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

Example 11 with PBEParameterSpec

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

the class CipherTest method getEncryptAlgorithmParameterSpec.

private static AlgorithmParameterSpec getEncryptAlgorithmParameterSpec(String algorithm) {
    if (isPBE(algorithm)) {
        final byte[] salt = new byte[8];
        new SecureRandom().nextBytes(salt);
        return new PBEParameterSpec(salt, 1024);
    }
    if (algorithm.equals("AES/CBC/NOPADDING") || algorithm.equals("AES/CBC/PKCS5PADDING") || algorithm.equals("AES/CFB/NOPADDING") || algorithm.equals("AES/CTR/NOPADDING") || algorithm.equals("AES/CTS/NOPADDING") || algorithm.equals("AES/OFB/NOPADDING")) {
        final byte[] iv = new byte[16];
        new SecureRandom().nextBytes(iv);
        return new IvParameterSpec(iv);
    }
    return null;
}

Example 12 with PBEParameterSpec

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

the class ObscuredSharedPreferences method decrypt.

protected String decrypt(String value) {
    try {
        final byte[] bytes = value != null ? Base64.decode(value, Base64.DEFAULT) : 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.DECRYPT_MODE, key, new PBEParameterSpec(Settings.Secure.getString(context.getContentResolver(), Settings.System.ANDROID_ID).getBytes(UTF8), 20));
        return new String(pbeCipher.doFinal(bytes), UTF8);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 13 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project android-delicious by lexs.

the class ObscuredSharedPreferences method decrypt.

protected String decrypt(String value) {
    try {
        final byte[] bytes = value != null ? Base64.decode(value, Base64.DEFAULT) : new byte[0];
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(secret));
        Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
        pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(getSalt(), 20));
        return new String(pbeCipher.doFinal(bytes), UTF8);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 14 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec in project android-delicious by lexs.

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("PBEWithMD5AndDES");
        SecretKey key = keyFactory.generateSecret(new PBEKeySpec(secret));
        Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
        pbeCipher.init(Cipher.ENCRYPT_MODE, key, new PBEParameterSpec(getSalt(), 20));
        return new String(Base64.encode(pbeCipher.doFinal(bytes), Base64.NO_WRAP), UTF8);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 15 with PBEParameterSpec

use of javax.crypto.spec.PBEParameterSpec 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);
}