not suitable for symmetric enryption.");
    }
    if (key instanceof JCEPBEKey) {
        JCEPBEKey k = (JCEPBEKey) key;
        if (k.getOID() != null) {
            pbeAlgorithm = k.getOID().getId();
        } else {
            pbeAlgorithm = k.getAlgorithm();
        }
        if (k.getParam() != null) {
            param = k.getParam();
            pbeSpec = new PBEParameterSpec(k.getSalt(), k.getIterationCount());
        } else if (params instanceof PBEParameterSpec) {
            param = PBE.Util.makePBEParameters(k, params, cipher.getAlgorithmName());
            pbeSpec = (PBEParameterSpec) params;
        } else {
            throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
        }
        if (k.getIvSize() != 0) {
            ivParam = (ParametersWithIV) param;
        }
    } else if (params == null) {
        param = new KeyParameter(key.getEncoded());
    } else if (params instanceof IvParameterSpec) {
        param = new ParametersWithIV(new KeyParameter(key.getEncoded()), ((IvParameterSpec) params).getIV());
        ivParam = (ParametersWithIV) param;
    } else {
        throw new IllegalArgumentException("unknown parameter type.");
    }
    if ((ivLength != 0) && !(param instanceof ParametersWithIV)) {
        SecureRandom ivRandom = random;
        if (ivRandom == null) {
            ivRandom = new SecureRandom();
        }
        if ((opmode == Cipher.ENCRYPT_MODE) || (opmode == Cipher.WRAP_MODE)) {
            byte[] iv = new byte[ivLength];
            ivRandom.nextBytes(iv);
            param = new ParametersWithIV(param, iv);
            ivParam = (ParametersWithIV) param;
        } else {
            throw new InvalidAlgorithmParameterException("no IV set when one expected");
        }
    }
    switch(opmode) {
        case Cipher.ENCRYPT_MODE:
        case Cipher.WRAP_MODE:
            cipher.init(true, param);
            break;
        case Cipher.DECRYPT_MODE:
        case Cipher.UNWRAP_MODE:
            cipher.init(false, param);
            break;
        default:
            System.out.println("eeek!");
    }
}

Example 4 with CipherParameters

use of org.bouncycastle.crypto.CipherParameters in project XobotOS by xamarin.

the class JDKDSASigner method engineInitSign.

protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException {
    CipherParameters param;
    // BEGIN android-removed
    // if (privateKey instanceof GOST3410Key)
    // {
    //     param = GOST3410Util.generatePrivateKeyParameter(privateKey);
    // }
    // else
    // {
    // END android-removed
    param = DSAUtil.generatePrivateKeyParameter(privateKey);
    if (random != null) {
        param = new ParametersWithRandom(param, random);
    }
    digest.reset();
    signer.init(true, param);
}

Example 5 with CipherParameters

use of org.bouncycastle.crypto.CipherParameters in project XobotOS by xamarin.

the class PKCS5S2ParametersGenerator method F.

private void F(byte[] P, byte[] S, int c, byte[] iBuf, byte[] out, int outOff) {
    byte[] state = new byte[hMac.getMacSize()];
    CipherParameters param = new KeyParameter(P);
    hMac.init(param);
    if (S != null) {
        hMac.update(S, 0, S.length);
    }
    hMac.update(iBuf, 0, iBuf.length);
    hMac.doFinal(state, 0);
    System.arraycopy(state, 0, out, outOff, state.length);
    if (c == 0) {
        throw new IllegalArgumentException("iteration count must be at least 1.");
    }
    for (int count = 1; count < c; count++) {
        hMac.init(param);
        hMac.update(state, 0, state.length);
        hMac.doFinal(state, 0);
        for (int j = 0; j != state.length; j++) {
            out[outOff + j] ^= state[j];
        }
    }
}