- /// <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();
- }
调用加密 解密看效果
- public static string md4j = "";
- static void Main(string[] args)
- {
- // 加密
- Encrypt("123456");
- Decrypt(md4j);
- }
来源: https://www.jb51.net/article/148907.htm