JSON Web Tokens (JWTs) are an open, industry standard method for representing claims securely between two parties. There are numerous implementations for JWT verification but it looks like each author is testing his implementation on his own.
Can you recommend a tool or library for testing or particularly fuzz-testing JWT validator?
I would prefer to have a tool or library in Java, Ruby or Python. But many fuzzers I've heard off are GUI tools or command-line tools and I don't care much which language they are in. I would be satisfied if there's at least one.