示例#1
0
        public static string Decrypt(string key, string value)
        {
            EncrypEntity entity = new EncrypEntity();

            if (!string.IsNullOrEmpty(key))
            {
                entity.Key = key;
            }
            entity.Value = value;
            return(Decrypt(entity));
        }
示例#2
0
        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="txt"></param>
        /// <returns></returns>
        public static string Decrypt(EncrypEntity entity)
        {
            string txt = entity.Value;
            int    len = txt.Length;

            byte[] bs = new byte[len / 2];

            // 16进制数组转换会byte数组
            for (int i = 0; i < len / 2; i++)
            {
                bs[i] = (byte)(Convert.ToInt32(txt.Substring(i * 2, 2), 16));
            }
            byte[] keys = entity.Encoding.GetBytes(entity.Key); // 密钥转换成字节数组
            // 异或
            for (int i = 0; i < bs.Length; i++)
            {
                bs[i] = (byte)(bs[i] ^ keys[i % keys.Length]);
            }
            // byte数组还原成字符串
            return(entity.Encoding.GetString(bs));
        }
示例#3
0
        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="txt"></param>
        /// <returns></returns>
        public static string Encrypt(EncrypEntity entity)
        {
            StringBuilder sb         = new StringBuilder();
            string        encryptKey = entity.Key;
            Encoding      encoding   = entity.Encoding;

            byte[] bs   = encoding.GetBytes(entity.Value); // 原字符串转换成字节数组
            byte[] keys = encoding.GetBytes(encryptKey);   // 密钥转换成字节数组

            // 异或
            for (int i = 0; i < bs.Length; i++)
            {
                bs[i] = (byte)(bs[i] ^ keys[i % keys.Length]);
            }
            // 编码成16进制数组
            foreach (byte b in bs)
            {
                sb.AppendFormat("{0:X2}", b);
            }
            return(sb.ToString());
        }
示例#4
0
        public static string Encrypt(string value)
        {
            EncrypEntity entity = new EncrypEntity(value);

            return(Encrypt(entity));
        }