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My Favorite Exclusive-Or

published on 2025-09-04 19:44:10 UTC by /u/sqli
Content:

I took a bunch of bits and spread them out into ARM's neon registers and then did cool math on them to replicate the effects of an exclusive-or. It turned out to be way faster than I anticipated.

I then wrote unit tests that take advantage of generative testing with Quickcheck to make sure it actually works. I had never seen Quickcheck used to unit test inline assembly but it seems like no function using in-line assembly should ever not be covered by generative testing.

I love how readable this is. Honestly, the Rust tooling is so good that I never have to write assembly outside of Rust again.

I can't really think of a reason not to, don't say file sizes 😩.

submitted by /u/sqli
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Article: My Favorite Exclusive-Or - published 29 days ago.

https://www.reddit.com/r/netsec/comments/1n8k3hk/my_favorite_exclusiveor/   
Published: 2025 09 04 19:44:10
Received: 2025 09 04 19:58:51
Feed: /r/netsec - Information Security News and Discussion
Source: /r/netsec - Information Security News and Discussion
Category: Cyber Security
Topic: Cyber Security
Views: 9

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