C#计算字符串哈希值(MD5、SHA)的方法小结
2015-08-18 15:18
1111 查看
本文实例讲述了C#计算字符串哈希值(MD5、SHA)的方法。分享给大家供大家参考。具体如下:
一、关于本文
本文中是一个类库,包括下面几个函数:
① 计算32位MD5码(大小写):Hash_MD5_32
② 计算16位MD5码(大小写):Hash_MD5_16
③ 计算32位2重MD5码(大小写):Hash_2_MD5_32
④ 计算16位2重MD5码(大小写):Hash_2_MD5_16
⑤ 计算SHA-1码(大小写):Hash_SHA_1
⑥ 计算SHA-256码(大小写):Hash_SHA_256
⑦ 计算SHA-384码(大小写):Hash_SHA_384
⑧ 计算SHA-512码(大小写):Hash_SHA_512
编译后被打包成文件HashTools.dll,其他程序可以在添加引用后对这些函数进行调用
二、类库中各函数代码
1. 类库结构
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace HashTools { public class HashHelper { //各个函数 } }
2. 计算32位MD5码(大小写):Hash_MD5_32
/// <summary> /// 计算32位MD5码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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(); //根据计算得到的Hash码翻译为MD5码 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; } //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
3. 计算16位MD5码(大小写):Hash_MD5_16
/// <summary> /// 计算16位MD5码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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. 计算32位2重MD5码(大小写):Hash_2_MD5_32
/// <summary> /// 计算32位2重MD5码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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); //根据计算得到的Hash码翻译为MD5码 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 = ""; //根据计算得到的Hash码翻译为MD5码 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; } //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
5. 计算16位2重MD5码(大小写):Hash_2_MD5_16
/// <summary> /// 计算16位2重MD5码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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); //根据计算得到的Hash码翻译为MD5码 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 = ""; //根据计算得到的Hash码翻译为MD5码 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); //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
6. 计算SHA-1码(大小写):Hash_SHA_1
/// <summary> /// 计算SHA-1码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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(); //根据计算得到的Hash码翻译为SHA-1码 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; } //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
7. 计算SHA-256码(大小写):Hash_SHA_256
/// <summary> /// 计算SHA-256码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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(); //根据计算得到的Hash码翻译为SHA-1码 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; } //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
8. 计算SHA-384码(大小写):Hash_SHA_384
/// <summary> /// 计算SHA-384码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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(); //根据计算得到的Hash码翻译为SHA-1码 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; } //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
9. 计算SHA-512码(大小写):Hash_SHA_512
/// <summary> /// 计算SHA-512码 /// </summary> /// <param name="word">字符串</param> /// <param name="toUpper">返回哈希值格式 true:英文大写,false:英文小写</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(); //根据计算得到的Hash码翻译为SHA-1码 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; } //根据大小写规则决定返回的字符串 return toUpper ? sHash : sHash.ToLower(); } catch (Exception ex) { throw new Exception(ex.Message); } }
三、函数调用
建立项目ComputeHash,添加对HashTools.dll库的引用。并添加代码:
然后在Main函数中添加下列代码:
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(); }
运行结果如下:
希望本文所述对大家的C#程序设计有所帮助。
您可能感兴趣的文章:
相关文章推荐
- c#调用COM组件
- Mootools 1.2教程 定时器和哈希简介
- C#实现把指定数据写入串口
- C#中抽象方法与虚拟方法的区别
- c#中虚函数的相关使用方法
- C#使用加边法计算行列式的值
- C#实现多线程的同步方法实例分析
- C#中尾递归的使用、优化及编译器优化
- C#通用邮件发送类分享
- C#中this的用法集锦
- C#.NET获取拨号连接的宽带连接方法
- C#实现AddRange为数组添加多个元素的方法
- C#中Equality和Identity浅析
- C#生成饼形图及添加文字说明实例代码
- C#判等对象是否相等的方法汇总
- C#简单的向量用法实例教程
- C#实现基于链表的内存记事本实例
- C#托管堆对象实例包含内容分析
- C#实现按照指定长度在数字前补0方法小结
- C# 通过 inline-asm 解决嵌入x86汇编