Simon Willison’s Weblog

Writing the code to sign data with a private key and verify it with a public key would have been easier to get correct than correctly invoking the JWT library. In fact, the iOS app (which gets this right) doesn’t use a JWT library at all, but manages to verify using a public key in fewer lines of code than the Android app takes to incorrectly use a JWT library!

— James 'zofrex' Sanderson