import json
from hashlib import sha256
from util.canonicaljson import canonicalize
def canonical_kid(jwk):
"""This function returns the SHA256 hash of a canonical JWK.
Args:
jwk (object): the JWK for which a kid will be generated.
Returns:
string: the unique kid for the given JWK.
"""
return sha256(json.dumps(canonicalize(jwk), separators=(',', ':'))).hexdigest()
