> For the complete documentation index, see [llms.txt](https://docs.rocketfuel.inc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rocketfuel.inc/developer-guides/api-reference/payins/encryption-algorithm.md).

# Encryption Algorithm

- [Public Key Based](https://docs.rocketfuel.inc/developer-guides/api-reference/payins/encryption-algorithm/public-key-based.md)
- [Secret Key Based](https://docs.rocketfuel.inc/developer-guides/api-reference/payins/encryption-algorithm/secret-key-based.md)