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

Example 71 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project ButterRemote-Android by se-bastiaan.

the class ObscuredSharedPreferences method encrypt.

protected String encrypt(String value) {
    try {
        final byte[] bytes = value != null ? value.getBytes(UTF8) : new byte[0];
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(PBE_WITH_MD5_AND_DES);
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(SEKRIT));
        Cipher pbeCipher = Cipher.getInstance(PBE_WITH_MD5_AND_DES);
        pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(Settings.Secure.getString(context.getContentResolver(), Settings.System.ANDROID_ID).getBytes(UTF8), 20));
        return new String(Base64.encode(pbeCipher.doFinal(bytes), Base64.NO_WRAP), UTF8);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 72 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project XobotOS by xamarin.

the class JDKPKCS12KeyStore method cryptData.

protected byte[] cryptData(boolean forEncryption, AlgorithmIdentifier algId, char[] password, boolean wrongPKCS12Zero, byte[] data) throws IOException {
    String algorithm = algId.getObjectId().getId();
    PKCS12PBEParams pbeParams = new PKCS12PBEParams((ASN1Sequence) algId.getParameters());
    PBEKeySpec pbeSpec = new PBEKeySpec(password);
    try {
        SecretKeyFactory keyFact = SecretKeyFactory.getInstance(algorithm, bcProvider);
        PBEParameterSpec defParams = new PBEParameterSpec(pbeParams.getIV(), pbeParams.getIterations().intValue());
        JCEPBEKey key = (JCEPBEKey) keyFact.generateSecret(pbeSpec);
        key.setTryWrongPKCS12Zero(wrongPKCS12Zero);
        Cipher cipher = Cipher.getInstance(algorithm, bcProvider);
        int mode = forEncryption ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE;
        cipher.init(mode, key, defParams);
        return cipher.doFinal(data);
    } catch (Exception e) {
        throw new IOException("exception decrypting data - " + e.toString());
    }
}

Example 73 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project XobotOS by xamarin.

the class JDKKeyStore method makePBECipher.

protected Cipher makePBECipher(String algorithm, int mode, char[] password, byte[] salt, int iterationCount) throws IOException {
    try {
        PBEKeySpec pbeSpec = new PBEKeySpec(password);
        SecretKeyFactory keyFact = SecretKeyFactory.getInstance(algorithm, BouncyCastleProvider.PROVIDER_NAME);
        PBEParameterSpec defParams = new PBEParameterSpec(salt, iterationCount);
        Cipher cipher = Cipher.getInstance(algorithm, BouncyCastleProvider.PROVIDER_NAME);
        cipher.init(mode, keyFact.generateSecret(pbeSpec), defParams);
        return cipher;
    } catch (Exception e) {
        throw new IOException("Error initialising store of key store: " + e);
    }
}

Example 74 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project XobotOS by xamarin.

the class JDKPKCS12KeyStore method calculatePbeMac.

private static byte[] calculatePbeMac(DERObjectIdentifier oid, byte[] salt, int itCount, char[] password, boolean wrongPkcs12Zero, byte[] data) throws Exception {
    SecretKeyFactory keyFact = SecretKeyFactory.getInstance(oid.getId(), bcProvider);
    PBEParameterSpec defParams = new PBEParameterSpec(salt, itCount);
    PBEKeySpec pbeSpec = new PBEKeySpec(password);
    JCEPBEKey key = (JCEPBEKey) keyFact.generateSecret(pbeSpec);
    key.setTryWrongPKCS12Zero(wrongPkcs12Zero);
    Mac mac = Mac.getInstance(oid.getId(), bcProvider);
    mac.init(key, defParams);
    mac.update(data);
    return mac.doFinal();
}

Example 75 with PBEKeySpec

use of javax.crypto.spec.PBEKeySpec in project OpenAM by OpenRock.

the class DataEncryptor method encryptWithSymmetricKey.

/**
     * Encrypts the given data with a symmetric key that was generated
     * using given shared secret. 
     * @param data the data to be encrypted.
     * @param encAlgorithm the encryption algorithm to be used.
     *        The encryption algorithm must be one of the supported
     *        algorithm by the underlying JCE encryption provider.
     *        For password based encryptions, the encryption algorithm
     *        PBEWithMD5AndDES is commonly used. 
     * @param secret the shared secret to be used for symmetric encryption.
     * @return the encrypted data in Base64 encoded format. 
     */
public static String encryptWithSymmetricKey(String data, String encAlgorithm, String secret) throws Exception {
    try {
        String algorithm = encAlgorithm;
        if (!algorithm.startsWith("PBEWith")) {
            algorithm = "PBEWithMD5And" + encAlgorithm;
        }
        SecretKeyFactory skFactory = SecretKeyFactory.getInstance(algorithm);
        PBEKeySpec pbeKeySpec = new PBEKeySpec(secret.toCharArray());
        SecretKey sKey = skFactory.generateSecret(pbeKeySpec);
        Cipher cipher = Cipher.getInstance(algorithm);
        cipher.init(Cipher.ENCRYPT_MODE, sKey, pbeParameterSpec);
        byte[] encData = cipher.doFinal(data.getBytes("UTF-8"));
        encData = addPrefix(encData);
        return Base64.encode(encData);
    } catch (NoSuchAlgorithmException nse) {
        throw new Exception(nse.getMessage());
    }
}