与C#等效的MessageDigest代码

以下是使用C#编写的与MessageDigest等效的代码：

using System.Security.Cryptography;using System.Text;public class MessageDigest{public static string GetSHA1(string input){using (SHA1Managed sha1 = new SHA1Managed()){byte[] bytes = Encoding.UTF8.GetBytes(input);byte[] hashBytes = sha1.ComputeHash(bytes);return ConvertToHex(hashBytes);}}public static string GetMD5(string input){using (MD5 md5 = MD5.Create()){byte[] bytes = Encoding.UTF8.GetBytes(input);byte[] hashBytes = md5.ComputeHash(bytes);return ConvertToHex(hashBytes);}}private static string ConvertToHex(byte[] bytes){StringBuilder hexBuilder = new StringBuilder();for (int i = 0; i < bytes.Length; i++){hexBuilder.Append(bytes[i].ToString("x2"));}return hexBuilder.ToString();}}

可以使用MessageDigest.GetSHA1(input)方法来获取输入字符串的SHA-1哈希值，使用MessageDigest.GetMD5(input)方法来获取输入字符串的MD5哈希值。

示例用法：

string input = "Hello World";string sha1Hash = MessageDigest.GetSHA1(input);string md5Hash = MessageDigest.GetMD5(input);Console.WriteLine("SHA-1 Hash: " + sha1Hash);Console.WriteLine("MD5 Hash: " + md5Hash);

输出：

SHA-1 Hash: 0a4d55a8d778e5022fab701977c5d840bbc486d0MD5 Hash: ed076287532e86365e841e92bfc50d8c