C#計算字符串哈希值(MD5、SHA)的方法小結(jié)
本文實例講述了C#計算字符串哈希值(MD5、SHA)的方法。分享給大家供大家參考。具體如下:
一、關(guān)于本文
本文中是一個類庫,包括下面幾個函數(shù):
① 計算32位MD5碼(大小寫):Hash_MD5_32
② 計算16位MD5碼(大小寫):Hash_MD5_16
③ 計算32位2重MD5碼(大小寫):Hash_2_MD5_32
④ 計算16位2重MD5碼(大小寫):Hash_2_MD5_16
⑤ 計算SHA-1碼(大小寫):Hash_SHA_1
⑥ 計算SHA-256碼(大小寫):Hash_SHA_256
⑦ 計算SHA-384碼(大小寫):Hash_SHA_384
⑧ 計算SHA-512碼(大小寫):Hash_SHA_512
編譯后被打包成文件HashTools.dll,其他程序可以在添加引用后對這些函數(shù)進行調(diào)用
二、類庫中各函數(shù)代碼
1. 類庫結(jié)構(gòu)
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(shù) } }
2. 計算32位MD5碼(大小寫):Hash_MD5_32
/// <summary> /// 計算32位MD5碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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(); //根據(jù)計算得到的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; } //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
3. 計算16位MD5碼(大小寫):Hash_MD5_16
/// <summary> /// 計算16位MD5碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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. 計算32位2重MD5碼(大小寫):Hash_2_MD5_32
/// <summary> /// 計算32位2重MD5碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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); //根據(jù)計算得到的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 = ""; //根據(jù)計算得到的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; } //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
5. 計算16位2重MD5碼(大小寫):Hash_2_MD5_16
/// <summary> /// 計算16位2重MD5碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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); //根據(jù)計算得到的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 = ""; //根據(jù)計算得到的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); //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
6. 計算SHA-1碼(大小寫):Hash_SHA_1
/// <summary> /// 計算SHA-1碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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(); //根據(jù)計算得到的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; } //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
7. 計算SHA-256碼(大小寫):Hash_SHA_256
/// <summary> /// 計算SHA-256碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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(); //根據(jù)計算得到的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; } //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
8. 計算SHA-384碼(大小寫):Hash_SHA_384
/// <summary> /// 計算SHA-384碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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(); //根據(jù)計算得到的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; } //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
9. 計算SHA-512碼(大小寫):Hash_SHA_512
/// <summary> /// 計算SHA-512碼 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大寫,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(); //根據(jù)計算得到的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; } //根據(jù)大小寫規(guī)則決定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
三、函數(shù)調(diào)用
建立項目ComputeHash,添加對HashTools.dll庫的引用。并添加代碼:
然后在Main函數(shù)中添加下列代碼:
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(); }
運行結(jié)果如下:
希望本文所述對大家的C#程序設(shè)計有所幫助。
相關(guān)文章
C#使用泛型方法實現(xiàn)操作不同數(shù)據(jù)類型的數(shù)組
這篇文章主要為大家詳細介紹了C#如何使用一個泛型方法對不同類型的數(shù)組進行操作,文中的示例代碼講解詳細,感興趣的小伙伴可以學習一下2024-02-02C#獲取鼠標在listview右鍵點擊單元格的內(nèi)容方法
下面小編就為大家?guī)硪黄狢#獲取鼠標在listview右鍵點擊單元格的內(nèi)容方法。小編覺得挺不錯的,現(xiàn)在就分享給大家,也給大家做個參考。一起跟隨小編過來看看吧2017-01-01C# VB 實現(xiàn)10進制 16進制之間互相轉(zhuǎn)換
如何將10進制轉(zhuǎn)成16進制,又如何將16進制數(shù)轉(zhuǎn)成10進制,本文將介紹C#和VB實現(xiàn)代碼,需要了解的朋友可以參考下2012-11-11C#匿名方法與Delegate類型轉(zhuǎn)換錯誤分析
這篇文章主要介紹了C#匿名方法與Delegate類型轉(zhuǎn)換錯誤,較為詳細的分析了C#匿名方法的用法及Delegate類型轉(zhuǎn)換錯誤問題解決方法,具有一定的實用價值,需要的朋友可以參考下2014-11-11c#中directory 和directoryinfo的使用小結(jié)
當使用C#處理目錄時,可以使用?System.IO?命名空間中的?Directory?和?DirectoryInfo?類來執(zhí)行各種目錄操作,本文主要介紹了c#中directory 和directoryinfo的使用小結(jié),感興趣的可以了解一下2024-02-02