gistfile1.txt

import cbor2
from cose.algorithms import Es256
from cose.headers import Algorithm, KID
from cose.keys.keyparam import EC2KP, EC2KpCurve, EC2KpD, EC2KpX, EC2KpY, KpKeyOps, KpKty
from cose.keys.keytype import KtyEC2
from cose.messages import Sign1Message
from cose.keys import CoseKey, keyops, curves

from binascii import unhexlify, hexlify
from pprint import pprint

import zlib
import base45
import qrcode
import json

priv_key = {
    KpKty: KtyEC2,
    EC2KpCurve: curves.P256,
    KpKeyOps: [keyops.SignOp, keyops.VerifyOp],
    EC2KpX: unhexlify(b'fa5e3ee7ccf4b52056fba3f275a3c3a8867c9ffcccfac20f59e9db49bfccf26e'),
    EC2KpY: unhexlify(b'6b278200cd45d22127525e9c7272b67b722f029e40ec55547886a1ae0ffde966'),
    EC2KpD: unhexlify(b'<private redacted>')
}

with open("response.json") as jsonFile:
    json_data = json.load(jsonFile)
    jsonFile.close()

out_obj = {
    1: "AU",
    "4": json_data['immunisationRecordData']['immunisationRecordMetadata']['dateValidTo'],
    "6": json_data['immunisationRecordData']['immunisationRecordMetadata']['dateGenerated'],
    "-260": {
        "1": {
            "dob": json_data['immunisationRecordData']['individualDetails']['dateOfBirth'],
            "nam": {
                "fn": json_data['immunisationRecordData']['individualDetails']['lastName'],
                "gn": "{} {}".format(json_data['immunisationRecordData']['individualDetails']['firstName'], json_data['immunisationRecordData']['individualDetails']['initial']).strip(),
                "fnt": json_data['immunisationRecordData']['individualDetails']['lastName'].upper(),
                "gnt": "{} {}".format(json_data['immunisationRecordData']['individualDetails']['firstName'], json_data['immunisationRecordData']['individualDetails']['initial']).strip().upper()
            },
            "ver": "1.3.0"
        },
    }
}
out_obj['-260']["1"]["v"] = []
for k, v in enumerate(json_data['immunisationRecordData']['immunisationStatus']['vaccineInfo']):
    pprint(k)
    pprint(v)
    entry = {
        "tg": "840539006", # COVID-19
        "co": "AU", # State where administered
        "is": "Australian Department of Health", # Certificate issuer
        "ci": json_data['immunisationRecordData']['immunisationRecordMetadata']['immunisationRecordId']
    }
    if (v['vaccineBrand'] == 'Pfizer Comirnaty'):
        entry["vp"] = "1119349007" # a SARS-CoV-2 mRNA vaccine
        entry["mp"] = "EU/1/20/1528" # Comirnaty
        entry["ma"] = "ORG-100030215" # Biontech Manufacturing GmbH (is this what we get?)
        entry["dn"] = k # number in series of doses
        entry["sd"] = len(json_data['immunisationRecordData']['immunisationStatus']['vaccineInfo']) # overall number in series
        entry["dt"] = v['immunisationDate']
        out_obj['-260']["1"]["v"].append(entry)
    
pay = cbor2.dumps(out_obj)
msg = Sign1Message(phdr = {Algorithm: Es256, KID: b'18abc89f54946a9e'}, payload = pay)
cose_key = CoseKey.from_dict(priv_key)
msg.key = cose_key
encoded = msg.encode()
compressed = zlib.compress(encoded)
string = "HC1:{}".format(base45.b45encode(compressed).decode())
qrcode.make(string).save("some_file.png")