最近在做一个C#小程序时用到了MD5加密，发现WinForm中没有现在的方法？
后来在微软官方网站上找到了相应的方法，现收藏一下。希望能帮到有同样需求的你。
兼容版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0
示例
下面的代码示例计算字符串的 MD5 哈希值，并将该哈希作为 32 字符的十六进制格式字符串返回。此代码示例中创建的哈希字符串与能创建 32 字符的十六进制格式哈希字符串的任何 MD5 哈希函数（在任何平台上）兼容。
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using System; using System.Security.Cryptography; using System.Text; class Example { // Hash an input string and return the hash as // a 32 character hexadecimal string. static string getMd5Hash(string input) { // Create a new instance of the MD5CryptoServiceProvider object. MD5 md5Hasher = MD5.Create(); // Convert the input string to a byte array and compute the hash. byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input)); // Create a new Stringbuilder to collect the bytes // and create a string. StringBuilder sBuilder = new StringBuilder(); // Loop through each byte of the hashed data // and format each one as a hexadecimal string. for (int i = 0; i < data.Length; i++) { sBuilder.Append(data[i].ToString("x2")); } // Return the hexadecimal string. return sBuilder.ToString(); } // Verify a hash against a string. static bool verifyMd5Hash(string input, string hash) { // Hash the input. string hashOfInput = getMd5Hash(input); // Create a StringComparer an comare the hashes. StringComparer comparer = StringComparer.OrdinalIgnoreCase; if (0 == comparer.Compare(hashOfInput, hash)) { return true; } else { return false; } } static void Main() { string source = "Hello World!"; string hash = getMd5Hash(source); Console.WriteLine("The MD5 hash of " + source + " is: " + hash + "."); Console.WriteLine("Verifying the hash..."); if (verifyMd5Hash(source, hash)) { Console.WriteLine("The hashes are the same."); } else { Console.WriteLine("The hashes are not same."); } } } // This code example produces the following output: // // The MD5 hash of Hello World! is: ed076287532e86365e841e92bfc50d8c. // Verifying the hash... // The hashes are the same. |
