# Page Not Found

The URL `installation/index.html` does not exist.

You might be looking for one of these pages:
- [Installation](https://libsodium.gitbook.io/doc/installation.md)
- [Internals](https://libsodium.gitbook.io/doc/internals.md)
- [HKDF](https://libsodium.gitbook.io/doc/key_derivation/hkdf.md)
- [Finite field arithmetic](https://libsodium.gitbook.io/doc/advanced/point-arithmetic.md)
- [Authenticated encryption](https://libsodium.gitbook.io/doc/public-key_cryptography/authenticated_encryption.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://libsodium.gitbook.io/doc/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://libsodium.gitbook.io/doc/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/doc/installation.md`)
- Use `Accept: text/markdown` header for content negotiation