C#获取SHA1和MD5值的实现
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Security.Cryptography;
using System.IO;
namespace WFSHA1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
protected static string sha1hash = "";
protected static string md5hash = "";
protected static string pathName = "";
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.ShowDialog();
pathName = ofd.FileName;
WaitCallback wc = new WaitCallback(getResult);
ThreadPool.QueueUserWorkItem(wc);
}
/// <summary>
/// 计算结果
/// </summary>
/// <param name="pathName"></param>
/// <returns></returns>
public void getResult(object obj)
{
try
{
if (pathName != "" && System.IO.File.Exists(pathName))
{
FileStream fs = new FileStream(pathName, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite);
lock (sha1hash)
{
sha1hash = getSHA1(fs);
}
lock (md5hash)
{
md5hash = getMD5(fs);
}
fs.Close();
MessageBox.Show("计算完毕，请查看结果！");
}
}
catch
{
MessageBox.Show("出错了!");
}
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text = sha1hash;
textBox2.Text = md5hash;
}
/// <summary>
/// 计算md5
/// </summary>
/// <returns></returns>
public string getMD5(FileStream oFileStream)
{
MD5 md5 = MD5.Create();
byte[] result = md5.ComputeHash(oFileStream);
string sResult = BitConverter.ToString(result).Replace("-","");
return sResult;
}
/// <summary>
/// 计算sha1
/// </summary>
/// <returns></returns>
public string getSHA1(FileStream oFileStream)
{
string strResult = "";
string strHashData = "";
byte[] arrbytHashValue;
System.Security.Cryptography.SHA1CryptoServiceProvider oSHA1Hasher = new System.Security.Cryptography.SHA1CryptoServiceProvider();
arrbytHashValue = oSHA1Hasher.ComputeHash(oFileStream);
strHashData = System.BitConverter.ToString(arrbytHashValue);
strHashData = strHashData.Replace("-", "");
strResult = strHashData;
return strResult;
}
}
}
参考网上的实现，弄了个获取sha1 和 MD5值的小工具(待验证的文件理论上无大小限制)。
