Error in decoding method

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1.82/5 (3 votes)

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This is the my decoding method:

C#

public static string DecodeFrom64(string m_enc)
   {
       byte[] encodedDataAsBytes =
       System.Convert.FromBase64String(m_enc);
       string returnValue =
       System.Text.Encoding.UTF8.GetString(encodedDataAsBytes);
       return returnValue;
   }

The error is:
The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters.

Why i am getting this error any one pls help me...

Posted 25-May-12 23:24pm

shwetha1

Updated 20-Jun-17 20:01pm

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OriginalGriff · Accepted Answer · 2012-05-25T23:38:00

The error message is pretty specific: "as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters"

So, I would guess that you either haven't converted your string to Base 64 correctly, or you have corrupted it since. Without knowing more about you application, we can't say much more.

Look at the string when you have first converted it. Does it look like the one you are trying to convert back? If not, how not? And Why not?

BTW: You do realize that Base64 is not an encryption system? That if you are trying to use it as such, it is about as secure as writing "DO NOT READ" on the outside of your personal diary?