John Schanck

I only skimmed the paper, but it looks like the gate takes 225μs. So you're looking at a surface code cycle time of a couple ms and a <1 kHz logical clock rate. Factoring a 2048 bit modus would take hundreds, maybe thousands, of hours.

Members of the Unpresidented Brass Band were bull rushed & brutalized in the middle of playing "Ghostbusters." One was sent to the hospital and another tackled, arrested, and taken across state lines where she is still being detained.

Read more about Sunday's protest in Portland here:

Portland City Council member Angelita Morillo humorously criticizes Secretary of Homeland Security Kristi Noem, leading to laughter from CNN's Boris Sanchez.

Incredibly alarming—after the whole ridiculous antifa roundtable at the White House, as Mark was moving with his family to Europe after threats…

pamela-fitzsimmons.bsky.... @pamela-fitzsimmons.bsky.soc... Yes. Sadly, those are what's left of Portland's bragging rights -- great food, beer, wine, coffee and donuts. Oh, there's also cannabis and sex shows.

I love it when people try to say bad stuff about Portland but we just end up sounding rad as fuck.

So funny that Noem's trip is being spoiled by perfect weather. It might be the nicest day of the year in this beautiful city.

Also, you'll see this is a screenshot by a video from a guy named David Medina. Medina was convicted for his role in the Jan. 6 insurrection and was later pardoned by Trump. He has since rebranded himself as a Trump-aligned social media influencer.

More here: www.opb.org/article/2025...

bsky.app/profile/coac...

Judge: That's what I'll do. Prohibit federalization or deployment of any NG troops into Oregon. For all reasons in prior opinion. Deployment of federalized military is ultra vires and contrary to law, violating Title 10, section 12406. I also find it's likely that defendants violate 10th Amendment.

DOJ: CA NG is already federalized

Judge: You are an officer of the court. Do you think this is an appropriate way to deal with my order? Appropriate way of dealing with ruling you disagree with?

DOJ: Well, I'm not a policy maker

Judge: You're a lawyer

HAPPENING NOW: Judge Karin Immergut hears emergency arguments as California and Oregon seek to block President Trump's deployment of federalized California National Guard troops to Portland. 🧵

What Happens When Socialists Are in Charge? Portland Offers a Glimpse.

Not only does this story get a number of basic facts wrong, it doesn’t take time to actually explore why Portlanders elected these folks. Coming in with a pre-baked PDX story to fit a NYT narrative about NYC is harmful, especially at this moment.

Oops! NYT seems to have accidentally published an editor's comment. There's no way to read "Too extreme. Too inexperienced. An absolute disaster." as anything other than a comment on the piece and its authors.

the president of the united states wants to use the american military to kill american citizens on american soil. that's the whole story!

Findings of Fact & Conclusions of Law – #261 in American Association of University Professors v. Rubio (D. Mass., 1:25-cv-10685) – CourtListener.com Judge William G. Young: ORDER entered. FINDINGS OF FACT AND RULINGS OF LAW, PURSUANT TO FED. R. CIV. P. 52(A)(Sonnenberg, Elizabeth) (Additional attachment(s) added on 9/30/2025: # 1 Main Document) (J...

BREAKING: WE WON!!!
💥 💥 💥

Federal Judge William G. Young ruled today in our lawsuit against the Trump administration that the policy of arresting, detaining, & deporting noncitizen students & faculty members for their pro-Palestinian advocacy violates the 1st Amendment.

Full ruling here:

Exclusive: ICE reactivated its $2 million contract with Israeli spyware firm Paragon, following its acquisition by U.S. capital The cyber division of ICE's Homeland Security Investigations on Saturday quietly lifted a stop-work order put into place by the Biden administration in October.

NEW: Mercenary spyware is coming to the US.

ICE just quietly unsuspended their contract with spyware maker #Paragon.

Remember them? Caught earlier this year being used to hack Italian journalists.

This is bad, let's talk about how we got here 1/

jackpoulson.substack.com/p/exclusive-...

Zero Knowledge Proofs Alone Are Not a Digital ID Solution to Protecting User Privacy In the past few years, governments across the world have rolled out digital identification options, and now there are efforts encouraging online companies to implement identity and age verification re...

It is disappointing to see Google and others pushing zero-knowledge proofs (ZKPs) for age verification. As EFF points out, ZKPs aren't enough to protect our privacy, and without a federal privacy law, they're just more fuel for data brokers.

Some additional thoughts 🧵

www.eff.org/deeplinks/20...

We don’t talk often enough about the Superman issue where, fed up with pedestrian deaths from car collisions, he sets out to try and destroy every car in the city.

I’m begging people to realize that there is a link between these big tech investors, Andreesen in particular, their hideous racist politics, and the fact that so many of them are using vast fortunes and investments to prop up surveillance tech companies that blanket both cities and borders.

A-grade trolling in the intro: "Since factorization of 15 = 3·5 by a quantum computer, society is taking the threat of quantum computers more and more seriously."

Computer-vision research powers surveillance technology - Nature An analysis of research&nbsp;papers and citing patents indicates the extensive ties between computer-vision research and surveillance.

New paper hot off the press www.nature.com/articles/s41...

We analysed over 40,000 computer vision papers from CVPR (the longest standing CV conf) & associated patents tracing pathways from research to application. We found that 90% of papers & 86% of downstream patents power surveillance

1/

generative AI is the most socially harmful technology since the automobile, but at least no one has to write shell scripts anymore

A paragraph from Boaz Barak's recent NY Times op-ed: 'You might think I can avoid politics in the classroom only because I am a computer scientist. This is not the case. Faculty members who are determined enough can inject politics into any topic, and after all, computer science has brought huge and significant changes to society. The interaction of computer science and policy sometimes arises in my classes, and I make sure to present multiple perspectives. When I teach cryptography, a topic at the heart of the tension between privacy and security, I share with my students writings by former National Security Agency officials as well as "The Crypto Anarchist Manifesto."'

We teach a broad range of political perspectives here at Harvard... ranging from those of *checks notes*... center-right military officials to... *squints* ultra-right market absolutists, and you should be more grateful for that.

YouTube video by Real World Crypto RWC 2025

The data in the paper is a few months out-of-date at this point. I gave some more recent figures in my RWC 2025 talk.

New paper(!) on the "clubcard" data structure that we're using for WebPKI revocation checks in Firefox.

A clubcard is a membership test for an r element subset of an n element set. Size is ~1.13 log(n choose r) bits. Or (better!) ~1.13 Σ log(n_i choose r_i) where i indexes blocks of a partition.

Next up, Toward revocation checking that works, by John Schanck

#realworldcrypto

Real World Crypto Videos of Real World Crypto conference talks. See https://www.realworldcrypto.com for more information.

Ready to revoke outdated cert habits? #realworldcrypto2025 Day 2 Session 3, John Schanck aims to fix revocation checks, while Mari Galicer et al. audit key transparency. Join us to keep your ‘trust anchors’ firmly in place. Can't join us? Stream live here: www.youtube.com/@RealWorldCr...