Examples with PBEParameterSpec javax.crypto.spec.PBEParameterSpec used on opensource projects

Example 66 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project robovm by robovm.

the class BaseWrapCipher method engineInit.

protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException {
    CipherParameters param;
    if (key instanceof BCPBEKey) {
        BCPBEKey k = (BCPBEKey) key;
        if (params instanceof PBEParameterSpec) {
            param = PBE.Util.makePBEParameters(k, params, wrapEngine.getAlgorithmName());
        } else if (k.getParam() != null) {
            param = k.getParam();
        } else {
            throw new InvalidAlgorithmParameterException("PBE requires PBE parameters to be set.");
        }
    } else {
        param = new KeyParameter(key.getEncoded());
    }
    if (params instanceof IvParameterSpec) {
        IvParameterSpec iv = (IvParameterSpec) params;
        param = new ParametersWithIV(param, iv.getIV());
    }
    if (param instanceof KeyParameter && ivSize != 0) {
        iv = new byte[ivSize];
        random.nextBytes(iv);
        param = new ParametersWithIV(param, iv);
    }
    switch(opmode) {
        case Cipher.WRAP_MODE:
            wrapEngine.init(true, param);
            break;
        case Cipher.UNWRAP_MODE:
            wrapEngine.init(false, param);
            break;
        case Cipher.ENCRYPT_MODE:
        case Cipher.DECRYPT_MODE:
            throw new IllegalArgumentException("engine only valid for wrapping");
        default:
            System.out.println("eeek!");
    }
}

Example 67 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project robovm by robovm.

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 BCPBEKey) {
        BCPBEKey k = (BCPBEKey) 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 68 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project yyl_example by Relucent.

the class PBEWithMD5AndDES_Encrypt method decrypt.

/**
	 * 将加密文本进行解密
	 * @param encryptText String
	 * @return String
	 */
public String decrypt(String encryptText) throws Exception {
    if (encryptText == null || encryptText.length() == 0) {
        return "";
    }
    PBEKeySpec pbks = new PBEKeySpec((password).toCharArray());
    SecretKeyFactory skf = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    SecretKey k = skf.generateSecret(pbks);
    StringTokenizer st = new StringTokenizer(hex2string(encryptText), " ");
    int num = 0;
    byte[] salt = new byte[8];
    while (st.hasMoreTokens() && (num < 8)) {
        salt[num] = (byte) (Integer.parseInt(st.nextToken()));
        num++;
    }
    int count = 0;
    byte[] cbtemp = new byte[2000];
    while (st.hasMoreTokens()) {
        cbtemp[count] = (byte) (Integer.parseInt(st.nextToken()));
        count++;
    }
    byte[] cb = new byte[count];
    for (int i = 0; i < cb.length; i++) {
        cb[i] = cbtemp[i];
    }
    Cipher cp = Cipher.getInstance("PBEWithMD5AndDES");
    PBEParameterSpec ps = new PBEParameterSpec(salt, 1000);
    cp.init(Cipher.DECRYPT_MODE, k, ps);
    byte[] ptext = cp.doFinal(cb);
    return new String(ptext, encoding);
}

Example 69 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project jdk8u_jdk by JetBrains.

the class PKCS12KeyStore method calculateMac.

/*
     * Calculate MAC using HMAC algorithm (required for password integrity)
     *
     * Hash-based MAC algorithm combines secret key with message digest to
     * create a message authentication code (MAC)
     */
private byte[] calculateMac(char[] passwd, byte[] data) throws IOException {
    byte[] mData = null;
    String algName = "SHA1";
    try {
        // Generate a random salt.
        byte[] salt = getSalt();
        // generate MAC (MAC key is generated within JCE)
        Mac m = Mac.getInstance("HmacPBESHA1");
        PBEParameterSpec params = new PBEParameterSpec(salt, iterationCount);
        SecretKey key = getPBEKey(passwd);
        m.init(key, params);
        m.update(data);
        byte[] macResult = m.doFinal();
        // encode as MacData
        MacData macData = new MacData(algName, macResult, salt, iterationCount);
        DerOutputStream bytes = new DerOutputStream();
        bytes.write(macData.getEncoded());
        mData = bytes.toByteArray();
    } catch (Exception e) {
        throw new IOException("calculateMac failed: " + e, e);
    }
    return mData;
}

Example 70 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project jdk8u_jdk by JetBrains.

the class DefaultPBEWrapper method initCipher.

/**
     * Instantiate Cipher for the PBE algorithm.
     *
     * @param mode Cipher mode: encrypt or decrypt.
     * @return Cipher in accordance to the PBE algorithm
     * @throws java.security.GeneralSecurityException
     */
@Override
protected Cipher initCipher(int mode) throws GeneralSecurityException {
    Provider provider = Security.getProvider("SunJCE");
    if (provider == null) {
        throw new RuntimeException("SunJCE provider does not exist.");
    }
    SecretKey key = SecretKeyFactory.getInstance(baseAlgo).generateSecret(new PBEKeySpec(password.toCharArray()));
    Cipher ci = Cipher.getInstance(transformation, provider);
    ci.init(mode, key, new PBEParameterSpec(salt, DEFAULT_ITERATION));
    return ci;
}