> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/uwp/security.md). # Security - [Securing PDFs with UWP library](https://docs.apryse.com/uwp/security/security.md): Learn how to secure and read documents with encryption using PDFSecure, a powerful command-line tool. Protect your PDFs with password security and adjust permissions effortlessly. The Apryse uwp SDK s - [Encrypting & securing PDFs in UWP](https://docs.apryse.com/uwp/security/encrypt.md): Secure PDF documents with password protection and permissions using Apryse SDK. Learn about encryption support, standard security handlers, and custom implementations for enhanced document security. T - [Decrypt & read a PDF document in UWP](https://docs.apryse.com/uwp/security/decrypt.md): Guide to read a PDF document with password protection. - [Apryse Custom Security Handler in UWP](https://docs.apryse.com/uwp/security/custom-handler.md): Discover how the Apryse Custom Security Handler encrypts files for Digital Rights Management (DRM) with ease. Learn about encryption methods and unique custom IDs for enhanced security. Explore sample - [Code samples to secure PDFs via encryption / decryption in UWP](https://docs.apryse.com/uwp/security/samples.md): Learn how to encrypt and decrypt PDF files using PDFNet. Explore encryption support and sample code for securing your documents with a new SecurityHandler. The Apryse uwp SDK streamlines secure docume - [APIs for securing PDFs in UWP](https://docs.apryse.com/uwp/security/apis.md): Enhance PDF document security with utility classes in UWP C# using pdftron.SDF.SecurityHandler. Learn how to protect your PDFs effectively. The Apryse uwp SDK streamlines secure document processing. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.apryse.com/uwp/security.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.