Support for RS512 algorithm

[rbkumar88]

Hi,

When I tried to decode a token signed using RS512, I get the following error.

terminate called after throwing an instance of 'std::runtime_error'
  what():  Invalid input
Abort trap: 6

Does it support that.? I could see this library is marked as RS512 supported in jwt.io

[Thalhammer]

Yes RS512 is supported.

The exception you are seeing does not look like one thrown by jwt-cpp. If you can it might help if you share some source code.
I added same test cases for rs512 to guide you with implementation.
Also you can try your token here to make sure it is actually a valid token.

[Thalhammer]

I took a look at it today and this exception gets thrown when there is invalid base64 input (a jwt token is basically a series of base64 encoded JSON strings).
To be precise the error is thrown in the following cases:

• There are more than 2 padding characters
• The number of characters (including fill) does not add up to multiples of 4
• The base64 string contains invalid characters

Personally, I suspect your error is caused by the last one, but I can only be sure if I get a sample token.
Make sure your token only contains

• lowercase ASCII chars
• uppercase ASCII chars
• numbers
• underscore and minus symbols
• (and exactly 2 dots separating the three parts)

[Thalhammer]

Is this still relevant ?

[Thalhammer]

Closing due to inactivity.