JP Aumasson's Avatar

JP Aumasson

@aumasson.jp

https://aumasson.jp cofounder & CSO @ taurushq.com cryptographer (BLAKE2, BLAKE3, SipHash) author of Serious Cryptography https://nostarch.com/serious-cryptography-2nd-edition and other books Signal: jpa.01

1,242
Followers
79
Following
121
Posts
01.05.2023
Joined
Posts Following

Latest posts by JP Aumasson @aumasson.jp

Preview
Bletchley Park A cryptographer's pilgrimage

bfswa.substack.com/p/bletchley-...

08.02.2026 11:55 πŸ‘ 5 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
Preview
The Ninth Berth – Tractate 10: Lights 10/10

Last ΜΆcΜΆhΜΆaΜΆpΜΆtΜΆ tractate of my serialized novella, and the best one. I'll collect feedback, do more editing, and get it printed. The featured photo's mine.
bfswa.substack.com/p/the-ninth-...

01.02.2026 18:26 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

merci, on va corriger!

28.01.2026 07:34 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Trust them, don't trust it A note on trust and SPoFs

quick note on trustlessness and SPoFs bfswa.substack.com/p/trust-them...

27.01.2026 20:26 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Preview
Dealing with airport secondary screening When you have nothing to hide

bfswa.substack.com/p/dealing-wi...

27.12.2025 19:45 πŸ‘ 4 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Preview
Quantum computing for lawyers and anyone who’s not sure what β€œquantum” means

bfswa.substack.com/p/quantum-co...

17.01.2026 20:11 πŸ‘ 40 πŸ” 7 πŸ’¬ 2 πŸ“Œ 2
Preview
Dealing with airport secondary screening When you have nothing to hide

bfswa.substack.com/p/dealing-wi...

27.12.2025 19:45 πŸ‘ 4 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Post image

2026 will bring more blockchain/quantum/AI scams, hacks, overvaluations, bankruptcies; VC psyops, trolls and bots, paid articles and endorsements.

Meanwhile there wont be no...
- "AGI"
- useful/practical quantum computers
- meaningful blockchain use beyond tokenization

Like the past 10 years.

27.12.2025 11:15 πŸ‘ 24 πŸ” 6 πŸ’¬ 1 πŸ“Œ 0
Post image

Imagine it’s 2013 and you see this document from the UK sent back from the future. You’ll assume something went very wrong in that timeline.

16.12.2025 14:21 πŸ‘ 39 πŸ” 12 πŸ’¬ 6 πŸ“Œ 3
Preview
It web3 security going great? Nah.

bfswa.substack.com/p/it-web3-se...

14.12.2025 10:02 πŸ‘ 8 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Preview
Poor Johnny still won't encrypt The state of email encryption

remember email
bfswa.substack.com/p/poor-johnn...

13.12.2025 08:00 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
Preview
Music Sunday Detour into classical guitar

#notcrypto bfswa.substack.com/p/music-sunday

07.12.2025 12:03 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
'End-To-End Encrypted' Smart Toilet Camera Is Not Actually End-To-End Encrypted

'End-To-End Encrypted' Smart Toilet Camera Is Not Actually End-To-End Encrypted

they stole my idea for browncloud

somewhere there is a click farm in indonesia looking at pictures of your turds and training an AI to judge your poop

and apparently it is not ass-to-ass encrypted

04.12.2025 13:32 πŸ‘ 9 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0
Preview
Upbit hack's Occam's razor and ECDSA's fragility

bfswa.substack.com/p/upbit-hack...

04.12.2025 07:49 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
Post image

Build your offensive security lab with 18 DRM-free books worth $700+. Download once, read anywhere, keep forever.

Pay what you want (starting around $36) and support the EFF while you’re at it: https://www.humblebundle.com/books/hacking-no-starch-books

01.12.2025 19:00 πŸ‘ 40 πŸ” 23 πŸ’¬ 1 πŸ“Œ 1
Preview
OPSEC guide BTS From Frankfurt to WIRED

bfswa.substack.com/p/opsec-guid...

30.11.2025 07:27 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Preview
The WIRED Guide to Digital Opsec for Teens Practicing good β€œoperations security” is essential to staying safe online. Here's a complete guide for teenagers (and anyone else) who wants to button up their digital lives.

I was really thrilled to get to work on The WIRED Guide to Digital Opsec for Teens with @aumasson.jp. I think we did a good job but also apologies in advance to the teens that we tried to make jokes and generally Be Chill. Also no paywall to make it easier to share! www.wired.com/story/digita...

29.11.2025 14:51 πŸ‘ 165 πŸ” 73 πŸ’¬ 1 πŸ“Œ 3

did that with @lhn.bsky.social

29.11.2025 13:58 πŸ‘ 7 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
Preview
Crypto investment advice Profit 100% guaranteed

bfswa.substack.com/p/crypto-inv...

27.11.2025 21:38 πŸ‘ 9 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
Post image

even the marketing-oriented IBM roadmap doesnt really support "break 256-bit ECC in 2030"

25.11.2025 12:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
When will quantum break crypto? the answer will shock you And other crypto-prophecies.

in 5 years bfswa.substack.com/p/when-will-...

24.11.2025 11:52 πŸ‘ 9 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
Preview
Cryptographers Held an Election. They Can’t Decrypt the Results.

The International Association for Cryptologic Research has used heliosvoting.org – my online voting system – for a number of years.

This year, a trustee lost their secret key. The election has to be re-run.

Below, a few thoughts that didn't fit in the NYT piece.

www.nytimes.com/2025/11/21/w...

22.11.2025 02:40 πŸ‘ 121 πŸ” 40 πŸ’¬ 3 πŸ“Œ 3
Preview
Bad, bad crypto Is not good crypto

bfswa.substack.com/p/bad-bad-cr...

18.11.2025 21:53 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
Preview
6 years after too much crypto Test of time passed

new blog post bfswa.substack.com/p/6-years-af...

17.11.2025 06:09 πŸ‘ 11 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
Preview
The History of Doctor Doom β€” Brooklyn Comic Con When it comes to superhero comics, villains are an integral part of the medium. It doesn’t matter how good your heroes are, if the villains don’t live up to the task, the story is not going to be as c...

copied from www.bkcomiccon.com/bkcc-blog/th...

13.11.2025 12:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Quantum computers will not steal your bitcoins, even if they can The quantum gravity principle

Started a Substack. Subscribe for more crypto investment advice.
bfswa.substack.com/p/quantum-co...

13.11.2025 08:27 πŸ‘ 1 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
Stand with CondΓ© Nast Union. Sign our petition.

Stand with CondΓ© Nast Union. Sign our petition.

Stand with CondΓ© Nast Union 
οΏΌ
We’re calling on you to sign our petition telling management to reinstate the Fired Four, reverse the suspensions, and end the union busting. Use the link in bio to add your name.

Stand with CondΓ© Nast Union οΏΌ We’re calling on you to sign our petition telling management to reinstate the Fired Four, reverse the suspensions, and end the union busting. Use the link in bio to add your name.

Stand with CondΓ© Nast Union 🚨 We’re calling on you to sign our petition telling management to reinstate the Fired Four, reverse the suspensions, and end the union busting.

Sign here: actionnetwork.org/petitions/te...

09.11.2025 15:00 πŸ‘ 338 πŸ” 157 πŸ’¬ 2 πŸ“Œ 5
Preview
Apple Announces $2 Million Bug Bounty Reward for the Most Dangerous Exploits With the mercenary spyware industry booming, Apple VP Ivan Krstić tells WIRED that the company is also offering bonuses that could bring the max total reward for iPhone exploits to $5 million.

As Apple expands its bug bounty, I spoke with VP Ivan KrstiΔ‡ about the significance + recent big swings like Memory Integrity Enforcement. These steps protect all users, but particularly those targeted by spyware: β€œWe feel a great moral obligation to defend those users” www.wired.com/story/apple-...

10.10.2025 13:06 πŸ‘ 23 πŸ” 7 πŸ’¬ 0 πŸ“Œ 2
Post image

We've built ML-DSA-B, ML-DSA powered by BLAKE3 instead of SHAKE.

Up to 20% faster signing, 30% faster verification, 60x pre-hash.

Code & details: github.com/PQC-Suite-B

With @zooko.bsky.social @aumasson.jp @conordeegan.bsky.social from Project Eleven

09.10.2025 14:17 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Post image

Thanks to the American University of Beirut for inviting me to talk about about quantum. Amazing audience, never had that many question. Even bigger thanks to @nadim.computer for making this happen and showing me great places in Lebanon.
Slides: www.aumasson.jp/data/talks/A....

24.09.2025 08:13 πŸ‘ 13 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1