Today I made a small addition to a Javascript library I sometimes use to generate nonograms.

This tool can now build a solvable grid in the form of a valid QR Code that, once decoded, reveals some text:

To find more about it: Nonogram JS demo page.

Note that I've …

cf. https://fr.wikipedia.org/wiki/Fichier_de_test_Eicar

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

FROM: https://sebsauvage.net/links/?0rGdAQ

Pour vous amuser à en créer en Python, avec fpdf2:

#!/usr/bin/env python3
# REQUIRE: pip install fpdf2 pdf417 qrcode
import fpdf, pdf417, qrcode
EICAR = 'X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*'
pdf = fpdf.FPDF()
pdf.add_page()
pdf.set_font("Helvetica", size=30)
pdf.text(90, 20, "EICAR")
pdf.text(10, 60, "PDF-417:")
pdf.image(pdf417.render_image(pdf417.encode(EICAR)), x=10, y=60)
pdf.text(10, 140, "QRCode:")
pdf.image(qrcode.make(EICAR).get_image(), x=35, y=145)
pdf.output("eicar.pdf")

Détail des informations stockées dans le QR Code du pass vaccinal européen

#!/usr/bin/env python3
import sys
import zlib
import pprint
# Modules tiers (Pillow, Pyzbar, base45, cbor2)
import PIL.Image
import pyzbar.pyzbar
import base45
import cbor2

img = PIL.Image.open("qrcode.png")
data = pyzbar.pyzbar.decode(img)
cert = data[0].data.decode()
b45data = cert.replace("HC1:", "")
zlibdata = base45.b45decode(b45data)
cbordata = zlib.decompress(zlibdata)
decoded = cbor2.loads(cbordata)
print("Header\n----------------");
pprint.pprint(cbor2.loads(decoded.value[0]))
print("\nPayload\n----------------");
pprint.pprint(cbor2.loads(decoded.value[2]))
print("\nSignature ?\n----------------");
print(decoded.value[3])