.Net中 DES加密 ECB模式 PKCS7

.Net中 DES加密 ECB模式 PKCS7的代码，已经测试过可以直接使用：
加密方法：

   /// 
 
        /// 加密字符串
        /// 加密密钥必须为8位
        /// 
 
        /// 被加密的字符串 
        /// 8位长度密钥 
        /// 加密后的数据 
        public static string DesEncrypt(string strText, string strEncrKey)
        {
            if(strEncrKey.Length < 8)
            {
                throw new Exception("密钥长度无效，密钥必须是8位！");
            }

            StringBuilder ret = new StringBuilder();
            using var des = new DESCryptoServiceProvider();

            byte[] inputByteArray = Encoding.UTF8.GetBytes(strText);
            des.Mode = CipherMode.ECB;
            des.Padding = PaddingMode.PKCS7;
            des.Key = Encoding.UTF8.GetBytes(strEncrKey.Substring(0, 8));
            //des.IV = Encoding.ASCII.GetBytes(strEncrKey.Substring(0, 8));
            MemoryStream ms = new MemoryStream();
            using var cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();

            var res = Convert.ToBase64String(ms.ToArray());
            return UrlEncodeFromJava(res);
        }

解密方法：

     /// 

        /// ECB解密
        /// 
        /// 解密字符串
        /// 秘钥
        /// 
        public static string DesDecrypt(string data, string key)
        {
            using var des = new DESCryptoServiceProvider();
            des.Key = Encoding.UTF8.GetBytes(key.Substring(0, 8));
            des.Mode = CipherMode.ECB;
            des.Padding = PaddingMode.PKCS7;
            MemoryStream memory;
            CryptoStream crypto;
            byte[] byt;
            byt = Convert.FromBase64String(data);
            memory = new MemoryStream();
            crypto = new CryptoStream(memory, des.CreateDecryptor(), CryptoStreamMode.Write);
            crypto.Write(byt, 0, byt.Length);
            crypto.FlushFinalBlock();
            crypto.Close();
            return Encoding.UTF8.GetString(memory.ToArray());
        }