Cypher Stack

Cypher Stack is a blockchain dev, design, research, and consultation company. We do good work.

[Cypher Stack @cypher_stack]

Check out the syllabus here: https://t.co/o9l4XPL15g Shoot a DM if this sounds interesting to you. Chat groups will be spinning up soon

[Cypher Stack @cypher_stack]

Cypher Stack is launching Cypher Stack Academy, a 13-week cryptography course to help people learn the basics of cryptography with a focus on what it does in cryptocurrency with an expected start date of November 2nd.

[Cypher Stack @cypher_stack]

Cypher Stack cryptographers have always been on the bleeding edge of privacy and security in cryptocurrency, being key personnel in the creation of @firoorg Lelantus Spark and doing mountains of work for @monero's upcoming FCMP++ upgrade.

[Freeman Slaughter @IsomorphismThm]

Shoutout to my good pal Samuel Graf Noether and the wonderful @cypher_stack team for addressing this Firo inflation bug! https://t.co/VSffP9s0Xr

[Cypher Stack @cypher_stack]

Yeah we're pretty cool.

[Monero Research Lab (Unofficial) @MoneroResearchL]

The FCMP++ 1a/1b integration audit has officially kicked off. @MagicGrants selected Trail of Bits (Vendor 1) over the other shortlisted vendor due to significantly better scheduling (expected start May 11 after a preparation week, completion by May 22). The chosen auditors bring strong relevant experience in cryptographic theory, implementation review, and Rust FFI. @cypher_stack is conducting an independent, unfunded parallel code review and has already made substantial progress.

sgp_: The FCMP++ 1a/1b audit process has kicked off. I have a call to discuss GBPs with zksec tomorrow. I hope to move forward with that quickly, with a goal of final approval during next week's meeting.
sgp_: For FCMP++ 1a/1b, we ended up going with vendor 1 instead of 4 due to scheduling. Both are good choices, but vendor 1 will deliver 2 months sooner
tevador: Who is Vendor 1?
jberman: Vendor 1 is Trail of Bits
rucknium: > The FCMP++ 1a/1b audit process has kicked off.
rucknium: > I have a call to discuss GBPs with zksec tomorrow. I hope to move forward with that quickly, with a goal of final approval during next week's meeting.
rucknium: > The divisors paper from zksec suggested small fixes and we're looking at those, but we don't expect these to require actual changes in the code.
rucknium: > A helioseleine secondary audit will be prudent. I need to write up what makes the most sense for that. Some stuff was formally proven, but other stuff wasn't and needs manual review
rucknium: > For FCMP++ 1a/1b, we ended up going with vendor 1 instead of 4 due to scheduling. Both are good choices, but vendor 1 will deliver 2 months sooner
jberman: The specific candidates Trail of Bits (ToB) shared who would work on the integration audit had direct relevant experience on cryptography theory and impl review, as well as with Rust FFI's
jeffro256: ToB can allegedly start working May th
jeffro256: 4th
jberman: May 11th*
articmine: ..and expected completion
jberman: With expected completion date of May 22nd
jeffro256: Did they change it?
jberman: They want to use next week to prepare and plan with us, and then actually begin the 11th
tevador: I have a comment about the future audit of mx25519: Since Carrot doesn't use the scalar inversion code, it could be removed from the library to simplify the audit. Pinging jeffro256 to confirm.
jeffro256: Yes, Carrot doesn't ever use the scalar inversion code
jeffro256: Although, wouldn't Jamtis still use it for the Janus check?
tevador: Yes, Jamtis will use it, but I'll have to check if your changes in the library are compatible.
tevador: It might be better to leave it for a future Jamtis audit.
jeffro256: That's totally fair. It could definitely be excluded from an audit scope
koe000: It may be more efficient to review the inversion now instead of later, since the auditor will already be in the mindset. Separating means paying for an auditor to set up that mindset twice.
tevador: koe000: the inversion code is completely separate from the ladder code, it should have been two libraries instead of one
diego: hi can I speak on the audit thing?
I can do so after the meeting
rucknium: diego, Yes
diego: Cypher Stack is doing a code review too. We weren't chosen for the money, but it doesn't matter. We started weeks ago. You should still go with the other group too btw.
Should be done in a few weeks. Big progress on it already.
https://t.co/yuFVb7Hgqi

[Cypher Stack @cypher_stack]

Lots of Cypher Stack peeps are going to be at #39C3 this year as part of the Critical Decentralisation Cluster. Who all's going?

[Cypher Stack @cypher_stack]

@unstoppablebyhs We researchers are working as fast as we can! :( Donate pizza money so we can work longer.

[Cypher Stack @cypher_stack]

This was incredible. With literally zero notice (I messaged as the livestream was going), @DavidBurkett38 joined our livestream and talked MWEB with us. Thank you so much for joing us David and filling the gaps in our knowledge!

[Cypher Stack @cypher_stack]

Come join us. We'll be live in about 5 min!

https://t.co/AWxfMJFAGX

[Cypher Stack @cypher_stack]

Come join us. We'll be live in about 5 min!

https://t.co/AWxfMJFAGX

[Cypher Stack @cypher_stack]

Reminder to everyone, this livestream is happening today!

[Cypher Stack @cypher_stack]

Cypher Stack will have its second research livestream on Wednesday, October 29th at 3PM EST. Come be a fly on the wall as some of the smartest cryptographers / mathematicians in the space talk about math and research.

On the docket this time, @litecoin's MWEB technology.

[MoneroTalk @MoneroTalk]

The Privacy Coin Surge: How Monero, Zcash, and Others Are Competing — w/ Diego Salazar https://t.co/ex3fU3VBUg

[Cypher Stack @cypher_stack]

Cypher Stack will have its second research livestream on Wednesday, October 29th at 3PM EST. Come be a fly on the wall as some of the smartest cryptographers / mathematicians in the space talk about math and research.

On the docket this time, @litecoin's MWEB technology.

[Reuben Yap priv/acc @reubenyap]

Seeing Zcash $ZEC rally after years in the wilderness? That's a win for the entire privacy space bringing attention to the privacy narrative. 🔒
But let's talk about $FIRO (formerly $XZC) — a privacy OG that's we have been quietly and tirelessly building:
🚀 The ONLY privacy coin with instant transactions via hybrid PoW/masternode architecture
🔬 Built Lelantus Spark — a zero-knowledge protocol so solid it influenced $XMR and $BEAM's development
🌉 Spark Assets hitting testnet soon: private asset transfers with hidden asset types + cross-chain bridging via @ConfidentialLyr
🏛️ Literally kept privacy alive on major exchanges — The Exchange Addresses idea is still used by $ZEC and $PIVX on Binance TODAY
🔄 Active DEX integrations: @KomodoPlatform, @BisonWallet, @BasicSwapDEX
9 years of continuous development. No exit scams. No pivots. Just building.
Privacy isn't a season — it's a necessity. And the tech being built right now will matter when people remember why they need it.

[Cypher Stack @cypher_stack]

Our Stack Attack concluded about a week back. It was a super fun time, and we got a ton of work done. Always fun and worth it to see everyone in person.

We actually did some super cool stuff that pushed privacy forward by dramatically improving our SLVer Bullet paper.

[Cypher Stack @cypher_stack]

Freeman (@IsomorphismThm) can't believe the breakthroughs we're making here.

[Cypher Stack @cypher_stack]

Brandon "surae" Goodell, our senior researcher breaks it down more here: https://t.co/kSLWGhFaMu

With a deeper dive coming on his account soon.

[Cypher Stack @cypher_stack]

We just updated our SLVer Bullet paper to be better and awesomer. Big thanks to @VeridiseInc for their review! We've also made things more optimized, and it's general enough that any eliptic curve verification procedure can be improved, which has implications beyond Monero.