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

Example 66 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project musicbrainz-android by jdamcd.

the class SimpleEncrypt method crypto.

private static String crypto(int mode, String secret, String input) throws InvalidKeyException, UnsupportedEncodingException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException {
    DESKeySpec keySpec = new DESKeySpec(secret.getBytes(CHARSET));
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
    SecretKey encryptKey = keyFactory.generateSecret(keySpec);
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(mode, encryptKey);
    if (mode == Cipher.ENCRYPT_MODE) {
        byte[] plainText = input.getBytes(CHARSET);
        return Base64.encodeToString(cipher.doFinal(plainText), Base64.DEFAULT);
    } else if (mode == Cipher.DECRYPT_MODE) {
        byte[] cipherText = Base64.decode(input, Base64.DEFAULT);
        return new String(cipher.doFinal(cipherText), CHARSET);
    }
    return null;
}

Example 67 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project smartmodule by carozhu.

the class DESUtils method decrypt.

/**
 * 解密
 *
 * @param content
 *            待解密内容
 * @param key
 *            解密的密钥
 * @return
 */
public static byte[] decrypt(byte[] content, String key) {
    try {
        SecureRandom random = new SecureRandom();
        DESKeySpec desKey = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey securekey = keyFactory.generateSecret(desKey);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.DECRYPT_MODE, securekey, random);
        return cipher.doFinal(content);
    } catch (Throwable e) {
        e.printStackTrace();
    }
    return null;
}

Example 68 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project DataX by alibaba.

the class DESCipher method encrypt.

/**
 * 　　* 加密
 *
 * 　　*
 *
 * 　　* @param src
 *
 * 　　* 明文(字节)
 *
 * 　　* @param key
 *
 * 　　* 密钥，长度必须是8的倍数
 *
 * 　　* @return 密文(字节)
 *
 * 　　* @throws Exception
 *
 * 　　
 */
public static byte[] encrypt(byte[] src, byte[] key) throws Exception {
    // DES算法要求有一个可信任的随机数源
    SecureRandom sr = new SecureRandom();
    // 从原始密匙数据创建DESKeySpec对象
    DESKeySpec dks = new DESKeySpec(key);
    // 创建一个密匙工厂，然后用它把DESKeySpec转换成
    // 一个SecretKey对象
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher对象实际完成加密操作
    Cipher cipher = Cipher.getInstance(DES);
    // 用密匙初始化Cipher对象
    cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);
    return cipher.doFinal(src);
}

Example 69 with DESKeySpec

use of javax.crypto.spec.DESKeySpec in project oxCore by GluuFederation.

the class StringEncrypter method decrypt.

public String decrypt(final String encryptedString, String encryptionKey, boolean silent) throws EncryptionException {
    lock.lock();
    try {
        final byte[] keyAsBytes = encryptionKey.getBytes(StringEncrypter.UNICODE_FORMAT);
        String encryptionScheme = StringEncrypter.DESEDE_ENCRYPTION_SCHEME;
        KeySpec keySpec;
        if (encryptionScheme.equalsIgnoreCase(StringEncrypter.DESEDE_ENCRYPTION_SCHEME)) {
            keySpec = new DESedeKeySpec(keyAsBytes);
        } else if (encryptionScheme.equalsIgnoreCase(StringEncrypter.DES_ENCRYPTION_SCHEME)) {
            keySpec = new DESKeySpec(keyAsBytes);
        } else {
            throw new IllegalArgumentException("Encryption scheme not supported: " + encryptionScheme);
        }
        return decrypt(encryptedString, keySpec, silent);
    } catch (final Exception e) {
        throw new EncryptionException(e);
    } finally {
        lock.unlock();
    }
}