jwt command-line tool

This is a simple tool to sign, verify and show JSON Web Tokens from the command line.

The following will create and sign a token, then verify it and output the original claims:

 echo {\"foo\":\"bar\"} | ./jwt -key ../../test/sample_key -alg RS256 -sign - | ./jwt -key ../../test/sample_key.pub -alg RS256 -verify -

To simply display a token, use:

echo $JWT | ./jwt -show -