agentsystems-notary

Create a digital notary service application using Python that leverages the 'agentsystems-notary' package to cryptographically notarize documents. This application will allow users to upload files, such as PDFs, Word documents, or images, and receive a tamper-proof notarized version of the file along with a cryptographic proof of its integrity. Here are the steps and features your application should include:

1. **User Interface**: Design a simple yet intuitive user interface where users can upload their files. Ensure that the UI supports multiple file types and provides real-time feedback about the file upload process.
2. **File Upload Handling**: Implement a backend that securely handles file uploads from the client side. This includes setting up a server to receive the files and validate their content before processing.
3. **Notarization Process**: Utilize the 'agentsystems-notary' package to notarize the uploaded files. This involves generating a cryptographic hash of the file content, signing it with a private key, and storing both the original file and the signed hash together in a secure manner.
4. **Download Notarized Files**: After notarization, provide users with the ability to download the notarized file and its associated cryptographic proof. Ensure that the downloaded files are clearly marked as notarized.
5. **Verification Tool**: Include a feature within the application that allows users to verify the authenticity of the notarized files. Users should be able to input the file and check if it matches the stored cryptographic proof, ensuring no alterations have been made since notarization.
6. **Security Measures**: Ensure all data transmitted between the client and server is encrypted. Additionally, implement robust security measures to protect against common web vulnerabilities like SQL injection and cross-site scripting (XSS).
7. **Logging and Monitoring**: Set up logging mechanisms to track important events such as file uploads, notarizations, and verifications. Also, implement monitoring tools to keep an eye on the application’s performance and any potential security breaches.
8. **Documentation**: Provide comprehensive documentation detailing how to use the application, including setup instructions, API documentation, and guidelines for developers who might want to extend or modify the application.

By completing this project, you'll create a powerful tool that ensures the integrity and authenticity of digital documents, demonstrating your skills in cryptography, web development, and Python programming.