Doron Zarchy* me-retweet
There’s a new fully homomorphic encryption scheme on the block and it’s called DBFV, here’s what @ChrisPeikert has to say about it
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Doron Zarchy*
28 posts
Doron Zarchy* me-retweet
I’m really excited about this. The most important tech I got to work on to date.
A long-form post is coming. For now, excited to publish the theoretical paper of this new FHE scheme — just in time for the New Year!
Fhenix@fhenix
Fhenix has been working toward a single goal: VISA-level throughput for encrypted execution on Ethereum. For years, that sounded unrealistic. Today, our research team published DBFV - a new FHE scheme designed to make encrypted arithmetic meaningfully faster: eprint.iacr.org/2025/2321 Why this matters: addition and multiplication are the core building blocks behind AI inference and financial rails. Make those cheap, and entire new classes of encrypted applications stop being theoretical. This is an early step. But the direction is clear: we're making FHE scalable in a way previously unimagined Stay tuned - 2026 will be FHE coded.
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Doron Zarchy* me-retweet
DBFV is a game changer. Performant FHE is a critical milestone toward making cryptographic privacy practical, scalable, and secure across all use cases.
Fhenix@fhenix
Fhenix has been working toward a single goal: VISA-level throughput for encrypted execution on Ethereum. For years, that sounded unrealistic. Today, our research team published DBFV - a new FHE scheme designed to make encrypted arithmetic meaningfully faster: eprint.iacr.org/2025/2321 Why this matters: addition and multiplication are the core building blocks behind AI inference and financial rails. Make those cheap, and entire new classes of encrypted applications stop being theoretical. This is an early step. But the direction is clear: we're making FHE scalable in a way previously unimagined Stay tuned - 2026 will be FHE coded.
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Doron Zarchy* me-retweet
Fhenix has been working toward a single goal: VISA-level throughput for encrypted execution on Ethereum.
For years, that sounded unrealistic.
Today, our research team published DBFV - a new FHE scheme designed to make encrypted arithmetic meaningfully faster:
eprint.iacr.org/2025/2321
Why this matters: addition and multiplication are the core building blocks behind AI inference and financial rails.
Make those cheap, and entire new classes of encrypted applications stop being theoretical.
This is an early step.
But the direction is clear: we're making FHE scalable in a way previously unimagined
Stay tuned - 2026 will be FHE coded.
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Doron Zarchy* me-retweet
Our own Doron Zarchy (@DZeresh) is presenting today at @DeComputeConf - sharing his work on High-Throughput Universally Composable Threshold FHE Decryption, a paper previously awarded Distinguished Paper by @acm_ccs.
Proud of the Fhenix research team pushing privacy forward.
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A new SGX attack doesn’t mean TEEs are useless, we need a clearer language for privacy in Web3.
Just like rollup clarified scaling, we now need privacy stages for privacy.
(Guy Zyskind*)@GuyZys
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Doron Zarchy* me-retweet
In just 24 hours, our devs created this private x402 payments demo.
While they say "FHE is hard" or "immature," we already achieved 20,000x faster decryption, prioritized UX, optimized tech stacks, and built the functional FHE coprocessor.
Let's code?
fhenix.io/blog/fhenix402
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Doron Zarchy* me-retweet
Doron Zarchy* me-retweet
Doron Zarchy* me-retweet
NDA is lifted and we can finally talk about this. This hits all major TEEs - not just SGX.
I heard quite a few people claim that newer systems (and TDX) won't get broken. This puts it to rest. They are all vulnerable.
But that's not even the worst part. The biggest problem is Intel's response, saying that physical attacks are 'out-of-scope' for TEEs.
This was the straw that broke the camel's back for me - if these are viable attacks (and they clearly are), you can't just push them outside the threat model.
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Doron Zarchy* me-retweet
What can you get for $1,000?
43 months of Netflix Premium.
666 Costco Hot Dogs
Or, thanks to @DanielGenkin and friends — a homemade device that kills TEE and TDX.
This team built a simple $1K board that sits between the CPU and DDR5 memory.
By literally watching the electrical signals across the bus, they could see patterns in what’s supposed to be “encrypted” data.
Those patterns were enough to extract attestation keys from Intel SGX, TDX, and AMD SEV-SNP — the very keys that prove a system is secure.
What it really means: Every time someone says “we run in a TEE / TDX ” you should hear —
“we trust no one will ever touch the motherboard.”
That model is done. The only path forward is cryptography that doesn’t rely on trusting hardware.
I’ve said it before, and I’ll say it again — TEEs and their cousins are a dead end for decentralized computation.
They had their moment. It’s over.
tee.fail/files/paper.pdf
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Doron Zarchy* me-retweet
Three things just changed:
1/ FHE decryption got 20,000× faster
2/ Private DeFi is unlocked
3/ Fhenix made it happen
READ HOW ↴
x.com/FhenixIO/statu…
Fhenix@fhenix
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We're live from @acm_ccs in Taiwan:
x.com/i/broadcasts/1…
Tune in and retweet ;)
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Doron Zarchy* me-retweet
@binji_x Privacy=security. Individuals should not have their data leaked and become targets.
Institutions should be held liable to the highest possible personal privacy standards, or we should build out tech solutions that force them to do so
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Doron Zarchy* me-retweet
Happening in 1 hour!
Fhenix Research takes the stage at @acm_ccs, one of the world’s top cryptography conferences.
Paper co-authored by @GuyZys, @ChrisPeikert, @DZeresh and @max_zengo.
Watch live: x.com/i/broadcasts/1…
Fhenix@fhenix
Tomorrow, 2:30 PM (Taiwan time) - Doron Zarchy, Fhenix Research, presents live at @acm_ccs, one of the most prestigious conferences in security and cryptography. Until now, threshold FHE decryption was the bottleneck. Now it’s 20 000× faster and 37× lower latency. Co-authored by @GuyZys, @ChrisPeikert, @DZeresh, and @max_zengo, this paper unlocks Private DeFi - and far beyond. x.com/i/broadcasts/1…
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@AngieMKTmom @fhenix @acm_ccs Thanks Angie. Thanks to @GuyZys and @ChrisPeikert who are major part of that.
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Doron Zarchy* me-retweet
מקריב החטופים והחיילים לצרכי הימלטות ממשפט, יכול לשכוח מחנינה. העם לא ייתן!
עברית
Doron Zarchy* me-retweet
Why is everyone shi*ting on TEEs right now?
What’s the real stack for onchain privacy?
And why FHE might finally make private DeFi practical?
We’re going live with @zama in ~3h to break it all down.
Tune in:
x.com/i/broadcasts/1…
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@fhenix I’m really proud to be part of this incredibly talented, hard-working team. FHE is finally becoming practical.
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Doron Zarchy* me-retweet
