在将表单发送到后端之前，如何将密码字符串转换为Base64字符串？

Question

我有一个样本注册表单，它在大多数情况下都能正常工作，但是当我尝试使用密码“U8 $＆＃6G＃CBj”注册新用户时，我得到一个例外“从一个潜在危险的Request.Form值被检测到客户端“我的想法是在将密码发送到后端之前将密码转换为Base64格式，然后在后端将密码转换回来。 我该怎么做？

@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
     {
        @Html.AntiForgeryToken()
        <h4>Use a local account to log in.</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
           @Html.LabelFor(m => m.Email, new { @class = "col-md-2 control-label" })
           <div class="col-md-10">
              @Html.TextBoxFor(m => m.Email, new { @class = "form-control" })
              @Html.ValidationMessageFor(m => m.Email, "", new { @class = "text-danger" })
           </div>
        </div>
        <div class="form-group">
           @Html.LabelFor(m => m.Password, new { @class = "col-md-2 control-label" })
           <div class="col-md-10">
              @Html.PasswordFor(m => m.Password, new { @class = "form-control" })
              @Html.ValidationMessageFor(m => m.Password, "", new { @class = "text-danger" })
           </div>
        </div>
        <div class="form-group">
           <div class="col-md-offset-2 col-md-10">
              <div class="checkbox">
                 @Html.CheckBoxFor(m => m.RememberMe)
                 @Html.LabelFor(m => m.RememberMe)
              </div>
           </div>
        </div>
        <div class="form-group">
           <div class="col-md-offset-2 col-md-10">
              <input type="submit" value="Log in" class="btn btn-default" />
           </div>
        </div>
        <p>
           @Html.ActionLink("Register as a new user", "Register")
        </p>
        @* Enable this once you have account confirmation enabled for password reset functionality *@
        <p>
           @Html.ActionLink("Forgot your password?", "ForgotPassword")
        </p>
     }

Answer 1

在Alexei Levenkov的前端部分和Vidhyadhar Galande的后端的帮助下我解决了我的问题，这里是代码：on View to form我在提交事件上添加了这个javascript函数

function encode(){
        $('#Password').val(btoa($('#Password').val()));
        $('#ConfirmPassword').val(btoa($('#ConfirmPassword').val()));
    }

并在后端解码字符串：

private string DecodeFromBase64(string inputBas64)
{
    var base64EncodedBytesPassword = System.Convert.FromBase64String(model.Password);
    string password = System.Text.Encoding.UTF8.GetString(base64EncodedBytesPassword);
    return password;
}

Answer 2

尝试这个

1）base64（编码/解码）

 public static string base64Encode(string sData) // Encode
 {
   try
    {
       byte[] encData_byte = new byte[sData.Length];
       encData_byte = System.Text.Encoding.UTF8.GetBytes(sData);
       string encodedData = Convert.ToBase64String(encData_byte);
       return encodedData;
    }
   catch (Exception ex)
   {
       throw new Exception("Error in base64Encode" + ex.Message);
   }
 }

public static string base64Decode(string sData) //Decode
 {
    try
    {
      var encoder = new System.Text.UTF8Encoding();
      System.Text.Decoder utf8Decode = encoder.GetDecoder();
      byte[] todecodeByte = Convert.FromBase64String(sData);
      int charCount = utf8Decode.GetCharCount(todecodeByte, 0, todecodeByte.Length);
      [] decodedChar = new char[charCount];
      utf8Decode.GetChars(todecodeByte, 0, todecodeByte.Length, decodedChar, 0);
      string result = new String(decodedChar);
      return result;
   }
  catch (Exception ex)
   {
      throw new Exception("Error in base64Decode" + ex.Message);
    }
}

2）EncodePasswordMd5

 public static string EncodePassword(string pass, string salt) //encrypt password
   {
      byte[] bytes = Encoding.Unicode.GetBytes(pass);
      byte[] src = Encoding.Unicode.GetBytes(salt);
      byte[] dst = new byte[src.Length + bytes.Length];
      System.Buffer.BlockCopy(src, 0, dst, 0, src.Length);
      System.Buffer.BlockCopy(bytes, 0, dst, src.Length, bytes.Length);
      HashAlgorithm algorithm = HashAlgorithm.Create("SHA1");
      byte[] inArray = algorithm.ComputeHash(dst);
      //return Convert.ToBase64String(inArray);
      return EncodePasswordMd5(Convert.ToBase64String(inArray));
   }
  public static string EncodePasswordMd5(string pass) //Encrypt using MD5
   {
      Byte[] originalBytes;
      Byte[] encodedBytes;
      MD5 md5;
      //Instantiate MD5CryptoServiceProvider, get bytes for original password and compute hash (encoded password)
      md5 = new MD5CryptoServiceProvider();
      originalBytes = ASCIIEncoding.Default.GetBytes(pass);
      encodedBytes = md5.ComputeHash(originalBytes);
      //Convert encoded bytes back to a 'readable' string
      return BitConverter.ToString(encodedBytes);
  }

@Using Namespace

  using System;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;