---
id: 1992
title: "What do La Croix, octonions, and Second Life have in common?"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2019/01/02/what-do-la-croix-octonions-and-second-life-have-in-common/"
published_at: "2019-01-02T11:50:33Z"
tags: ["ctf", "cryptography", "dsa", "trailofbits", "csaw", "octonions"]
phying_url: "https://phying.com/item/1992"
lang: en
---

# What do La Croix, octonions, and Second Life have in common?

## Summary

Write-up of Trail of Bits' CSAW CTF cryptography challenges, including 'Holywater,' a math-heavy octonion-based problem split between qualifiers and finals.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2019-01-02T11:50:33Z
- **Original:** https://blog.trailofbits.com/2019/01/02/what-do-la-croix-octonions-and-second-life-have-in-common/
- **Phying News:** https://phying.com/item/1992