@_alehmann

Crypto Prof @HPI_DE, working on provably secure cryptography and privacy-enhancing technologies. Private account.

 Berlin
hpi.de/lehmann/
Joined June 2015
  • Tweets148
  • Following137
  • Followers671
Have you recently defended your excellent dissertation or been a postdoc for some time? The joint Digital Engineering Faculty of HPI and the @unipotsdam invites applications for six #professorships in #ComputerScience! 💡Apply now until September 15 at: uni-potsdam.de/fileadmin/pro…
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Anja Lehmann retweeted
Bart Preneel@bpreneel14 Jul 2023
More than 300 scientists from 32 countries have signed an open letter criticizing the EU proposal for regulation to detect Child Sexual Abuse Material tinyurl.com/CSAScientistsLet… TL;DR ineffective; risk for function creep & abuse; violates human rights -collab. w @carmelatroncoso

CSA Academia Open Letter

The text below is an open letter on the position of scientists and researchers on the EU’s proposed Child Sexual Abuse Regulation. Signatures on 31 July @ 12pm Signatories: 465 Countries: 38 For...

docs.google.com
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Anja Lehmann retweeted
Jiska@naehrdine29 Jun 2023
Next week, I'll have my own research group at @HPI_DE 🎉🎉
Hasso-Plattner-Institut@HPI_DE29 Jun 2023
IT-Sicherheitsforscherin Dr. Jiska Classen wechselt ans HPI👏 Ab dem 1. Juli wird die Expertin für Sicherheit und #Datenschutz die Forschungsgruppe "#Cybersecurity – Mobile & Wireless" im Research Cluster #Security leiten. Wir wünschen einen guten Start! 💡hpi.de/news/jahrgaenge/2023/…
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And the yearly real time commentary on @RealWorldCrypto has started... Hats off to Deirdre for this great contribution to the community
Deirdre Connolly¹@durumcrustulum27 Mar 2023
LIVE FROM TOKYO, IT'S #REALWORLDCRYPTO
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In-person registrations for RWC 2023 are nearly at venue capacity. So if you are planning to attend RWC 2023, register now. Please do not assume that you can register on-site: this is most likely not going to be possible.
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Anja Lehmann retweeted
Cryspen@CryspenHQ15 Dec 2022
We are hiring! We are looking for a Cryptography Engineer and a Software Verification Engineer to build high assurance cryptography (tools, protocols, and applications). join.com/companies/cryspen
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NIST @NISTcyber is having a virtual event on privacy-preserving authentication on November 21st at 9am EST. @FBaldimtsi, @julian_loss and I will give talks on state-of-the-art cryptography in this area, followed by a panel discussion. Please come! csrc.nist.gov/events/2022/st…

STPPA (series of talks) Event #4 | CSRC

Featured topics: anonymous credentials, blind signatures, private authentication. Structure: welcome; three invited talks; panel conversation. Date and time: November 21st, 2022, 09:00–12:30 EST...

csrc.nist.gov
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**23 April 2023** save the date! CROSSFYRE ’23, an event celebrating those who identify as women in Crypto, is coming soon as an affiliated event at Eurocrypt ’23 in Lyon, France! website: sites.google.com/view/crossf…
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The Real World Crypto 2023 talk proposal server is now open: submit.iacr.org/rwc2023/ Deadline for proposals: Thursday 10 Nov 2022 11:59:59am UTC. Advice for submitters: rwc.iacr.org/talks.html Send us your great #realworldcrypto ideas!
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Anja Lehmann retweeted
sofía celi@claucece28 Sep 2022
Today, we are publishing several practically-exploitable cryptographic vulnerabilities in the Matrix (@matrixdotorg) standard and their flagship client Element, with Daniel Jones (@djwj_), Benjamin Dowling (@dowlingbj) and Martin R. Albrecht (@martinralbrecht).
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Blog post on the SIDH attack ellipticnews.wordpress.com/2…

Breaking supersingular isogeny Diffie-Hellman (SIDH)

The paper An efficient key recovery attack on SIDH by Wouter Castryck and Thomas Decru is a major breakthrough in isogeny cryptanalysis. This relates to the SIDH protocol by Jao and De Feo, and the…

ellipticnews.wordpress.com
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As we prepare for the possible assault of a future quantum computer, NIST has chosen the first group of tools for our post-quantum cryptographic standard: 🔒 CRYSTALS-Kyber 🔒 CRYSTALS-Dilithium 🔒 FALCON 🔒 Sphincs+ Learn more: nist.gov/news-events/news/20…
Illustrated tree with algorithms inside its foliage and along its trunk. A cube with lines across it. A circle showing a close-up view of the intersection of lines on the cube.

ALT Illustrated tree with algorithms inside its foliage and along its trunk. A cube with lines across it. A circle showing a close-up view of the intersection of lines on the cube.

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Anja Lehmann retweeted
kennyog@kennyog21 Jun 2022
MEGA - Malleable Encryption Goes Awry: I'm excited to share details of some new research on the security of @MEGAprivacy. Details at: mega-awry.io (1/28)
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This document is the most terrifying thing I’ve ever seen. It is proposing a new mass surveillance system that will read private text messages, not to detect CSAM, but to detect “grooming”. Read for yourself.
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Future Work – #WomenInTech Konferenz 📆 12. und 13. Mai 📆 Wir freuen uns auf die erste #SheTransformsIT Women in Tech Konferenz mit dem @HPI_DE🎉 #Chancengleichheit in der IT-Arbeitswelt braucht einen #Kulturwandel. Jetzt anmelden 👉ow.ly/eIy050IGkeS
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The "early bird" reduced registration fee deadline for RWC 2022 is coming up in a week. Don't miss out! rwc.iacr.org/2022/registrati…
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Unbelievable 🕊️ 500.000 people have come together in #Berlin to protest against the war in #Ukraine !! #NoWAR
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Anja Lehmann retweeted
IACR@IACR_News25 Feb 2022
#ePrint Breaking Rainbow Takes a Weekend on a Laptop: W Beullens ia.cr/2022/214
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Ugh god. Serious flaws in the way Samsung phones encrypt key material in TrustZone and it’s embarrassingly bad. They used a single key and allowed IV re-use. eprint.iacr.org/2022/208
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