C#盤算字符串哈希值（MD5、SHA）的辦法小結

C#盤算字符串哈希值（MD5、SHA）的辦法小結。本站提示廣大學習愛好者：（C#盤算字符串哈希值（MD5、SHA）的辦法小結）文章只能為提供參考，不一定能成為您想要的結果。以下是C#盤算字符串哈希值（MD5、SHA）的辦法小結正文

本文實例講述了C#盤算字符串哈希值（MD5、SHA）的辦法。分享給年夜家供年夜家參考。詳細以下：

1、關於本文

本文中是一個類庫，包含上面幾個函數：

① 盤算32位MD5碼（年夜小寫）：Hash_MD5_32

② 盤算16位MD5碼（年夜小寫）：Hash_MD5_16

③ 盤算32位2重MD5碼（年夜小寫）：Hash_2_MD5_32

④ 盤算16位2重MD5碼（年夜小寫）：Hash_2_MD5_16

⑤ 盤算SHA-1碼（年夜小寫）：Hash_SHA_1

⑥ 盤算SHA-256碼（年夜小寫）：Hash_SHA_256

⑦ 盤算SHA-384碼（年夜小寫）：Hash_SHA_384

⑧ 盤算SHA-512碼（年夜小寫）：Hash_SHA_512

編譯後被打包成文件HashTools.dll，其他法式可以在添加援用後對這些函數停止挪用

2、類庫中各函數代碼

1. 類庫構造

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HashTools
{
 public class HashHelper
 {
  //各個函數
 }
}

2. 盤算32位MD5碼（年夜小寫）：Hash_MD5_32

/// <summary>
/// 盤算32位MD5碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_MD5_32(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.MD5CryptoServiceProvider MD5CSP
   = new System.Security.Cryptography.MD5CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = MD5CSP.ComputeHash(bytValue);
  MD5CSP.Clear();
  //依據盤算獲得的Hash碼翻譯為MD5碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

3. 盤算16位MD5碼（年夜小寫）：Hash_MD5_16

/// <summary>
/// 盤算16位MD5碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_MD5_16(string word, bool toUpper = true)
{
 try
 {
  string sHash = Hash_MD5_32(word).Substring(8, 16);
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

4. 盤算32位2重MD5碼（年夜小寫）：Hash_2_MD5_32

/// <summary>
/// 盤算32位2重MD5碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_2_MD5_32(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.MD5CryptoServiceProvider MD5CSP
   = new System.Security.Cryptography.MD5CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = MD5CSP.ComputeHash(bytValue);
  //依據盤算獲得的Hash碼翻譯為MD5碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  bytValue = System.Text.Encoding.UTF8.GetBytes(sHash);
  bytHash = MD5CSP.ComputeHash(bytValue);
  MD5CSP.Clear();
  sHash = "";
  //依據盤算獲得的Hash碼翻譯為MD5碼
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

5. 盤算16位2重MD5碼（年夜小寫）：Hash_2_MD5_16

/// <summary>
/// 盤算16位2重MD5碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_2_MD5_16(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.MD5CryptoServiceProvider MD5CSP
    = new System.Security.Cryptography.MD5CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = MD5CSP.ComputeHash(bytValue);
  //依據盤算獲得的Hash碼翻譯為MD5碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  sHash = sHash.Substring(8, 16);
  bytValue = System.Text.Encoding.UTF8.GetBytes(sHash);
  bytHash = MD5CSP.ComputeHash(bytValue);
  MD5CSP.Clear();
  sHash = "";
  //依據盤算獲得的Hash碼翻譯為MD5碼
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  sHash = sHash.Substring(8, 16);
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

6. 盤算SHA-1碼（年夜小寫）：Hash_SHA_1

/// <summary>
/// 盤算SHA-1碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_SHA_1(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.SHA1CryptoServiceProvider SHA1CSP
   = new System.Security.Cryptography.SHA1CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = SHA1CSP.ComputeHash(bytValue);
  SHA1CSP.Clear();
  //依據盤算獲得的Hash碼翻譯為SHA-1碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

7. 盤算SHA-256碼（年夜小寫）：Hash_SHA_256

/// <summary>
/// 盤算SHA-256碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_SHA_256(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.SHA256CryptoServiceProvider SHA256CSP
   = new System.Security.Cryptography.SHA256CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = SHA256CSP.ComputeHash(bytValue);
  SHA256CSP.Clear();
  //依據盤算獲得的Hash碼翻譯為SHA-1碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

8. 盤算SHA-384碼（年夜小寫）：Hash_SHA_384

/// <summary>
/// 盤算SHA-384碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_SHA_384(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.SHA384CryptoServiceProvider SHA384CSP
   = new System.Security.Cryptography.SHA384CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = SHA384CSP.ComputeHash(bytValue);
  SHA384CSP.Clear();
  //依據盤算獲得的Hash碼翻譯為SHA-1碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

9. 盤算SHA-512碼（年夜小寫）：Hash_SHA_512

/// <summary>
/// 盤算SHA-512碼
/// </summary>
/// <param name="word">字符串</param>
/// <param name="toUpper">前往哈希值格局 true：英文年夜寫，false：英文小寫</param>
/// <returns></returns>
public static string Hash_SHA_512(string word, bool toUpper = true)
{
 try
 {
  System.Security.Cryptography.SHA512CryptoServiceProvider SHA512CSP
   = new System.Security.Cryptography.SHA512CryptoServiceProvider();
  byte[] bytValue = System.Text.Encoding.UTF8.GetBytes(word);
  byte[] bytHash = SHA512CSP.ComputeHash(bytValue);
  SHA512CSP.Clear();
  //依據盤算獲得的Hash碼翻譯為SHA-1碼
  string sHash = "", sTemp = "";
  for (int counter = 0; counter < bytHash.Count(); counter++)
  {
   long i = bytHash[counter] / 16;
   if (i > 9)
   {
    sTemp = ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp = ((char)(i + 0x30)).ToString();
   }
   i = bytHash[counter] % 16;
   if (i > 9)
   {
    sTemp += ((char)(i - 10 + 0x41)).ToString();
   }
   else
   {
    sTemp += ((char)(i + 0x30)).ToString();
   }
   sHash += sTemp;
  }
  //依據年夜小寫規矩決議前往的字符串
  return toUpper ? sHash : sHash.ToLower();
 }
 catch (Exception ex)
 {
  throw new Exception(ex.Message);
 }
}

3、函數挪用

樹立項目ComputeHash，添加對HashTools.dll庫的援用。並添加代碼：
using HashTools;
然後在Main函數中添加以下代碼：

static void Main(string[] args)
{
 Console.WriteLine("MD5 of \"abc\"");
 Console.WriteLine("MD5_32(Upper): {0}", 
  HashHelper.Hash_MD5_32("abc"));
 Console.WriteLine("MD5_32(Lower): {0}",
  HashHelper.Hash_MD5_32("abc", false));
 Console.WriteLine("MD5_16(Upper): {0}",
  HashHelper.Hash_MD5_16("abc"));
 Console.WriteLine("MD5_16(Lower): {0}",
  HashHelper.Hash_MD5_16("abc", false));
 Console.WriteLine("2_MD5_32(Upper): {0}", 
  HashHelper.Hash_2_MD5_32("abc"));
 Console.WriteLine("2_MD5_32(Lower): {0}", 
  HashHelper.Hash_2_MD5_32("abc", false));
 Console.WriteLine("2_MD5_32(Upper): {0}", 
  HashHelper.Hash_2_MD5_16("abc"));
 Console.WriteLine("2_MD5_32(Lower): {0}", 
  HashHelper.Hash_2_MD5_16("abc", false));
 Console.WriteLine("SHA of \"abc\"");
 Console.WriteLine("SHA-1(Upper): {0}", 
  HashHelper.Hash_SHA_1("abc"));
 Console.WriteLine("SHA-1(Lower): {0}", 
  HashHelper.Hash_SHA_1("abc", false));
 Console.WriteLine("SHA-256(Upper): {0}",
  HashHelper.Hash_SHA_256("abc"));
 Console.WriteLine("SHA-256(Lower): {0}",
  HashHelper.Hash_SHA_256("abc", false));
 Console.WriteLine("SHA-384(Upper): {0}",
  HashHelper.Hash_SHA_384("abc"));
 Console.WriteLine("SHA-384(Lower): {0}",
  HashHelper.Hash_SHA_384("abc", false));
 Console.WriteLine("SHA-512(Upper): {0}", 
  HashHelper.Hash_SHA_512("abc"));
 Console.WriteLine("SHA-512(Lower): {0}", 
  HashHelper.Hash_SHA_512("abc", false));
 Console.ReadLine();
}

運轉成果以下：

願望本文所述對年夜家的C#法式設計有所贊助。