Support for jkt (JSON Web Key (JWK) Thumbprint)

[damooo]

RFC 7638 specifies JSON Web Key (JWK) Thumbprint in jose stack. It specifies a method for computing a hash value over a jwk. It will e useful for comparing two different jwks. It is also mandated y dpop standard.

[damooo]

FWIW canonical_json provides simple function to serialize to json compatible with above rfc (canonical_json original spec mentions so).