61 lines
2.0 KiB
C#
61 lines
2.0 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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namespace SGModule.Common.Helper {
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public class MD5Helper {
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public static string GetFileMD5(string file) {
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try {
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var fs = new FileStream(file, FileMode.Open);
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MD5 md5 = new MD5CryptoServiceProvider();
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var retVal = md5.ComputeHash(fs);
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fs.Close();
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var sb = new StringBuilder();
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foreach (var str in retVal) {
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sb.Append(str.ToString("X2"));
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}
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return sb.ToString();
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}
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catch (Exception ex) {
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throw new Exception("GetFileMD5 fail error: " + ex.Message);
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}
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}
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/// <summary>
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/// 获取字符串的MD5值
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/// </summary>
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public static string GetStringMD5(string str) {
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if (string.IsNullOrEmpty(str)) {
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return null;
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}
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MD5 md5 = new MD5CryptoServiceProvider();
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var bytResult = md5.ComputeHash(Encoding.UTF8.GetBytes(str));
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var strResult = BitConverter.ToString(bytResult);
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strResult = strResult.Replace("-", string.Empty);
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return strResult;
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}
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public static string MD5String1(string text) {
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var buffer = Encoding.Default.GetBytes(text);
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var check = new MD5CryptoServiceProvider();
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var somme = check.ComputeHash(buffer);
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var result = new StringBuilder();
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foreach (var a in somme) {
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var value = a.ToString("X");
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if (a < 16) {
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result.Append(0);
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result.Append(value);
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}
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else {
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result.Append(value);
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}
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}
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return result.ToString().ToLower();
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}
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}
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}
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