Xclaim is a command line tool to encode and decode CWT, EAT, UCCS and at some point JWT. It is designed as a cross-bar switch to be able to transform any one format token into another. Here's a list of formats:

• CWT/EAT -- input and output supported
• UCCS -- input and output supported
• UNIX command line -- input only, an easy way to create tokens
• JSON -- output only, an easy-to-read text format
• JWT -- planned for future, input and output

Since the CWT/EAT implementation can sign tokens, this works easily as a tool to create signed tokens from the command line or to turn a UCCS into a signed token and eventually to convert and re-sign a JWT token. Similarly, it can be used to verify a CWT/EAT and output the claims in an easy-to-ready JSON format, as an unsigned UCCS and eventually to re-sign as a JWT. As of now CWT/EAT encryption is not supported, but when it is, it will work the same way.

The following libraries are used to implement this:

• QCBOR for CBOR encoding and decoding
• t_cose for COSE signing and verification
• ctoken for EAT/CWT encoding and decoding
• OpenSSL or Mbed TLS crypto libraries

Code State

Lots of code is working, but not tested and not very well bundled up into an easy-to-install package.