71 lines
1.9 KiB
C#
71 lines
1.9 KiB
C#
using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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public class EncryptMD5
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{
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/// <summary>
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/// 获取字符串MD5值
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/// </summary>
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/// <param name="sText"></param>
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/// <param name="encoding">编码方式 utf8</param>
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/// <param name="uppercase">true 大写；false 小写</param>
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/// <returns></returns>
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public static string Encrypt(string sText, Encoding encoding, bool uppercase = false)
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{
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byte[] buffer = encoding.GetBytes(sText);
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string s = Encrypt(buffer);
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if (!uppercase)
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s = s.ToLower();
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return s;
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}
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/// <summary>
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/// 获取字符串MD5值
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/// </summary>
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/// <param name="buffer"></param>
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/// <returns></returns>
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public static string Encrypt(byte[] buffer)
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{
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//使用MD5这个抽象类的Creat()方法创建一个虚拟的MD5类的对象。
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using (MD5 md5 = MD5.Create())
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{
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//使用MD5实例的ComputerHash()方法处理字节数组。
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byte[] bufferNew = md5.ComputeHash(buffer);
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string s = BitConverter.ToString(bufferNew, 0, bufferNew.Length);
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return s.Replace("-", "");
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}
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}
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/// <summary>
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/// 获取流MD5值
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/// </summary>
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/// <param name="inputStream"></param>
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/// <returns></returns>
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public static string Encrypt(Stream inputStream)
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{
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using (MD5 mi = MD5.Create())
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{
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//开始加密
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byte[] bufferNew = mi.ComputeHash(inputStream);
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string s = BitConverter.ToString(bufferNew, 0, bufferNew.Length);
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return s.Replace("-", "");
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}
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}
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/// <summary>
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/// 获取文件MD5值
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/// </summary>
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/// <param name="filename"></param>
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/// <returns></returns>
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public static string EncryptFile(string filename)
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{
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using (FileStream fs = new FileStream(filename, FileMode.Open))
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{
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return Encrypt(fs);
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}
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}
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}
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