(CkPython) Load JWK into PublicKey Object

Demonstrates how to load a Java Web Key (JWK) into a Chilkat public key object.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux

import sys
import chilkat

success = False

# Imagine we have this JWK:

# {
# "kty":"RSA",
# "kid":"bilbo.baggins@hobbiton.example",
# "use":"sig",
# "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
# "e":"65537"
# }
# 

sbJwk = chilkat.CkStringBuilder()
success = sbJwk.LoadFile("qa_data/jwk/simple_jwk_rsa.json","utf-8")
if (success != True):
    print("Failed to load simple JWK file.")
    sys.exit()

# Loading it into a Chilkat public key object is easy:
pubkey = chilkat.CkPublicKey()
success = pubkey.LoadFromString(sbJwk.getAsString())
if (success == False):
    print(pubkey.lastErrorText())
    sys.exit()

print("Simple JWK loaded into public key object.")

# ----------------------------------------------------------------------------------------------------------
# Demonstrate how to load a JWK that is contained within JSON into a public key object.

# {
#   "alg":"RS256",
#   "jwk":  {
#           "kty":"RSA",
#           "kid":"bilbo.baggins@hobbiton.example",
#           "use":"sig",
#           "n":"26381066103266289976070039679240841999340706859156341823971393693544846472963839705790075117105560154606562987481050889935247188300178764426769543782451174831475924241862817098997865881169498995546309260357488285676768114714548754913374731868063116787903918383610614912211576698081222844057810710088656983077876282582286966085572172471849443305250452393766960762340311496052418952315081937000716222751229644449475751932222180738210988190709824209639002026650048655399108647971010890335494074025258268035713167380057822555485524738518699437692145859633592396626258745090144803752145540471688039673495588314804430463791",
#           "e":"65537"
#           }
# }

sbJwk2 = chilkat.CkStringBuilder()
success = sbJwk2.LoadFile("qa_data/jwk/contained_jwk_rsa.json","utf-8")
if (success == False):
    print(sbJwk2.lastErrorText())
    sys.exit()

# Get the "jwk" part of the JSON..
json = chilkat.CkJsonObject()
json.Load(sbJwk2.getAsString())

jsonJwk = chilkat.CkJsonObject()
success = json.ObjectOf2("jwk",jsonJwk)
if (success == False):
    print(json.lastErrorText())
    sys.exit()

pubkey2 = chilkat.CkPublicKey()
success = pubkey2.LoadFromString(jsonJwk.emit())
if (success == False):
    print(pubkey2.lastErrorText())
    sys.exit()

print("Contained JWK loaded into public key object.")