Here is a list of all documented files with brief descriptions:

include
cjose
base64.h	Functions for encoding to and decoding from base64 and base64url
cjose.h	Main include file for CJOSE
error.h	Datatypes and functions for error reporting
header.h	Functions and data structures for interacting with JSON Web Signature (JWS) objects
jwe.h	Functions and data structures for interacting with JSON Web Encryption (JWE) objects
jwk.h	Functions and data structures for interacting with JSON Web Key (JWK) objects
jws.h	Functions and data structures for interacting with JSON Web Signature (JWS) objects
util.h	Utility functions and data structures for CJOSE
version.h	Function to retrieve the version of CJOSE