[转载]C# MD5-16位加密实例,32位加密实例(两种方法) – 亲,注意身体 – 博客园.
1.MD5 16位加密实例 using System; using System.Collections.Generic; using System.Text; using System.Security.Cryptography; namespace md5 { class Program { static void Main(string[] args) { Console.WriteLine(UserMd5("8")); Console.WriteLine(GetMd5Str("8")); } /// /// MD5 16位加密 加密后密码为大写 /// ////// public static string GetMd5Str(string ConvertString) { MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(ConvertString)), 4, 8); t2 = t2.Replace("-", ""); return t2; } /// /// MD5 16位加密 加密后密码为小写 /// ////// public static string GetMd5Str(string ConvertString) { MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); string t2 = BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(ConvertString)), 4, 8); t2 = t2.Replace("-", ""); t2 = t2.ToLower(); return t2; } /// /// MD5 32位加密 /// ////// static string UserMd5(string str) { string cl = str; string pwd = ""; MD5 md5 = MD5.Create();//实例化一个md5对像 // 加密后是一个字节类型的数组,这里要注意编码UTF8/Unicode等的选择 byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(cl)); // 通过使用循环,将字节类型的数组转换为字符串,此字符串是常规字符格式化所得 for (int i = 0; i < s.Length; i++) { // 将得到的字符串使用十六进制类型格式。格式后的字符是小写的字母,如果使用大写(X)则格式后的字符是大写字符 pwd = pwd + s[i].ToString("X"); } return pwd; } } } using System.Security.Cryptography; using System.Text; public static string StringToMD5Hash(string inputString) { MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); byte[] encryptedBytes = md5.ComputeHash(Encoding.ASCII.GetBytes(inputString)); StringBuilder sb = new StringBuilder(); for (int i = 0; i < encryptedBytes.Length; i++) { sb.AppendFormat("{0:x2}", encryptedBytes[i]); } return sb.ToString(); }