using System;using System.Collections.Generic;using System.Linq;using System.Security.Cryptography;using System.Text;using System.Threading.Tasks;namespace HashTest{    class Program    {        static void Main(string[] args)        {            string plainText = ".Net5 框架";            // 因为所有哈希函数的输入类型都是 Byte[]，所以必须先将源数据转换为字节数组后再计算哈希值。            byte[] plainByte = ASCIIEncoding.ASCII.GetBytes(plainText);            Console.WriteLine("明文字符串：" + plainText);            Console.WriteLine("======================================================");            Console.ForegroundColor = ConsoleColor.Red;            MD5Hash(plainByte);            Console.ForegroundColor = ConsoleColor.Green;            SHA1Hash(plainByte);            Console.ForegroundColor = ConsoleColor.DarkYellow;            SHA512Hash(plainByte);            Console.ReadKey();        }        /// <summary>        /// MD5哈希计算        /// </summary>        static void MD5Hash(byte[] plainByte)        {                        // MD5本身是一个抽象类            MD5 md5 = MD5.Create();   // 默认实现类：Create("System.Security.Cryptography.MD5");                     byte[] hashByte = md5.ComputeHash(plainByte);            Console.WriteLine("1.0：MD5默认实现类对明文字符串进行哈希计算后的结果：");            Console.WriteLine(ByteArrayToString(hashByte));            Console.WriteLine("======================================================");            // MD5的两个派生类：System.Security.Cryptography.MD5Cng 和 System.Security.Cryptography.MD5CryptoServiceProvider            MD5 md5Cng = MD5.Create("System.Security.Cryptography.MD5Cng");            byte[] cngHashByte = md5Cng.ComputeHash(plainByte);            Console.WriteLine("1.1：设置MD5的静态方法Create的参数为System.Security.Cryptography.MD5Cng，哈希结果为：");            Console.WriteLine(ByteArrayToString(cngHashByte));            Console.WriteLine("======================================================");            MD5 md5CryptoServiceProvider = MD5.Create("System.Security.Cryptography.MD5CryptoServiceProvider");            byte[] providerHashByte = md5CryptoServiceProvider.ComputeHash(plainByte);            Console.WriteLine("1.2：设置MD5的静态方法Create的参数为System.Security.Cryptography.MD5CryptoServiceProvider，哈希结果为：");            Console.WriteLine(ByteArrayToString(providerHashByte));            Console.WriteLine("======================================================");            // 直接使用派生类进行哈希            MD5Cng md5Cng2 = new MD5Cng();            byte[] cngHashByte2 = md5Cng.ComputeHash(plainByte);            Console.WriteLine("2.0：直接使用MD5的派生类MD5Cng进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(cngHashByte2));            Console.WriteLine("======================================================");            MD5CryptoServiceProvider md5CryptoServiceProvider2 = new MD5CryptoServiceProvider();            byte[] providerHashByte2 = md5Cng.ComputeHash(plainByte);            Console.WriteLine("2.1：直接使用MD5的派生类MD5CryptoServiceProvider进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(providerHashByte2));            Console.WriteLine("======================================================");        }        /// <summary>        /// SHA1哈希        /// </summary>        /// <param name="plainByte"></param>        static void SHA1Hash(byte[] plainByte)        {            // SHA1本身是一个抽象类            SHA1 sha1 = SHA1.Create();   // 默认实现类：Create("System.Security.Cryptography.SHA1");                     byte[] hashByte = sha1.ComputeHash(plainByte);            Console.WriteLine("1.0：SHA1默认实现类对明文字符串进行哈希计算后的结果：");            Console.WriteLine(ByteArrayToString(hashByte));            Console.WriteLine("======================================================");            // SHA1的两个派生类：System.Security.Cryptography.SHA1Cng 和 System.Security.Cryptography.SHA1CryptoServiceProvider            SHA1 sha1Cng = SHA1.Create("System.Security.Cryptography.SHA1Cng");            byte[] cngHashByte = sha1Cng.ComputeHash(plainByte);            Console.WriteLine("1.1：设置SHA1的静态方法Create的参数为System.Security.Cryptography.SHA1Cng，哈希结果为：");            Console.WriteLine(ByteArrayToString(cngHashByte));            Console.WriteLine("======================================================");            SHA1 sha1CryptoServiceProvider = SHA1.Create("System.Security.Cryptography.SHA1CryptoServiceProvider");            byte[] providerHashByte = sha1CryptoServiceProvider.ComputeHash(plainByte);            Console.WriteLine("1.2：设置SHA1的静态方法Create的参数为System.Security.Cryptography.SHA1CryptoServiceProvider，哈希结果为：");            Console.WriteLine(ByteArrayToString(providerHashByte));            Console.WriteLine("======================================================");            // 直接使用派生类进行哈希            SHA1Cng sha1Cng2 = new SHA1Cng();            byte[] cngHashByte2 = sha1Cng2.ComputeHash(plainByte);            Console.WriteLine("2.0：直接使用SHA1的派生类SHA1Cng进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(cngHashByte2));            Console.WriteLine("======================================================");            SHA1CryptoServiceProvider sha1CryptoServiceProvider2 = new SHA1CryptoServiceProvider();            byte[] providerHashByte2 = sha1CryptoServiceProvider2.ComputeHash(plainByte);            Console.WriteLine("2.1：直接使用SHA1的派生类SHA1CryptoServiceProvider进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(providerHashByte2));            Console.WriteLine("======================================================");         }        static void SHA256Hash(byte[] plainByte)        {        }        static void SHA384Hash(byte[] plainByte)        {        }        static void SHA512Hash(byte[] plainByte)        {            // 直接使用派生类进行哈希            SHA512Cng sha512Cng2 = new SHA512Cng();            byte[] cngHashByte2 = sha512Cng2.ComputeHash(plainByte);            Console.WriteLine("2.0：直接使用SHA512的派生类SHA512Cng进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(cngHashByte2));            Console.WriteLine("======================================================");            SHA512CryptoServiceProvider sha512CryptoServiceProvider2 = new SHA512CryptoServiceProvider();            byte[] providerHashByte2 = sha512CryptoServiceProvider2.ComputeHash(plainByte);            Console.WriteLine("2.1：直接使用SHA512的派生类SHA512CryptoServiceProvider进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(providerHashByte2));            Console.WriteLine("======================================================");            SHA512Managed sha512Managed = new SHA512Managed();            byte[] sha512ManagedHashByte = sha512Managed.ComputeHash(plainByte);            Console.WriteLine("2.2：直接使用SHA512的派生类SHA512Managed进行哈希，哈希结果为：");            Console.WriteLine(ByteArrayToString(sha512ManagedHashByte));            Console.WriteLine("======================================================");        }        /// <summary>        /// 字节数组转化成16进制字符串        /// </summary>        /// <param name="arrInput"></param>        /// <returns></returns>        static string ByteArrayToString(byte[] arrInput)        {            int i;            StringBuilder sOutput = new StringBuilder(arrInput.Length);            for (i = 0; i < arrInput.Length - 1; i++)            {                sOutput.Append(arrInput[i].ToString("X2"));            }            return sOutput.ToString();        }    }}