> For the complete documentation index, see [llms.txt](https://cryptobook.nakov.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cryptobook.nakov.com/symmetric-key-ciphers/chacha20-poly1305.md).

# ChaCha20-Poly1305

## ChaCha20-Poly1305

**\[TODO]**

The AEAD construction **ChaCha20-Poly1305** combines the **ChaCha20** stream cipher paired with the **Poly1305** authenticator...

## Chacha20-Poly1305 - Example in Python

<https://github.com/ph4r05/py-chacha20poly1305>

**\[TODO]**