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Aspose.PDF  for Python

Decrypt PDF in Python SDK

API for decrypting PDF documents using Cloud Python SDK.

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How to decrypt PDF via Cloud Python SDK

To decrypt PDF, we’ll use Aspose.PDF Cloud Python SDK. This Cloud SDK assists Python programmers in developing cloud-based PDF creator, annotator, editor, and converter apps using Python programming language via Aspose.PDF REST API. Simply create an account at Aspose for Cloud and get your application information. Once you have the App SID & key, you are ready to give the Aspose.PDF Cloud Python SDK. If the python package is hosted on Github, you can install directly from Github:

Installation from Github


     
    pip install git+https://github.com/aspose-pdf-cloud/aspose-pdf-cloud-python.git

Package Manager Console Command

     
    pip install asposepdfcloud

Steps to decrypt PDF via Python SDK

Aspose.PDF Cloud developers can easily load & decrypt PDF in just a few lines of code.

  1. Install Python SDK.
  2. Go to the Aspose Cloud Dashboard.
  3. Upload an encrypted PDF to the cloud.
  4. Decrypt the document with a specified password.
  5. Download the decrypted file back to a local directory.
 

Decrypt PDF using Python


    import shutil
    import json
    import logging
    from pathlib import Path
    import base64
    from asposepdfcloud import ApiClient, PdfApi, CryptoAlgorithm

    # Configure logging
    logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")

    class Config:
        """Configuration parameters."""
        CREDENTIALS_FILE = Path(r"C:\\Projects\\ASPOSE\\Pdf.Cloud\\Credentials\\credentials.json")
        LOCAL_FOLDER = Path(r"C:\Samples")
        PDF_DOCUMENT_NAME = "sample_encrypted.pdf"
        LOCAL_RESULT_DOCUMENT_NAME = "output_sample.pdf"
        DOCUMENT_PASSWORD = 'Owner-Password'
        
    class pdfEncryption:
        """Class for managing PDF encryption using Aspose PDF Cloud API."""
        def __init__(self, credentials_file: Path = Config.CREDENTIALS_FILE):
            self.pdf_api = None
            self._init_api(credentials_file)

        def _init_api(self, credentials_file: Path):
            """Initialize the API client."""
            try:
                with credentials_file.open("r", encoding="utf-8") as file:
                    credentials = json.load(file)
                    api_key, app_id = credentials.get("key"), credentials.get("id")
                    if not api_key or not app_id:
                        raise ValueError("init_api(): Error: Missing API keys in the credentials file.")
                    self.pdf_api = PdfApi(ApiClient(api_key, app_id))
            except (FileNotFoundError, json.JSONDecodeError, ValueError) as e:
                logging.error(f"init_api(): Failed to load credentials: {e}")

        def upload_document(self):
            """ Upload a PDF document to the Aspose Cloud server. """
            if self.pdf_api:
                file_path = Config.LOCAL_FOLDER / Config.PDF_DOCUMENT_NAME
                try:
                    self.pdf_api.upload_file(Config.PDF_DOCUMENT_NAME, str(file_path))
                    logging.info(f"upload_file(): File '{Config.PDF_DOCUMENT_NAME}' uploaded successfully.")
                except Exception as e:
                    logging.error(f"upload_document(): Failed to upload file: {e}")

        def download_result(self):
            """ Download the processed PDF document from the Aspose Cloud server. """
            if self.pdf_api:
                try:
                    temp_file = self.pdf_api.download_file(Config.PDF_DOCUMENT_NAME)
                    local_path = Config.LOCAL_FOLDER / Config.LOCAL_RESULT_DOCUMENT_NAME
                    shutil.move(temp_file, str(local_path))
                    logging.info(f"download_result(): File successfully downloaded: {local_path}")
                except Exception as e:
                    logging.error(f"download_result(): Failed to download file: {e}")

        def decrypt_document(self):
            """Decrypt the PDF document."""
            if self.pdf_api:
                try:
                    password_encoded = base64.b64encode(bytes(Config.DOCUMENT_PASSWORD, encoding='utf-8'))

                    response = self.pdf_api.post_decrypt_document_in_storage(Config.PDF_DOCUMENT_NAME, password_encoded)
                    if response.code == 200:
                        logging.info(f"decrypt_document(): Document #{Config.PDF_DOCUMENT_NAME} successfully decrypted.")
                    else:
                        logging.error(f"decrypt_document(): Failed to decrypt document #{Config.PDF_DOCUMENT_NAME}. Response code: {response.code}")
                except Exception as e:
                    logging.error(f"decrypt_document(): Error while decrypted document: {e}")


    if __name__ == "__main__":
        pdf_encrypt = pdfEncryption()
        pdf_encrypt.upload_document()
        pdf_encrypt.decrypt_document()
        pdf_encrypt.download_result()
 

Decrypt PDF

Decrypting a PDF document is crucial when access to its contents is restricted due to encryption. It allows authorized users to regain full control over the file, enabling editing, viewing, and content extraction. This process is especially important in workflows where secure documents must be accessed programmatically or integrated into larger systems. Using tools like Aspose.PDF Cloud, decryption can be performed easily and securely with just the correct owner or user password. This ensures sensitive information remains protected while still allowing flexibility for those who need legitimate access. Ultimately, decrypting a PDF enables smooth document handling and reinforces the importance of strong yet manageable document security practices. Decrypt PDF documents with Aspose.PDF Cloud Python SDK.

With our Python library you can:

  • Combine PDF documents.
  • Split PDF Files.
  • Convert PDF to other formats, and vice versa.
  • Manipulate Annotations.
  • Work with Images in PDF, etc.
  • You can try out our free Apps to test the functionality online.