Greenpass Scripts

downloadListsToJSON.py

import json
import zlib
import base64
import cbor2 # type: ignore
import cose.algorithms # type: ignore
import cose.keys.curves # type: ignore
import cose.keys.keytype # type: ignore
import requests

def valueSetFormatter(valuesets):
    for x in valuesets["v"]:
        x["v"] = json.loads(x["v"])
    return valuesets

def rulesFormatter(rules):
    for x in rules["r"]:
        x["r"] = json.loads(x["r"])
    return rules

def trustlistFormatter(trustlist):
    for x in trustlist["c"]:
        x["i"] = base64.b64encode(x["i"]).decode('utf-8')
        x["c"] = base64.b64encode(x["c"]).decode('utf-8')
    return trustlist

items = [ 
    { 'name': "trustlist", 'formatter': trustlistFormatter},
    { 'name': "rules", 'formatter': rulesFormatter},
    { 'name': "valuesets", 'formatter': valueSetFormatter},
]

for i in items:
    response = requests.get("https://dgc-trust.qr.gv.at/" + i['name'])
    if not response.ok:
        print("Download failed: status code {}\n{}".format(response.status_code, response.text))
        exit

    cbor = cbor2.loads(response.content)

    obj = i['formatter'](cbor)

    with open(i['name'] + ".json", "w") as outfile:
        json.dump(obj, outfile, indent=4)

readGreenpassFromImage.py

import qrtools
import sys
import cbor2
import base45
import zlib
import json
from cose.messages import CoseMessage, Sign1Message # type: ignore

if len(sys.argv) != 2:
    print("Usage: {} <image>".format(sys.argv[0]))
    exit(1)

qr = qrtools.QR()
qr.decode(sys.argv[1])

compressed = base45.b45decode(qr.data[4:])
cose = zlib.decompress(compressed)

msg = CoseMessage.decode(cose)

obj = cbor2.loads(msg.payload)

print(json.dumps(obj, indent=4))

requirements.txt

cose
base45
cbor2
qrtools