1

我是一名学生，我是编程新手。这是我尝试编写的第一个 C# 程序。该程序应该读取带有明文的文本文件，然后输出带有 MD5 和 SHA-1 哈希的文本文件。据我所知，该程序可以运行，但是我的程序创建的哈希与在线哈希生成器生成的哈希不匹配。据我所知，如果输入单词相同，哈希应该匹配。我的代码有什么明显的错误会导致这种情况吗？

using System;
using System.Text;
using System.IO;
using System.Security.Cryptography;

namespace CreateHash
{
class Program
{
    const string INPUTFILE = "C:\\ClearTextPasswords.txt";
    const string OUTPUTFILEMD5 = "C:\\EncryptedMD5Passwords.txt";
    const string OUTPUTFILESHA1 = "C:\\EncryptedSHA1Passwords.txt";

    static void Main(string[] args)
    {
        string input;
        int counter = 0;

        DeleteWriteFile();

        StreamReader readFile = new StreamReader(INPUTFILE);

        while ((input = readFile.ReadLine()) != null)
        {
            if(AppendFile(input))
                counter++;
        }

        readFile.Close();

        Console.WriteLine("\nSuccessfully wrote {0} encrypted password(s) to: \n{1} and\n{2} files.\n\nPress any key to exit...", counter.ToString(), OUTPUTFILEMD5, OUTPUTFILESHA1);
        Console.ReadKey();
    }

    static void DeleteWriteFile()
    {
        //Example of try/catch block
        try
        {
            System.IO.File.Delete(OUTPUTFILEMD5);
        }
        catch (Exception ex)
        {
            Console.WriteLine("There was an error deleting the MD5 Output file: " + ex.Message);
        }

        try
        {
            System.IO.File.Delete(OUTPUTFILESHA1);
        }
        catch (Exception ex)
        {
            Console.WriteLine("There was an error deleting the MD5 Output file: " + ex.Message);
        }
    }

    static bool AppendFile(string str)
    {
        int x = 0;
        int y = 0;
        bool result = false;

        StreamWriter writeFile1;
        StreamWriter writeFile2;

        HashToolkit hashToolkit = new HashToolkit();

        //Example of try/catch/finally block
        try
        {
            writeFile1 = new StreamWriter(OUTPUTFILEMD5, true);
            writeFile1.WriteLine(hashToolkit.GetMd5(str));
            writeFile1.Close();
            x = 1;
        }
        catch (Exception ex)
        {
            Console.WriteLine("There was an error writing to the MD5 Output file: " + ex.Message);
        }
        finally
        {
            writeFile1 = null;
        }

        try
        {
            writeFile2 = new StreamWriter(OUTPUTFILESHA1, true);
            writeFile2.WriteLine(hashToolkit.GetSha1(str));
            writeFile2.Close();
            y = 1;
        }
        catch (Exception ex)
        {
            Console.WriteLine("There was an error writing to the SHA1 Output file: " + ex.Message);
        }
        finally
        {
            writeFile2 = null;
        }

        if (x * y != 0)
            result = true;

        return result;
    }
}

public class HashToolkit
{
    public HashToolkit()
    {
    }

    public string GetMd5(string str)
    {
        MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
        string input = string.Empty;

        byte[] hashedData = md5.ComputeHash(Encoding.Unicode.GetBytes(str));

        foreach (byte b in hashedData)
        {
            input += String.Format("{0,2:X2}", b);
        }
        return input;
    }

    public string GetSha1(string str)
    {
        SHA1 sha = new SHA1CryptoServiceProvider();
        string input = string.Empty;

        byte[] hashedData = sha.ComputeHash(Encoding.Unicode.GetBytes(str));

        foreach (byte b in hashedData)
        {
            input += String.Format("{0,2:X2}", b);
        }
        return input;
    }
}
}

任何帮助将非常感激。感谢您的时间。

4

1 回答 1

3

那是因为你不能散列字符串，你只能散列字节。因此，您需要先转换为字节。你正在为此使用 UTF16。在线工具可能使用 UTF8 或一些 ASCII 样式的编码。找出它使用并使用它。

于 2012-10-28T19:41:49.860 回答