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JP Aumasson

@aumasson.jp
1.3K followers 80 following 144 posts

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

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JP Aumasson @aumasson.jp · 25/09/2026
on Markku breaking bad crypto from China www.bfswa.blog/p/cryptograp...
bfswa.blog
Cryptographic mass murder
China’s cryptography standardization project
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Reposted by JP Aumasson
Carbonadoks @carbonadoks.com · 24/09/2026
Pleometrics PC-98 P(Doom) video is so good.
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JP Aumasson @aumasson.jp · 26/08/2026
I used GPT to break an ePrint cipher www.bfswa.blog/p/blood-meri...
bfswa.blog
Blood MERIDIAN
LLM cryptanalysis of a blockcipher that is isn't a blockcipher
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JP Aumasson @aumasson.jp · 03/08/2026
quick write-up about my evening read www.bfswa.blog/p/inside-the...
bfswa.blog
Inside The Road's graphic novel
On Manu Larcenet’s magnificent, yet imperfect adaptation
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JP Aumasson @aumasson.jp · 31/07/2026
www.bfswa.blog/p/llms-wont-...
bfswa.blog
LLMs won't break symmetric crypto
And Anthropic's cryptanalysis work is great
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JP Aumasson @aumasson.jp · 20/07/2026
www.bfswa.blog/p/crypto-eth...
bfswa.blog
Crypto ethymology
What's the origins of names like Ascon, Keccak, Kyber, and Rijndael?
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JP Aumasson @aumasson.jp · 19/07/2026
www.bfswa.blog/p/real-world...
bfswa.blog
Real-world decryption
When decryption is both easy and hard
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JP Aumasson @aumasson.jp · 16/07/2026
possibly my most inspired post bfswa.substack.com/p/no-country...
bfswa.substack.com
No Country for Old Men & The Road
The Eras Tour, Cormac McCarthy (5/6)
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JP Aumasson @aumasson.jp · 26/06/2026
new post bfswa.substack.com/p/the-border...
bfswa.substack.com
The Border Trilogy
The Eras Tour, Cormac McCarthy (4/6)
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JP Aumasson @aumasson.jp · 25/06/2026
did some USG infosec archeology bfswa.substack.com/p/on-high-va...
bfswa.substack.com
On high value assets (HVA) and high impact systems in U.S. federal infosec
and not the post-quantum cryptography migration context they relate to
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JP Aumasson @aumasson.jp · 09/06/2026
bfswa.substack.com/p/too-much-c...
bfswa.substack.com
Too Much Crypto explained
An LLM's attempt to explain my controversial cryptography paper
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JP Aumasson @aumasson.jp · 21/05/2026
took me a while bfswa.substack.com/p/blood-meri...
bfswa.substack.com
Blood Meridian
The Eras Tour, Cormac McCarthy (3/5)
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JP Aumasson @aumasson.jp · 13/05/2026
bfswa.substack.com/p/pen-and-pa...
bfswa.substack.com
Pen & paper quantum computing
The math is super easy don't be scared by the Greek letters
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JP Aumasson @aumasson.jp · 09/05/2026
www.aumasson.jp/data/talks/p...
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JP Aumasson @aumasson.jp · 09/05/2026
new post bfswa.substack.com/p/the-eras-t...
bfswa.substack.com
The Eras Tour, Cormac McCarthy (2/5)
Era 1: The Southern Gothic years
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JP Aumasson @aumasson.jp · 31/03/2026
major update github.com/veorq/awesom...
github.com
GitHub - veorq/awesome-post-quantum: A curated list of resources about post-quantum cryptography.
A curated list of resources about post-quantum cryptography. - veorq/awesome-post-quantum
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JP Aumasson @aumasson.jp · 29/03/2026
#noncrypto bfswa.substack.com/p/the-eras-t...
bfswa.substack.com
The Eras Tour, Cormac McCarthy (1/5)
Era 0: Youth short stories
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JP Aumasson @aumasson.jp · 27/03/2026
Q-merch store.aumasson.jp
store.aumasson.jp
Serious Quantum
Spring Store
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Reposted by JP Aumasson
Gynvael Coldwind @gynvael.bsky.social · 27/03/2026
A perfect 1-page Friday reading → here's a fun article by Jacob Strieb about (ab)using <canvas> element in HTML and PNGs to get DEFLATE compression into older browsers (without reimplementing the whole thing in JS).
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Reposted by JP Aumasson
Dare Obasanjo @carnage4life.bsky.social · 27/03/2026
Just saw the leaked images from a former podcaster turned government official’s account being hacked. If you elect clowns, you get a circus.
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Reposted by JP Aumasson
Molly White @molly.wiki · 27/03/2026
As they angle for a presidential pardon in television interviews, Sam Bankman-Fried’s law professor parents file “pro se” motions for their adult son, leave voicemails with the judge, and sign documents claiming they're from him in prison.
citationneeded.news
Sam Bankman-Fried’s helicopter parents crash into federal court
SBF praises Trump from prison, his parents beg for a pardon on CNN, and his legal ethics professor mother files court documents claiming to be from him — prompting a judge to demand he swear under oat...
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JP Aumasson @aumasson.jp · 27/03/2026
is "Q-day" in French "le jour Q"?
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JP Aumasson @aumasson.jp · 27/03/2026
NEA-7 = Kuznyechik via news.risky.biz/risky-bullet... iz.ru/2061648/vale...
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JP Aumasson @aumasson.jp · 19/03/2026
this and more on my QUANTUM merch store (promo code QUBITS, valid for a week) store.aumasson.jp
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JP Aumasson @aumasson.jp · 19/03/2026
bfswa.substack.com/p/im-so-tired
bfswa.substack.com
I'm so tired
of correcting quantum computing misconceptions
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JP Aumasson @aumasson.jp · 08/02/2026
bfswa.substack.com/p/bletchley-...
bfswa.substack.com
Bletchley Park
A cryptographer's pilgrimage
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JP Aumasson @aumasson.jp · 01/02/2026
Last ̶c̶h̶a̶p̶t̶ 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-...
bfswa.substack.com
The Ninth Berth – Tractate 10: Lights
10/10
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JP Aumasson @aumasson.jp · 27/01/2026
quick note on trustlessness and SPoFs bfswa.substack.com/p/trust-them...
bfswa.substack.com
Trust them, don't trust it
A note on trust and SPoFs
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Reposted by JP Aumasson
JP Aumasson @aumasson.jp · 27/12/2025
bfswa.substack.com/p/dealing-wi...
bfswa.substack.com
Dealing with airport secondary screening
When you have nothing to hide
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JP Aumasson @aumasson.jp · 17/01/2026
bfswa.substack.com/p/quantum-co...
bfswa.substack.com
Quantum computing for lawyers
and anyone who’s not sure what “quantum” means
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JP Aumasson @aumasson.jp · 27/12/2025
bfswa.substack.com/p/dealing-wi...
bfswa.substack.com
Dealing with airport secondary screening
When you have nothing to hide
142
JP Aumasson @aumasson.jp · 27/12/2025
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.
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Reposted by JP Aumasson
Matthew Green @matthewdgreen.bsky.social · 16/12/2025
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.
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JP Aumasson @aumasson.jp · 14/12/2025
bfswa.substack.com/p/it-web3-se...
bfswa.substack.com
It web3 security going great?
Nah.
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JP Aumasson @aumasson.jp · 13/12/2025
remember email bfswa.substack.com/p/poor-johnn...
bfswa.substack.com
Poor Johnny still won't encrypt
The state of email encryption
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JP Aumasson @aumasson.jp · 07/12/2025
#notcrypto bfswa.substack.com/p/music-sunday
bfswa.substack.com
Music Sunday
Detour into classical guitar
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Reposted by JP Aumasson
DilDog 🅅 @dildog.l0pht.com · 04/12/2025
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
'End-To-End Encrypted' Smart Toilet Camera Is Not Actually End-To-End Encrypted
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JP Aumasson @aumasson.jp · 04/12/2025
bfswa.substack.com/p/upbit-hack...
bfswa.substack.com
Upbit hack's Occam's razor
and ECDSA's fragility
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Reposted by JP Aumasson
No Starch Press @nostarchpress.bsky.social · 01/12/2025
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: www.humblebundle.com/books/hacking-…
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JP Aumasson @aumasson.jp · 30/11/2025
bfswa.substack.com/p/opsec-guid...
bfswa.substack.com
OPSEC guide BTS
From Frankfurt to WIRED
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Reposted by JP Aumasson
Lily Hay Newman @lhn.bsky.social · 29/11/2025
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...
wired.com
The WIRED Guide to Digital Opsec for Teens
Practicing good “operations 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.
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JP Aumasson @aumasson.jp · 29/11/2025
did that with @lhn.bsky.social
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JP Aumasson @aumasson.jp · 27/11/2025
bfswa.substack.com/p/crypto-inv...
bfswa.substack.com
Crypto investment advice
Profit 100% guaranteed
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JP Aumasson @aumasson.jp · 24/11/2025
in 5 years bfswa.substack.com/p/when-will-...
bfswa.substack.com
When will quantum break crypto? the answer will shock you
And other crypto-prophecies.
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Reposted by JP Aumasson
Ben Adida @benadida.com · 22/11/2025
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...
nytimes.com
Cryptographers Held an Election. They Can’t Decrypt the Results.
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JP Aumasson @aumasson.jp · 18/11/2025
bfswa.substack.com/p/bad-bad-cr...
bfswa.substack.com
Bad, bad crypto
Is not good crypto
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JP Aumasson @aumasson.jp · 17/11/2025
new blog post bfswa.substack.com/p/6-years-af...
bfswa.substack.com
6 years after too much crypto
Test of time passed
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JP Aumasson @aumasson.jp · 13/11/2025
Started a Substack. Subscribe for more crypto investment advice. bfswa.substack.com/p/quantum-co...
bfswa.substack.com
Quantum computers will not steal your bitcoins, even if they can
The quantum gravity principle
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Reposted by JP Aumasson
Condé Union @condeunion.bsky.social · 09/11/2025
Stand with Condé 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...
Stand with Condé Nast Union. Sign our petition.Stand with Condé 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. Use the link in bio to add your name.
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Reposted by JP Aumasson
Lily Hay Newman @lhn.bsky.social · 10/10/2025
As Apple expands its bug bounty, I spoke with VP Ivan Krstić about the significance + recent big swings like Memory Integrity Enforcement. These steps protect all users, but particularly those targeted by spyware: “We feel a great moral obligation to defend those users” www.wired.com/story/apple-...
wired.com
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.
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