Method to parse untrusted footer? #46
Description
Is your feature request related to a problem? Please describe.
The rusty_paseto::core::Footer docs and the PASETO spec note that the footer can be useful for key rotation. This requires reading it before decrypting/verifying the token. However, I can't seem to find any method for parsing out the footer from a token? In fact, AFAICT it seems like the token parser requires the user to know what the footer is if one is present?
Describe the solution you'd like
A new method for parsing an untrusted footer.
Describe alternatives you've considered
- Manually implementing this parsing outside of
rusty_paseto. - Passing information for key rotation separate from the token.