/*** DES加密** @param data 加密數(shù)據(jù)* @param key 密鑰* @return 返回加密后的數(shù)據(jù)*/public static byte[] desEncrypt(byte[] data, String key, String charset) {try {Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");byte[] k = charset == null || charset.trim().isEmpty() ? key.getBytes() : key.getBytes(charset);SecretKey secretKey = SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(k));cipher.init(Cipher.ENCRYPT_MODE, secretKey, new IvParameterSpec(k));return cipher.doFinal(data);} catch (Exception e) {return null;}}/*** DES解密** @param data 解密數(shù)據(jù)* @param key 密鑰* @return 返回解密后的數(shù)據(jù)*/public static String desDecrypt(byte[] data, String key, String charset) {try {Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");byte[] k = charset == null || charset.trim().isEmpty() ? key.getBytes() : key.getBytes(charset);cipher.init(Cipher.DECRYPT_MODE, SecretKeyFactory.getInstance("DES").generateSecret(new DESKeySpec(k)), new IvParameterSpec(k));if (charset == null || charset.trim().isEmpty()) {return new String(cipher.doFinal(data));}return new String(cipher.doFinal(data), charset);} catch (Exception e) {return null;}}

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轉(zhuǎn)載于:https://www.cnblogs.com/frankyou/p/6599099.html

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