Error in passwordDecodeInvalid length for a Base-64 char array or string.

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I get this error everytime i try to login "Error in passwordDecodeInvalid length for a Base-64 char array or string."

Here is my class

C#

public string Encrypt(string password)
       {
           try
           {
               byte[] encPassword = new byte[password.Length];
               encPassword = System.Text.Encoding.UTF8.GetBytes(password);

               string encodedPassword = Convert.ToBase64String(encPassword);
               return encodedPassword;
           }
           catch (Exception ex)
           {
               throw new Exception("Error in PasswordEncode" + ex.Message);

           }

       }
       public string Decrypt(string password)
       {
           try
           {
               System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
               System.Text.Decoder passDecode = encoder.GetDecoder();
               byte[] decodedPassword = Convert.FromBase64String(password);
               int charCount = passDecode.GetCharCount(decodedPassword, 0, decodedPassword.Length);
               char[] decodedChar = new char[charCount];
               passDecode.GetChars(decodedPassword, 0, decodedPassword.Length, decodedChar, 0);
               string result = new string(decodedChar);
               return result;

           }
           catch (Exception ex)
           {
               throw new Exception("Error in passwordDecode" + ex.Message);
           }
       }

Posted 19-Aug-13 0:30am

210032278

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Comments

Maarten Kools 19-Aug-13 6:34am

Check the parameter you're passing to your Decrypt method, because Decrypt(Encrypt("mypassword")) works perfectly fine. (Possibly you'll want to call Encrypt instead?)

Naz_Firdouse 19-Aug-13 6:36am

this may help you
http://stackoverflow.com/questions/2925729/invalid-length-for-a-base-64-char-array[^]

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Member 9549287 · Answer 1 · 2013-08-19T07:08:00

During decoding, you could first get the string equivalent of the base64 string, then read the utf8 bytes of the string then decode it and convert it back to string. Something like:

C#

...

using System.Text;

...

public string Decrypt(string password)
{
     try
     {
        string temp = Convert.FromBase64String(password);

        byte[] decryped = Encoding.UTF8.GetBytes(temp) 

        return (string)decrypted;
     }
     catch { ... }
     
     ...
}