I am working with the Facebook API and Ruby on Rails and I'm trying to parse the JSON that comes back. The problem I'm running into is that Facebook base64URL encodes their data. There is no built-in base64URL decode for Ruby.
For the difference between a base64 encoded and base64URL encoded, see wikipedia.
How do I decode this using Ruby/Rails?
Because some people have difficulty reading - base64 URL is DIFFERENT than base64
I have an encoded PDF in base64.
Dim pdf As String = ""pdf = x.SIOrderPDF(apiKey, UserHash, tablicaZlecen, "pl").pdf 'this method returns a string pdf encoded in base64
Here is my question, how to decode it?
This question is an exact duplicate of:
So I would like to replace every A in the base64 to ].
Here is my code
Would I add string.Replace("A", "]") or something like it somewhere in this class?
I'm using C# primarily to do this .NET 2.0. I have a source generator for a program that produces code where the .exe has been encoded with base64 and then decoded in the main class and run.
My question is how do you change it so
] (base64 alphabet changing). I want to replace every
A in the base64 string, and then in the main module where it calls the class to decode base64 and replace
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
"An additional pad character is allocated which may be used to force the encoded output into an integer multiple of 4 characters (or equivalently when the unencoded binary text is not a multiple of 3 bytes) ; these padding characters must then be discarded when decoding but still allow the calculation of the effective length of the unencoded text, when its input binary length would not be not a multiple of 3 bytes (the last non-pad character is normally encoded so that the last 6-bit block it represents will be zero-padded on its least significant bits, at most two pad characters may occur at the end of the encoded stream)."
I wrote a program which could base64 encode any string and decode any base64 encoded string. What problem does padding solves?