.net core 使用MD5加密解密字符串

 /// <summary> ???????/// 加密 ???????/// </summary> ???????/// <param name="Text">要加密的文本</param> ???????/// <param name="sKey">秘钥</param> ???????/// <returns></returns> ???????public static string Encrypt(string Text, string sKey="test") ???????{ ???????????DESCryptoServiceProvider des = new DESCryptoServiceProvider(); ???????????byte[] inputByteArray; ???????????inputByteArray = Encoding.Default.GetBytes(Text); ???????????des.Key = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0,8)); ???????????des.IV = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8)); ???????????System.IO.MemoryStream ms = new System.IO.MemoryStream(); ???????????CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); ???????????cs.Write(inputByteArray, 0, inputByteArray.Length); ???????????cs.FlushFinalBlock(); ???????????StringBuilder ret = new StringBuilder(); ???????????foreach (byte b in ms.ToArray()) ???????????{ ???????????????ret.AppendFormat("{0:X2}", b); ???????????} ???????????md4j= ret.ToString(); ???????????return ret.ToString(); ???????}

/// <summary> ???????/// 解密 ???????/// </summary> ???????/// <param name="Text"></param> ???????/// <param name="sKey"></param> ???????/// <returns></returns> ???????public static string Decrypt(string Text, string sKey = "test") ???????{ ???????????DESCryptoServiceProvider des = new DESCryptoServiceProvider(); ???????????int len; ???????????len = Text.Length / 2; ???????????byte[] inputByteArray = new byte[len]; ???????????int x, i; ???????????for (x = 0; x < len; x++) ???????????{ ???????????????i = Convert.ToInt32(Text.Substring(x * 2, 2), 16); ???????????????inputByteArray[x] = (byte)i; ???????????} ???????????des.Key = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8)); ???????????des.IV = ASCIIEncoding.ASCII.GetBytes(Md5Hash(sKey).Substring(0, 8)); ???????????System.IO.MemoryStream ms = new System.IO.MemoryStream(); ???????????CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); ???????????cs.Write(inputByteArray, 0, inputByteArray.Length); ???????????cs.FlushFinalBlock(); ???????????return Encoding.Default.GetString(ms.ToArray()); ???????}

 /// <summary> ???????/// 32位MD5加密 ???????/// </summary> ???????/// <param name="input"></param> ???????/// <returns></returns> ???????private static string Md5Hash(string input) ???????{ ???????????MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider(); ???????????byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input)); ???????????StringBuilder sBuilder = new StringBuilder(); ???????????for (int i = 0; i < data.Length; i++) ???????????{ ???????????????sBuilder.Append(data[i].ToString("x2")); ???????????} ???????????return sBuilder.ToString(); ???????}

 ?????public static string md4j = ""; ???????static void Main(string[] args) ???????{ ???????????//加密 ?????????Encrypt("123456"); ?????????Decrypt(md4j); ???????}