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Marcel Keller

@mkskeller.bsky.social

460 followers 300 following 34 posts

Cryptographer who likes to implement multi-party computation and works for CSIRO's Data61. Views my own. 🏳️‍🌈🇨🇭🇦🇺 (he/him)

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Marcel Keller @mkskeller.bsky.social · Nov 16

Hello, world! Sending out-of-season vibes and more accessible multi-party computation from down under: github.com/data61/MP-SPDZ

GitHub - data61/MP-SPDZ: Versatile framework for multi-party computation

Versatile framework for multi-party computation. Contribute to data61/MP-SPDZ development by creating an account on GitHub.

github.com

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Reposted by Marcel Keller

Clément Canonne @ccanonne.github.io · 12d

📢 Come be my colleague: the School of Computer Science at 🇦🇺 #USyd is hiring!

Multiple tenure-track-equivalent positions across the board (including theory!), but with a specific focus on Cybersecurity and Trustworthy Digital Systems, and ML/AI.

⏰ Dec 1
usyd.wd105.myworkdayjobs.com/en-GB/USYD_E...

Multiple Continuing (Tenure-Track) Academic Positions, School of Computer Science, Faculty of Engineering, The University of Sydney

Join a thriving Faculty of Engineering at a University ranked amongst the world’s best teaching and research institutions Located in the heart of Sydney’s bustling inner west quarter, close to beaches...

usyd.wd105.myworkdayjobs.com

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Reposted by Marcel Keller

Spoon & Tamago @spoon-tamago.bsky.social · 22d

Japan once again wins the IG Nobel Prize, this year for research showing that painting a cow to look like a zebra decreases bug bites by close to 50%

www.asahi.com/sp/ajw/artic...

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Reposted by Marcel Keller

Tim Krief @timkrief.com · 25d

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Reposted by Marcel Keller

Deirdre Connolly¹ ² @durumcrustulum.com · 24d

a bug in this may have already been found

Deirdre Connolly¹ ² @durumcrustulum.com · 24d

not again

arxiv.org/pdf/2509.12341

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Marcel Keller @mkskeller.bsky.social · Sep 9

New campus, who dis?

Reposted by Marcel Keller

Ben Williamson @benpatrickwill.bsky.social · Sep 6

Academic authors, here's a peek into the black box of journal publishing from an journal editor if you can bear it:

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Marcel Keller @mkskeller.bsky.social · Sep 5

Your favourite remote castle just started skeeting. bsky.app/profile/dags...

bsky.app

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Reposted by Marcel Keller

Toby Murray @tobycmurray.bsky.social · Aug 23

This cartoon is so on the money and could as easily be about OpenAI as about any AI powered startup www.theguardian.com/commentisfre...

Are AI evangelists really on the money? | Fiona Katauskas

Not everyone’s keeping the faith

www.theguardian.com

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Reposted by Marcel Keller

mccurley.bsky.social @mccurley.bsky.social · Aug 14

Anyone who has been an IACR member in 2023-2026 should have received a link to respond to a survey about conferences and publishing. So far over 500 people have responded, but it will remain open for responses until Sept 12, 2025. I would also encourage people to use their forum invitations.

International Association for Cryptologic Research

A place to discuss matters related to IACR

discuss.iacr.org

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Marcel Keller @mkskeller.bsky.social · Aug 13

USENIX chair report: "six individuals appear as co-authors on 20 or more submissions, with two authors appearing on 36 and 39 submissions respectively. At such volume, it becomes difficult not to question the nature and depth of the contributions" www.usenix.org/sites/defaul...

www.usenix.org

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Reposted by Marcel Keller

michael veale @michae.lv · Aug 12

In a new digital twist to environmental individualisation of responsibility, the UK government is now advising people to “[d]elete old emails and pictures” in data centres to help with the current drought. www.gov.uk/government/n...

HOW TO SAVE WATER AT HOME
Install a rain butt to collect rainwater to use in the garden.

Fix a leaking toilet – leaky loos can waste 200-400 litres a day.

Use water from the kitchen to water your plants.

Avoid watering your lawn – brown grass will grow back healthy.

Turn off the taps when brushing teeth or shaving.

Take shorter showers.

Delete old emails and pictures as data centres require vast amounts of water to cool their systems.

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Reposted by Marcel Keller

Lance Fortnow @lance.fortnow.com · Aug 4

Springer publishes a P ≠ NP "proof" and Eric Allender has words to say.

blog.computationalco...

Some thoughts on journals, refereeing, and the P vs NP problem

A guest post by Eric Allender prompted by an (incorrect) P ≠ NP proof recently published in Springer Nature's Frontiers of Computer Scie...

blog.computationalcomplexity.org

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Reposted by Marcel Keller

ETH Zurich @ethz.ch · Jul 9

A milestone for open AI: ETH Zurich and EPFL will release a fully open multilingual language model, trained on CSCS’s “Alps” supercomputer. Built for the public good, this model promotes transparency, inclusion, and innovation.

Read more:

A language model built for the public good

ETH Zurich and EPFL will release a large language model (LLM) developed on public infrastructure. Trained on the “Alps” supercomputer at the Swiss National Supercomputing Centre (CSCS), the new LLM ma...

ethz.ch

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Marcel Keller @mkskeller.bsky.social · Aug 1

More MP-SPDZ users, Dagstuhl edition

Reposted by Marcel Keller

mccurley.bsky.social @mccurley.bsky.social · Jul 31

@researchorgs.bsky.social We started gathering ROR for affiliations in 2022, and it now provides a way to see where research in cryptology is being done. eprint.iacr.org/geo/index.html

As with all data collection, there are occasional errors.

Map view of Cryptology ePrint Archive statistics

eprint.iacr.org

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Marcel Keller @mkskeller.bsky.social · Jul 31

German SQL found in the first LNCS volume in the Dagstuhl library

Marcel Keller @mkskeller.bsky.social · Jul 31

German SQL found in the first LNCS volume in the Dagstuhl library

Reposted by Marcel Keller

Randall Munroe @xkcd.com · Jul 21

Replication Crisis

xkcd.com/3117/

4-panel comic. (1) [Person 1 with ponytail flanked by person with short hair and another person speaking into microphone at podium] PERSON 1: In the early 2010s, researchers found that many major scientific results couldn’t be reproduced. (2) PERSON 1: Over a decade into the replication crisis, we wanted to see if today’s studies have become more robust. (3) PERSON 1: Unfortunately, our replication analysis has found exactly the same problems that those 2010s researchers did. (4) [newspaper with image of speakers from previous panels] Headline: Replication Crisis Solved

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Reposted by Marcel Keller

Dulwich Quantum Computing @dulwichquantum.bsky.social · Jun 29

Last Friday Scott Aaronson gave a plenary talk at STOC titled "The Status of Quantum Speedups".
acm-stoc.org/stoc2025/key...
Here are his slides:
www.scottaaronson.com/talks/status...

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Reposted by Marcel Keller

Marc Lanctot @sharky6000.bsky.social · Jun 27

Uploaded (replaced) a paper to arXiv today for the first time in a while.. and discovered some new features! 🤩

✅ You can choose your compiler (incl. pdflatex)
✅ You can select the top-level TeX file
✅ There is a new "Review Files" stages that detects which files are unused!

🥰 and more: ... 1/3

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Reposted by Marcel Keller

Sam Jaques @sejaques.bsky.social · Jun 19

An out-of-schedule update to my quantum landscape chart: sam-jaques.appspot.com/quantum_land..., prompted by
@craiggidney.bsky.social 's new paper: arxiv.org/abs/2505.15917.

A startling jump (20x) in how easy quantum factoring can be!

Also: much improved web design!

A chart for quantum computers, of number of qubits versus error rate, on a logarithmic scale. Broadly it shows a large gap between current quantum computers in the bottom left, and a curve in the top right of the resources they need to break RSA.

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Marcel Keller @mkskeller.bsky.social · Jun 14

Researchers at the Chinese Academy of Sciences implemented OT on FPGAs and made MASCOT up to 600 times faster: ojs.ub.rub.de/index.php/TC...

POTA: A Pipelined Oblivious Transfer Acceleration Architecture for Secure Multi-Party Computation | IACR Transactions on Cryptographic Hardware and Embedded Systems

ojs.ub.rub.de

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Toby Murray @tobycmurray.bsky.social · Jun 14

The next time you need an example of a real world side channel try this wild article that explains how the absence of any pizza joints in the Pentagon complex creates a one-bit information leak www.theguardian.com/world/2025/j...

Pentagon pizza monitor predicted ‘busy night’ ahead of Israel’s attack on Iran

Low gay bar traffic and spike in pizza deliveries before strikes boost theory on Pentagon activity during invasions

www.theguardian.com

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Reposted by Marcel Keller

Randall Munroe @xkcd.com · Jun 12

Good Science

xkcd.com/3101/

5-panel comic. (1) [teacher with long hair next to whiteboard] TEACHER: I’m supposed to give you the tools to do good science. (2) [teacher addressing students] But what *are* those tools? Methodology is hard and there are so many ways to get incorrect results. What is the magic ingredient that makes for good science? (3) TEACHER: To figure it out, I ran a regression with all the factors people say are important: [embedded list in sub-panel, cut off at end] Outcome variable: correct scientific results. Predictors: collaboration; skepticism of others’ claims; questioning your own beliefs; trying to falsify hypotheses; checking citations; statistical rigor; blinded analysis; financial disclosure; open data (4) TEACHER: The regression says two ingredients are the most crucial: 1) genuine curiosity about the answer to a question, and 2) ammonium hydroxide. (5) STUDENT: Wait, why did *ammonia* score so high? How did it even get on the list? LONG HAIR: ...And now you’re doing good science!

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