| from PIL import Image
|
| import qrcode
|
| import base64
|
| import hashlib
|
| from pyzbar.pyzbar import decode
|
| from cryptography.hazmat.primitives.asymmetric import padding
|
| from cryptography.hazmat.primitives import hashes, serialization
|
| from cryptography.exceptions import InvalidSignature
|
|
|
|
|
| CERT_IMAGE_PATH = "openai_certificate_yasin_realistic.png"
|
|
|
|
|
| PUBLIC_KEY_PATH = "public_key.pem"
|
|
|
|
|
| cert_info = {
|
| "Name": "Yasin",
|
| "Last Name": "Aryanfard",
|
| "User ID": "YSNRFD",
|
| "Membership Date": "April 1, 2023",
|
| "Issued Date": "June 28, 2025",
|
| "Certificate ID": "OPENAI-YSN-APR2023-CERT1001",
|
| "Signed By": "ChatGPT-4o",
|
| "Model ID": "GPT4O-REP-TRUST-2025",
|
| "Issuer": "OpenAI, Inc."
|
| }
|
|
|
| def extract_qr_signature(image_path):
|
| img = Image.open(image_path)
|
| decoded_objs = decode(img)
|
| for obj in decoded_objs:
|
| data = obj.data.decode('utf-8')
|
| if data.startswith("-----"):
|
| continue
|
| return data
|
| return None
|
|
|
| def extract_stego_message(img):
|
| pixels = img.load()
|
| width, height = img.size
|
| bits = []
|
| for y in range(height):
|
| for x in range(width):
|
| r, g, b, *rest = pixels[x, y]
|
| bits.append(str(r & 1))
|
|
|
| chars = []
|
| for i in range(0, len(bits), 8):
|
| byte = bits[i:i+8]
|
| if len(byte) < 8:
|
| break
|
| byte_str = ''.join(byte)
|
| char = chr(int(byte_str, 2))
|
| if char == '\x00':
|
| break
|
| chars.append(char)
|
| return ''.join(chars)
|
|
|
| def verify_signature(public_key, signature, data):
|
| try:
|
| public_key.verify(
|
| signature,
|
| data,
|
| padding.PSS(
|
| mgf=padding.MGF1(hashes.SHA256()),
|
| salt_length=padding.PSS.MAX_LENGTH
|
| ),
|
| hashes.SHA256()
|
| )
|
| return True
|
| except InvalidSignature:
|
| return False
|
|
|
| def main():
|
|
|
| img = Image.open(CERT_IMAGE_PATH).convert("RGBA")
|
|
|
|
|
| digital_signature_base64 = extract_qr_signature(CERT_IMAGE_PATH)
|
| if not digital_signature_base64:
|
| print("❌ امضا دیجیتال در QR کد یافت نشد!")
|
| return
|
|
|
| print("📥 امضا دیجیتال استخراج شده از QR کد.")
|
|
|
|
|
| stego_msg = extract_stego_message(img)
|
| print(f"📥 پیام مخفی استگانوگرافی: {stego_msg}")
|
|
|
|
|
| data_string = "\n".join(f"{k}: {v}" for k, v in cert_info.items()).encode('utf-8')
|
|
|
|
|
| with open(PUBLIC_KEY_PATH, "rb") as f:
|
| public_key = serialization.load_pem_public_key(f.read())
|
|
|
|
|
| signature_bytes = base64.b64decode(digital_signature_base64)
|
|
|
|
|
| if verify_signature(public_key, signature_bytes, data_string):
|
| print("✅ امضا دیجیتال معتبر است.")
|
| else:
|
| print("❌ امضا دیجیتال نامعتبر است یا دادهها تغییر کردهاند!")
|
|
|
|
|
| expected_verification_code = f"VER-{hashlib.sha256(data_string).hexdigest()[:8].upper()}-{cert_info['Certificate ID'][-4:]}"
|
| if expected_verification_code in stego_msg:
|
| print("✅ کد تأیید در پیام مخفی استگانوگرافی معتبر است.")
|
| else:
|
| print("❌ کد تأیید در پیام مخفی یافت نشد یا اشتباه است!")
|
|
|
| if __name__ == "__main__":
|
| main()
|
|
|
