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62 lines
2.1 KiB
Python
62 lines
2.1 KiB
Python
import PyPDF2
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import requests
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import hashlib
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import io
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def verify_bank_pdf(pdf_url):
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"""
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Download a PDF from a given URL and perform basic integrity checks.
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Args:
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pdf_url (str): The URL of the PDF file to download and verify.
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Returns:
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dict: A dictionary containing verification results.
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"""
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try:
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# Download the PDF
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response = requests.get(pdf_url)
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if response.status_code != 200:
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return {"success": False, "message": f"Failed to download PDF. Status code: {response.status_code}"}
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pdf_content = response.content
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# Calculate MD5 hash of the PDF
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md5_hash = hashlib.md5(pdf_content).hexdigest()
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# Read the PDF
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pdf_reader = PyPDF2.PdfReader(io.BytesIO(pdf_content))
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# Extract metadata
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metadata = pdf_reader.metadata
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# Check if the PDF is encrypted
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is_encrypted = pdf_reader.is_encrypted
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# Get the number of pages
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num_pages = len(pdf_reader.pages)
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# Check for digital signatures (this is a basic check and may not catch all types of signatures)
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has_signature = '/Sig' in pdf_reader.trailer['/Root'].get('/AcroForm', {}).get('/Fields', {})
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return {
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"success": True,
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"md5_hash": md5_hash,
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"is_encrypted": is_encrypted,
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"num_pages": num_pages,
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"has_signature": has_signature,
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"metadata": {
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"author": metadata.get('/Author', 'N/A'),
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"creator": metadata.get('/Creator', 'N/A'),
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"producer": metadata.get('/Producer', 'N/A'),
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"subject": metadata.get('/Subject', 'N/A'),
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"title": metadata.get('/Title', 'N/A'),
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"creation_date": metadata.get('/CreationDate', 'N/A'),
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"modification_date": metadata.get('/ModDate', 'N/A')
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}
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}
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except Exception as e:
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return {"success": False, "message": f"An error occurred: {str(e)}"}
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# Example usage
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result = verify_bank_pdf("http://127.0.0.1:5500/bank-statement-1.pdf")
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print(result) |