def test_decode_encoded(self):
random.seed(42)
for i in range(142):
binary = bytes([
random.randint(0, 255) for _ in range(random.randint(0, 142))
])
self.assertEqual(binary, b45decode(b45encode(binary)))
def verify_and_decode(self, eudcc: bytes) -> Union[Dict[int, Any], bytes]:
if eudcc.startswith(b"HC1:"):
# Decode Base45 data.
eudcc = b45decode(eudcc[4:])
# Decompress with zlib.
eudcc = zlib.decompress(eudcc)
# Verify and decode CWT.
return cwt.decode(eudcc, keys=self._dscs)
def decrypt_contact(scan):
# Base45 decode + RSA OAEP SHA256 decrypt
# MurmurHash3 to compute ID for contact details
msg = b45decode(scan)
contact = cipher.decrypt(msg)
# print('\tBase45: {}\n\tContact: {}'.format(scan, contact))
h = mmh3.hash(contact)
return h, contact.decode()
def decode_and_decompress(data: bytes) -> bytes:
decoded_data = base45.b45decode(data)
decompressed_data = zlib.decompress(decoded_data)
logger.debug(
"Uncompressed data: %d bytes, %s",
len(decompressed_data),
binascii.hexlify(decompressed_data).decode(),
)
return decompressed_data
def base45_d(txt):
import base45
return base45.b45decode(txt)
import base64
import base45
import zlib
import cbor2
b45data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
# message_bytes = base64.b64decode(base64_bytes)
# message = message_bytes.decode('ascii')
# print(message)
zlibdata = base45.b45decode(b45data)
cbordata = zlib.decompress(zlibdata)
decoded = cbor2.loads(cbordata)
print(cbor2.loads(decoded.value[2]))
def eventFilter(self, obj, event):
var = 2
today = datetime.today().date() # getting today's date
def validity(j_whole, var, date_from, vall):
# Forming the date to check by adding the days from the .ini file to the date from the cert
if var == 1:
Date = datetime.fromtimestamp(j_whole['4']).date()
elif var != 1:
Date = date_from + relativedelta(months=vall)
# Comparing the date of expire against today
if today < Date: # Valid cert
os.system(
'@echo off && chcp 65001>nul && start /b /wait MessageBox.exe "The certificate is valid!" '
'"Information">nul')
else: # Invalid cert
os.system(
'@echo off && chcp 65001>nul && start /b /wait MessageBox.exe "The certificate is invalid!" '
'"Attention!" /i:E>nul')
if event.type() == QEvent.KeyPress:
if event.key() == Qt.Key_Escape:
self.close()
"""
if event.key() == Qt.Key_Enter:
# print("Enter is pressed!")
payload = self.lineEdit.text()
payload = payload[4:]
try:
decoded = base45.b45decode(payload)
except:
exception()
reset() and sys.exit()
# decompress using zlib
decompressed = zlib.decompress(decoded)
# decode COSE message (no signature verification done)
cose = CoseMessage.decode(decompressed)
# decode the CBOR encoded payload converting the information to readable json struct
whole = (
json.dumps(cbor2.loads(cose.payload), ensure_ascii=False, indent=2, sort_keys=True, default=str))
j_whole = json.loads(whole)
dick = j_whole['-260']['1'] # the dic with the needed information for the funcs
date_from = datetime.fromtimestamp(j_whole['6']).date() # date issued/valid from
self.placeholder_native_name.setText()
"""
if event.key() == Qt.Key_Return:
print("Return is pressed!")
payload = self.lineEdit.text()
payload = payload[4:]
try:
decoded = base45.b45decode(payload)
except:
exception()
reset() and sys.exit()
# decompress using zlib
decompressed = zlib.decompress(decoded)
# decode COSE message (no signature verification done)
cose = CoseMessage.decode(decompressed)
# decode the CBOR encoded payload converting the information to readable json struct
whole = (json.dumps(cbor2.loads(cose.payload),
ensure_ascii=False,
indent=2,
sort_keys=True,
default=str))
j_whole = json.loads(whole)
dick = j_whole['-260'][
'1'] # the dic with the needed information for the funcs
date_from = datetime.fromtimestamp(
j_whole['6']).date() # date issued/valid from
for k, v in dick.items():
if k == "r": # recovery
if v is None: # if empty will continue to the next sub-dic
continue
if j_whole[
'1'] == "BG": # In BG this cert is 365 days, not 180. For now...
val = open("val_rec_bg.ini",
"r") # Opens it in read mode
vall = list(val) # Converting data to list
vall = int(
vall[0]
) # Taking the first (and only) item and convert it to int
val.close() # Closes the file
elif j_whole['1'] != "BG":
val = open("val_rec.ini",
"r") # Opens it in read mode
vall = list(val) # Converting data to list
vall = int(
vall[0]
) # Taking the first (and only) item and convert it to int
val.close() # Closes the file
self.placeholder_native_name.setText(
str(j_whole['-260']['1']['nam']['gn']) + " " +
str(j_whole['-260']['1']['nam']['fn']))
self.placeholder_en_name.setText(
str(j_whole['-260']['1']['nam']['gnt']) + " " +
str(j_whole['-260']['1']['nam']['fnt']))
self.placeholder_date_issued.setText(
str(datetime.fromtimestamp(j_whole['6']).date()))
self.placeholder_valid_until.setText(
str(datetime.fromtimestamp(j_whole['4']).date()))
self.placeholder_cert_id.setText(
str(j_whole['-260']['1']['r'][0]['ci']))
for K, V in CO.items():
if j_whole['1'] == K:
c = V
elif len(j_whole['1']) > 2:
c = j_whole['1']
self.placeholder_CO.setText(str(c))
self.cert_type.setText("Recovery certificate")
break
elif k == "v": # vaccine
if v is None:
continue
val = open("val_vac.ini", "r")
vall = list(val)
vall = int(vall[0])
val.close()
self.placeholder_native_name.setText(
str(j_whole['-260']['1']['nam']['gn']) + " " +
str(j_whole['-260']['1']['nam']['fn']))
self.placeholder_en_name.setText(
str(j_whole['-260']['1']['nam']['gnt']) + " " +
str(j_whole['-260']['1']['nam']['fnt']))
self.placeholder_date_issued.setText(
str(datetime.fromtimestamp(j_whole['6']).date()))
self.placeholder_valid_until.setText(
str(datetime.fromtimestamp(j_whole['4']).date()))
self.placeholder_cert_id.setText(
str(j_whole['-260']['1']['v'][0]['ci']))
for K, V in CO.items():
if j_whole['1'] == K:
c = V
elif len(j_whole['1']) > 2:
c = j_whole['1']
self.placeholder_CO.setText(str(c))
self.cert_type.setText("Vaccination certificate")
break
elif k == "t": # test cert
if v is None:
continue
var = 1
vall = "pft"
self.placeholder_native_name.setText(
str(j_whole['-260']['1']['nam']['gn']) + " " +
str(j_whole['-260']['1']['nam']['fn']))
self.placeholder_en_name.setText(
str(j_whole['-260']['1']['nam']['gnt']) + " " +
str(j_whole['-260']['1']['nam']['fnt']))
self.placeholder_date_issued.setText(
str(datetime.fromtimestamp(j_whole['6']).date()))
self.placeholder_valid_until.setText(
str(datetime.fromtimestamp(j_whole['4']).date()))
self.placeholder_cert_id.setText(
str(j_whole['-260']['1']['t'][0]['ci']))
for K, V in CO.items():
if j_whole['1'] == K:
c = V
elif len(j_whole['1']) > 2:
c = j_whole['1']
self.placeholder_CO.setText(str(c))
self.cert_type.setText("Test certificate")
validity(j_whole, var, date_from, vall)
return 1
#reset()
return super(MyMainWindow, self).eventFilter(obj, event)
def test_decode_bad(self):
with self.assertRaises(TypeError):
b45decode(42)
for v in BAD_BASE45_STRINGS:
with self.assertRaises(ValueError):
b45decode(v)
def test_decode_good(self):
for binary_ref, encoded_ref in GOOD_DATA:
binary_res = b45decode(encoded_ref)
self.assertEqual(binary_res, binary_ref)
def _get_compressed(base45_code):
# noinspection PyBroadException
try:
return hexlify(b45decode(base45_code)).decode()
except Exception:
return None
if infile:
if open(infile, "rb").read(4) == b"%PDF":
# extract QR code from PDF using hard-coded index, size and bit depth.
# This will only work with the official Austrian green pass PDFs.
pdf = PyPDF2.PdfFileReader(open(infile, "rb"))
qr_img = pdf.getPage(0)['/Resources']['/XObject']['/Im3']
qr_pil = Image.frombytes("1", (400, 400), qr_img.getData())
else: # assume image
qr_pil = Image.open(infile)
# decode QR code into raw bytes:
qr_data_zlib_b45 = pyzbar.decode(qr_pil)[0].data
# strip header ('HC1:') and decompress data:
qr_data_zlib = base45.b45decode(qr_data_zlib_b45[4:])
# decompress:
qr_data = zlib.decompress(qr_data_zlib)
# decode cose document:
(_, (headers1, headers2, cbor_data, signature)) = flynn.decoder.loads(qr_data)
# decode cbor-encoded payload:
data = flynn.decoder.loads(cbor_data)
def date(ts):
return datetime.utcfromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S')
print("QR Code Issuer :", data[1])
print("QR Code Expiry :", date(data[4]))
def decode_certificate(encoded):
version = encoded[0:4]
if version != b'HC1:':
return None
compressed = encoded[4:]
return zlib.decompress(b45decode(compressed))
def run(self, text):
import base45
return base45.b45decode(str.encode(text)).decode(
'utf-8', errors="surrogateescape")
