Cryptography Tier List

Security Cryptography Whatever

#Tech #Deirdre Connolly, Thomas Ptacek, David Adrian #David Adrian #Deirdre Connolly #Thomas Ptacek #Security #Cryptography #Whatever #Science #Math #News #Tech News

1:00:36

Do you have fond childhood memories of summer camp? For a chance at $250,000, campers must compete in a series of summer camp-themed challenges to prove that they are unbeatable, unhateable, and unbreakable. Host Chris Burns is joined by the multi-talented comedian Dana Moon to recap the first five episodes of season one of Battle Camp . Plus, Quori-Tyler (aka QT) joins the podcast to dish on the camp gossip, team dynamics, and the Watson to her Sherlock Holmes. Leave us a voice message at www.speakpipe.com/WeHaveTheReceipts Text us at (929) 487-3621 DM Chris @FatCarrieBradshaw on Instagram Follow We Have The Receipts wherever you listen, so you never miss an episode. Listen to more from Netflix Podcasts.…

about a year ago 19:28

MP3•Episode home

(NSFW) Three AI-generated guests rank cryptography things into a tier list. Play along at home and make your own tier list: https://tiermaker.com/create/cryptography-15683166
This episode is definitely not safe for work and definitely a parody. Do not base your decision in the 2024 election off of this podcast episode. No campaigns have endorsed this podcast.

"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)

Chapters

1. Cryptography Tier List (00:00:00)

2. Modern Cryptography Tier List Discussion (00:00:04)

3. Ranking Cryptographic Concepts and Algorithms (00:11:24)

54 episodes

Cryptography Tier List

Security Cryptography Whatever

45 subscribers

published about a year ago

MP3•Episode home

"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)

Chapters

1. Cryptography Tier List (00:00:00)

2. Modern Cryptography Tier List Discussion (00:00:04)

3. Ranking Cryptographic Concepts and Algorithms (00:11:24)

54 episodes

#Tech #Deirdre Connolly, Thomas Ptacek, David Adrian #David Adrian #Deirdre Connolly #Thomas Ptacek #Security #Cryptography #Whatever #Science #Math #News #Tech News

All episodes

1
Picking Quantum Resistant Algorithms 14:56

8 weeks ago14:56

14:56

Migrating the US government to quantum-resistant cryptography is hard, luckily the gamer presidents are on it. This episode is extremely not safe for work, nor does it reflect the political opinions of, well, anybody. "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Apple Pulls Advanced Data Protection in the UK with Matt Green and Joe Hall 48:30

12 weeks ago48:30

48:30

Apple has pulled the availability of their opt-in iCloud end-to-end encryption feature, called Advanced Data Protection, in the UK. This doesn't only affect UK Apple users, however. To help us make sense of this surprising move from the fruit company, we got Matt Green, Associate Professor at Johns Hopkins, and Joe Hall, Distinguished Technologist at the Internet Society, on the horn. Recorded Saturday February 22nd, 2025. Transcript: https://securitycryptographywhatever.com/2025/02/24/apple-pulls-adp-in-uk/ Watch episode on YouTube: https://youtu.be/LAn_yOGUkR0 Links: - https://www.lawfaremedia.org/article/apples-cloud-key-vault-and-secure-law-enforcement-access - https://www.androidcentral.com/how-googles-backup-encryption-works-good-bad-and-ugly - https://gdpr.eu/right-to-be-forgotten/ - https://www.legislation.gov.uk/id/ukpga/2024/9 - https://www.nytimes.com/2021/05/17/technology/apple-china-censorship-data.html - https://en.wikipedia.org/wiki/Salt_Typhoon - Salt Typhoon: https://www.cisa.gov/news-events/news/strengthening-americas-resilience-against-prc-cyber-threats - https://www.bloomberg.com/news/articles/2025-02-21/apple-removes-end-to-end-encryption-feature-from-uk-after-backdoor-order - https://support.apple.com/en-us/102651 "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Cryptanalyzing LLMs with Nicholas Carlini 1:20:42

16 weeks ago1:20:42

1:20:42

'Let us model our large language model as a hash function—' Sold. Our special guest Nicholas Carlini joins us to discuss differential cryptanalysis on LLMs and other attacks, just as the ones that made OpenAI turn off some features, hehehehe. Watch episode on YouTube: https://youtu.be/vZ64xPI2Rc0 Transcript: https://securitycryptographywhatever.com/2025/01/28/cryptanalyzing-llms-with-nicholas-carlini/ Links: - https://nicholas.carlini.com - “Stealing Part of a Production Language Model”: https://arxiv.org/pdf/2403.06634 - ‘Why I attack"’: https://nicholas.carlini.com/writing/2024/why-i-attack.html - “Cryptanalytic Extraction of Neural Network Models”, CRYPTO 2020: https://arxiv.org/abs/2003.04884 - “Stochastic Parrots”: https://dl.acm.org/doi/10.1145/3442188.3445922 - https://help.openai.com/en/articles/5247780-using-logit-bias-to-alter-token-probability-with-the-openai-api - https://community.openai.com/t/temperature-top-p-and-top-k-for-chatbot-responses/295542 - https://opensource.org/license/mit - https://github.com/madler/zlib - https://ai.meta.com/blog/yann-lecun-ai-model-i-jepa/ - https://nicholas.carlini.com/writing/2024/how-i-use-ai.html "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Biden’s Cyber-Everything Bagel with Carole House 57:14

17 weeks ago57:14

57:14

Just a few days before turning off the lights, the Biden administration dropped a huge cybersecurity executive order including a lot of good stuff, that hopefully [cross your fingers, knock wood, spin around three times and spit] will last into future administrations. We snagged some time with Carole House, outgoing Special Advisor and Acting Senior Director for Cybersecurity and Critical Infrastructure Policy, National Security Council in the Biden-Harris White House, to give us a brain dump. And now due to popular demand, with video of our actual human¹ faces! https://youtu.be/Pqw0W2crQiM Transcript: https://securitycryptographywhatever.com/2025/01/20/bidens-cyber-everything-bagel-carole-house/ Links: - https://www.federalregister.gov/d/2025-01470 - https://www.wired.com/story/biden-executive-order-cybersecurity-ai-and-more/ - 2022 EO: https://archive.ph/hvzWd - 2023 EO: https://www.whitehouse.gov/wp-content/uploads/2023/06/M-23-16-Update-to-M-22-18-Enhancing-Software-Security-1.pdf - 2021 EO: https://www.federalregister.gov/documents/2021/05/17/2021-10460/improving-the-nations-cybersecurity - NIST SSDF: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-218.pdf - https://www.federalregister.gov/documents/2015/04/02/2015-07788/blocking-the-property-of-certain-persons-engaging-in-significant-malicious-cyber-enabled-activities - IEEPA: https://www.govinfo.gov/content/pkg/USCODE-2023-title50/pdf/USCODE-2023-title50-chap35-sec1701.pdf ¹ Actual human faces not guaranteed in all cases "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Quantum Willow with John Schanck and Samuel Jacques 53:36

21 weeks ago53:36

53:36

THE QUANTUM COMPUTERS ARE COMING...right? We got Samuel Jacques and John Schanck at short notice to answer that question plus a bunch of other about error correcting codes, logical qubits, T-gates, and more about Google's new quantum computer Willow. Transcript: https://securitycryptographywhatever.com/2024/12/18/quantum-willow Links: - https://blog.google/technology/research/google-willow-quantum-chip/ - https://research.google/blog/making-quantum-error-correction-work/ - https://blog.google/technology/google-deepmind/alphaqubit-quantum-error-correction/ - https://www.nature.com/articles/s41586-024-08449-y - Sam’s ‘Landscape of Quantum Computing’ chart: https://sam-jaques.appspot.com/quantum\_landscape\_2024 - The above, originally published in 2021: https://sam-jaques.appspot.com/quantum\_landscape - https://sam-jaques.appspot.com - https://jmschanck.info/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Dual_EC_DRBG with Justin Schuh and Matthew Green 1:07:45

23 weeks ago1:07:45

1:07:45

Nothing we have ever recorded on SCW has brought so much joy to David. However, at several points during the episode, we may have witnessed Matthew Green's soul leave his body. Our esteemed guests Justin Schuh and Matt Green joined us to debate whether `Dual_EC_DRBG` was intentionally backdoored by the NSA or 'just' a major fuckup. Transcript: https://securitycryptographywhatever.com/2024/12/07/dual-ec-drbg Links: - Dicky George at InfiltrateCon 2014, 'Life at Both Ends of the Barrel - An NSA Targeting Retrospective': [https://youtu.be/qq-LCyRp6bU?si=MyTBKomkIVaxSy1Q](https://youtu.be/qq-LCyRp6bU?si=MyTBKomkIVaxSy1Q) - Dicky George: [https://www.nsa.gov/Press-Room/Digital-Media-Center/Biographies/Biography-View-Page/Article/3330261/richard-dickie-george/](https://www.nsa.gov/Press-Room/Digital-Media-Center/Biographies/Biography-View-Page/Article/3330261/richard-dickie-george/) - NYTimes on Sigint Enabling Project: [https://archive.nytimes.com/www.nytimes.com/interactive/2013/09/05/us/documents-reveal-nsa-campaign-against-encryption.html](https://archive.nytimes.com/www.nytimes.com/interactive/2013/09/05/us/documents-reveal-nsa-campaign-against-encryption.html) - On the Practical Exploitability of Dual EC in TLS Implementations: [https://www.usenix.org/system/files/conference/usenixsecurity14/sec14-paper-checkoway.pdf](https://www.usenix.org/system/files/conference/usenixsecurity14/sec14-paper-checkoway.pdf) - Wired - Researchers Solve Juniper Backdoor Mystery; Signs Point to NSA [https://www.wired.com/2015/12/researchers-solve-the-juniper-mystery-and-they-say-its-partially-the-nsas-fault/](https://www.wired.com/2015/12/researchers-solve-the-juniper-mystery-and-they-say-its-partially-the-nsas-fault/) - ProPublica - Revealed: The NSA's Secret Campaign to Crack, Undermine Internet Security [https://www.propublica.org/article/the-nsas-secret-campaign-to-crack-undermine-internet-encryption](https://www.propublica.org/article/the-nsas-secret-campaign-to-crack-undermine-internet-encryption) - DDoSecrets - Sigint Enabling Project: [https://data.ddosecrets.com/Snowden%20archive/sigint-enabling-project.pdf](https://data.ddosecrets.com/Snowden%20archive/sigint-enabling-project.pdf) - IAD: [https://www.iad.gov/](https://www.iad.gov/) - Ars Technica - “Unauthorized code” in Juniper firewalls decrypts encrypted VPN traffic: [https://web.archive.org/web/20151222023311/http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/](https://web.archive.org/web/20151222023311/http://arstechnica.com/security/2015/12/unauthorized-code-in-juniper-firewalls-decrypts-encrypted-vpn-traffic/) - 2015 IMPORTANT JUNIPER SECURITY ANNOUNCEMENT: [https://web.archive.org/web/20151221171526/http://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554](https://web.archive.org/web/20151221171526/http://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554) - Extended Random Values for TLS: [https://datatracker.ietf.org/doc/html/draft-rescorla-tls-extended-random-00](https://datatracker.ietf.org/doc/html/draft-rescorla-tls-extended-random-00) - The Art of Software Security Assessment: [https://www.amazon.com/Art-Software-Security-Assessment-Vulnerabilities/dp/0321444426](https://www.amazon.com/Art-Software-Security-Assessment-Vulnerabilities/dp/0321444426) "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
A Little Bit of Rust Goes a Long Way with Android's Jeff Vander Stoep 1:13:55

31 weeks ago1:13:55

1:13:55

You may not be rewriting the world in Rust, but if you follow the findings of the Android team and our guest Jeff Vander Stoep, you'll drive down your memory-unsafety vulnerabilities more than 2X below the industry average over time! 🎉 Transcript: https://securitycryptographywhatever.com/2024/10/15/a-little-bit-of-rust-goes-a-long-way/ Links: - https://security.googleblog.com/2024/09/eliminating-memory-safety-vulnerabilities-Android.html - “Safe Coding”: https://dl.acm.org/doi/10.1145/3651621 - “effectiveness of security design”: https://docs.google.com/presentation/d/16LZ6T-tcjgp3T8_N3m0pa5kNA1DwIsuMcQYDhpMU7uU/edit#slide=id.g3e7cac054a_0_89 - https://security.googleblog.com/2024/02/improving-interoperability-between-rust-and-c.html - https://github.com/google/crubit - https://github.com/google/autocxx - https://en.wikipedia.org/wiki/Stagefright_(bug) - https://security.googleblog.com/2021/04/rust-in-android-platform.html - https://chromium.googlesource.com/chromium/src/+/master/docs/security/rule-of-2.md - https://www.usenix.org/conference/usenixsecurity22/presentation/alexopoulos -https://kb.meinbergglobal.com/kb/time_sync/ntp/ntp_vulnerabilities_reported_2023-04 - https://blog.isosceles.com/the-legacy-of-stagefright/ - https://research.google/pubs/secure-by-design-googles-perspective-on-memory-safety/ - https://www.youtube.com/watch?v=QrrH2lcl9ew - https://source.android.com/docs/setup/build/rust/building-rust-modules/overview - https://github.com/rust-lang/rust-bindgen - https://security.googleblog.com/2021/06/rustc-interop-in-android-platform.html "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Campaign Security with [REDACTED] 1:23:39

31 weeks ago1:23:39

1:23:39

With the 2024 United States Presidential Election right around the corner, we talk to an unnamed guest who has worked on cybersecurity for political campaigns in the United States since 2004. We recorded this in late August, 2024. Transcript: https://securitycryptographywhatever.com/2024/10/13/campaign-security/ Links: - Active Measures by Thomas Rind: https://us.macmillan.com/books/9780374287269/activemeasures - Aurora: https://en.wikipedia.org/wiki/Operation\_Aurora - Google APP announcement, October 2017: https://www.wired.com/story/google-advanced-protection-locks-down-accounts/ - XXD: https://linux.die.net/man/1/xxd - Adobe Reader October 2016 Security Update: https://helpx.adobe.com/security/products/acrobat/apsb16-33.html "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Telegram with Matthew Green 1:04:04

36 weeks ago1:04:04

1:04:04

We finally have an excuse to tear down Telegram! Their CEO got arrested by the French, apparently not because the cryptography in Telegram is bad, but special guest Matt Green joined us to talk about how the cryptography is bad anyway, and you probably shouldn't use Telegram as a secure messenger of any kind! Transcript: https://securitycryptographywhatever.com/2024/09/06/telegram Links: - https://blog.cryptographyengineering.com/2024/08/25/telegram-is-not-really-an-encrypted-messaging-app/ - Lavabit / Ladar Levinson: https://en.wikipedia.org/wiki/Lavabit - Pavel Durov indictment statement from French authorities: https://www.tribunal-de-paris.justice.fr/sites/default/files/2024-08/2024-08-28%20-%20CP%20TELEGRAM%20mise%20en%20examen.pdf - MTProto 2.0 protocol spec: https://core.telegram.org/api/end-to-end - https://words.filippo.io/dispatches/telegram-ecdh/ - MTProto 1.0 (old no longer used): - https://web.archive.org/web/20131220000537/https://core.telegram.org/api/end-to-end#key-generation - OTR: https://otr.cypherpunks.ca/otr-wpes.pdf - AES and sha2 used in ‘Infinite Garble Extension’ mode: https://eprint.iacr.org/2015/1177.pdf - Four Attacks and a Proof for Telegram: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9833666 - History of Telegram e2ee chats availability: https://en.wikipedia.org/wiki/Telegram_(software)#Architecture - https://securitycryptographywhatever.com/2023/01/27/threema/ - https://securitycryptographywhatever.com/2022/11/02/Matrix-with-Martin-Albrecht-Dan-Jones/ - https://en.wikipedia.org/wiki/Matrix_(protocol), introduced in September 2014 "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Summertime Sadness 57:26

42 weeks ago57:26

57:26

Are you going to be in Vegas during BlackHat / DEF CON? We're hosting a mixer, sponsored by Observa ! We have limited capacity, so please only register if you can actually come. Location details are in the confirmation email. Tickets will be released in batches, so if you get waitlisted, there's a good chance you still get in. Looking forward to seeing you in Vegas! Ticket Link: https://www.eventbrite.com/e/scwpod-vegas-2024-tickets-946939099337 We talk about CrowdStrike in this episode, but we know we made some mistakes: The sys files may be code in addition to data. The bug might be bigger than "just" a null pointer exception. Luckily, none of that is actually relevant to the main issues we discuss. Show page: https://securitycryptographywhatever.com/2024/07/24/summertime-sadness/ Other Links: https://csrc.nist.gov/projects/post-quantum-cryptography/post-quantum-cryptography-standardization https://dadrian.io/blog/posts/pqc-signatures-2024/ https://dadrian.io/blog/posts/cto/ https://www.blackhat.com/us-24/briefings/schedule/ https://terrapin-attack.com/ https://www.youtube.com/watch?v=-AqayGm0_pw More like ClownStrike, amirite? "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Zero Day Markets with Mark Dowd 1:25:49

47 weeks ago1:25:49

1:25:49

We have Mark Dowd on, founder of Aziumuth Security and one of the authors of The Art of Software Security Assessment, to talk about the market for zero day vulnerabilities, and how mitigations affect monetizing offensive security work. Transcript: https://securitycryptographywhatever.com/2024/06/24/mdowd/ Links: https://www.azimuthsecurity.com/ https://www.vigilantlabs.com/ https://github.com/mdowd79/presentations/blob/main/bluehat2023-mdowd-final.pdf https://i.blackhat.com/USA21/Wednesday-Handouts/us-21-Hack-Different-Pwning-IOS-14-With-Generation-Z-Bug-wp.pdf https://i.blackhat.com/USA-19/Wednesday/us-19-Shwartz-Selling-0-Days-To-Governments-And-Offensive-Security-Companies.pdf "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
ekr 1:48:16

51 weeks ago1:48:16

1:48:16

iykyk Transcript: https://securitycryptographywhatever.com/2024/05/25/ekr/ Links: - https://hovav.net/ucsd/dist/draft-shacham-tls-fasttrack-00.txt - https://crypto.stanford.edu/~dabo/pubs/papers/fasttrack.pdf - https://datatracker.ietf.org/doc/html/rfc8446 - SoK: SCT Auditing in Certificate Transparency: https://arxiv.org/pdf/2203.01661 - A hard look at Certificate Transparency, Part I: Transparency Systems: https://educatedguesswork.org/posts/transparency-part-1/ - A hard look at Certificate Transparency: CT in Reality: https://educatedguesswork.org/posts/transparency-part-2/ - E2EE on the web: is the web really that bad? https://emilymstark.com/2024/02/09/e2ee-on-the-web-is-the-web-really-that-bad.html - Launching Default End-to-End Encryption on Messenger: https://about.fb.com/news/2023/12/default-end-to-end-encryption-on-messenger/ - ekr's newsletter: https://educatedguesswork.org - Over 25 years of ekr RFCs: https://www.rfc-editor.org/search/rfc_search_detail.php?sortkey=Date&sorting=DESC&page=All&author=rescorla&pubstatus[]=Any&pub_date_type=any Subscribe to his newsletter at https://educatedguesswork.org/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
STIR/SHAKEN with Paul Grubbs and Josh Brown 1:01:47

1 year ago1:01:47

1:01:47

Josh Brown and Paul Grubbs join us to describe how those damned spam calls work, and how STIR/SHAKEN is supposed to try to stop them, but have other privacy and security implications as well. Transcript: https://securitycryptographywhatever.com/2024/04/30/stir-shaken/ Links: - https://iacr.org/submit/files/slides/2024/rwc/rwc2024/98/slides.pdf - https://www.youtube.com/watch?v=3trxXF0-fRU - Paul Grubbs: https://web.eecs.umich.edu/~paulgrub/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Cryptography Tier List 19:28

1 year ago19:28

19:28

(NSFW) Three AI-generated guests rank cryptography things into a tier list. Play along at home and make your own tier list: https://tiermaker.com/create/cryptography-15683166 This episode is definitely not safe for work and definitely a parody. Do not base your decision in the 2024 election off of this podcast episode. No campaigns have endorsed this podcast. "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

1
Post-Quantum iMessage with Douglas Stebila 55:34

1 year ago55:34

55:34

Apple iMessage is getting a big upgrade! Not only are they rolling out ratcheting, but they’re going post-quantum, AND they’re doing post-quantum ratcheting! Douglas Stebila joined us to talk about his security analysis of the new PQ3 protocol update and not indulge our wild Apple speculations: Transcript: https://securitycryptographywhatever.com/2024/03/03/post-quantum-imessage-with-douglas-stebila/ Links: - https://security.apple.com/blog/imessage-pq3/ - Security analysis of the iMessage PQ3 protocol https://security.apple.com/assets/files/A_Formal_Analysis_of_the_iMessage_PQ3_Messaging_Protocol_Basin_et_al.pdf - Ratcheting design: https://eprint.iacr.org/2024/220.pdf - When Messages are Keys: Is HMAC a dual-PRF?: https://eprint.iacr.org/2023/861.pdf - Real World Deniability in Messaging: https://eprint.iacr.org/2023/403.pdf - Padmé: https://www.petsymposium.org/2019/files/papers/issue4/popets-2019-0056.pdf - Max Headroom: https://www.youtube.com/watch?v=cYdpOjletnc - Extended Canetti-Krawczyk model: https://iacr.org/archive/eurocrypt2001/20450451.pdf - Douglas Stebila: https://www.douglas.stebila.ca/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
High-assurance Post-Quantum Crypto with Franziskus Kiefer and Karthik Bhargavan 56:13

1 year ago56:13

56:13

We welcome Franziskus and Karthik from Cryspen to discuss their new high-assurance implementation of ML-KEM (the final form of Kyber), discussing how formal methods can both help provide correctness guarantees, security assurances, and performance wins for your crypto code! Transcript: https://securitycryptographywhatever.com/2024/01/29/high-assurance-kyber/ Links: - https://cryspen.com/post/ml-kem-implementation/ - https://github.com/cryspen/libcrux/ - https://github.com/formosa-crypto/libjade - https://cryspen.com/post/pqxdh/ - https://eprint.iacr.org/2023/1933.pdf - Franziskus Kiefer: https://franziskuskiefer.de/ - Karthik Bhargavan: https://bhargavan.info/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Encrypting Facebook Messenger with Jon Millican and Timothy Buck 59:35

1 year ago59:35

59:35

Facebook Messenger has finally been end-to-end encrypted, a couple of years after Mark Zuckerberg announced it! Plus Instagram DMs are trialing ephemeral E2EE DMs too! We invited on Jon Millican and Timothy Buck from Meta to discuss this major cross-platform endeavor, and how David Bowie fits into their personal Labyrinth. Transcript: https://securitycryptographywhatever.com/2023/12/28/e2ee-fb-messenger/ Links: - https://www.facebook.com/notes/2420600258234172 - https://eprint.iacr.org/2022/1044.pdf - https://engineering.fb.com/2023/12/06/security/building-end-to-end-security-for-messenger/ - https://www.theverge.com/2023/12/6/23991501/facebook-messenger-default-end-to-end-encryption-meta - https://www.threads.net/@jonmillican/post/C0kQPAyoFpr - https://engineering.fb.com/wp-content/uploads/2023/12/MessengerEnd-to-EndEncryptionOverview_12-6-2023.pdf - https://engineering.fb.com/wp-content/uploads/2023/12/TheLabyrinthEncryptedMessageStorageProtocol_12-6-2023.pdf - https://engineering.fb.com/2022/03/10/security/code-verify/ - https://chrome.google.com/webstore/detail/code-verify/llohflklppcaghdpehpbklhlfebooeog "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Attacking Lattice-based Cryptography with Martin Albrecht 57:20

2 years ago57:20

57:20

Returning champion Martin Albrecht joins us to help explain how we measure the security of lattice-based cryptosystems like Kyber and Dilithium against attackers. QRAM, BKZ, LLL, oh my! Transcript: https://securitycryptographywhatever.com/2023/11/13/lattice-attacks/ Links: - https://pq-crystals.org/kyber/index.shtml - https://pq-crystals.org/dilithium/index.shtml - https://eprint.iacr.org/2019/930.pdf - https://en.wikipedia.org/wiki/Short_integer_solution_problem - Frodo: https://eprint.iacr.org/2016/659 - https://csrc.nist.gov/CSRC/media/Events/third-pqc-standardization-conference/documents/accepted-papers/ribeiro-saber-pq-key-pqc2021.pdf - https://en.wikipedia.org/wiki/Hermite_normal_form - https://en.wikipedia.org/wiki/Wagner%E2%80%93Fischer_algorithm - https://www.math.auckland.ac.nz/~sgal018/crypto-book/ch18.pdf - https://eprint.iacr.org/2019/1161 - QRAM: https://arxiv.org/abs/2305.10310 - https://en.wikipedia.org/wiki/Lenstra%E2%80%93Lenstra%E2%80%93Lov%C3%A1sz_lattice_basis_reduction_algorithm - MATZOV improved dual lattice attack: https://zenodo.org/records/6412487 - https://eprint.iacr.org/2008/504.pdf - https://eprint.iacr.org/2023/302.pdf "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Signal's Post-Quantum PQXDH, Same-Origin Policy, E2EE in the Browser Revisted 1:19:05

2 years ago1:19:05

1:19:05

We're back! Signal rolled out a protocol change to be post-quantum resilient! Someone was caught intercepting Jabber TLS via certificate transparency! Was the same-origin policy in web browers just a dirty hack all along? Plus secure message format formalisms, and even more beating of the dead horse that is E2EE in the browser. Transcript: https://securitycryptographywhatever.com/2023/11/07/PQXDH-etc Links: - https://zfnd.org/so-you-want-to-build-an-end-to-end-encrypted-web-app/ - https://github.com/superfly/macaroon - https://cryspen.com/post/pqxdh/ - https://eprint.iacr.org/2023/1390.pdf "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
'Jerry Solinas deserves a raise' with Steve Weis 57:31

2 years ago57:31

57:31

We explore how the NIST curve parameter seeds were generated, as best we can, with returning champion Steve Weis! “At the point where we find an intelligible English string that generates the NIST P-curve seeds, nobody serious is going to take the seed provenance concerns seriously anymore.” Transcript: https://securitycryptographywhatever.com/2023/10/12/the-nist-curves Links: - Steve’s post: https://saweis.net/posts/nist-curve-seed-origins.html - ANSI X9.62 ECDSA: https://safecurves.cr.yp.to/grouper.ieee.org/groups/1363/private/x9-62-09-20-98.pdf / FIPS 186-2 https://csrc.nist.gov/files/pubs/fips/186-2/final/docs/fips186-2.pdf - “A RIDDLE WRAPPED IN AN ENIGMA”: https://eprint.iacr.org/2015/1018.pdf - https://arstechnica.com/information-technology/2015/01/nsa-official-support-of-backdoored-dual_ec_drbg-was-regrettable/ - https://www.muckrock.com/foi/united-states-of-america-10/origin-of-fips-186-4-elliptic-curves-over-prime-field-seed-parameters-national-institute-of-standards-and-technology-78756/ - https://www.muckrock.com/foi/united-states-of-america-10/origin-of-fips-186-4-elliptic-curves-over-prime-field-seed-parameters-national-security-agency-78755/ - Filippo’s bounty: https://words.filippo.io/dispatches/seeds-bounty/ - Recommendations for Discrete Logarithm-based Cryptography: Elliptic Curve Domain Parameters - NIST 800-186 with Curve25519 and friends - RFC 8422: Elliptic Curve Cryptography (ECC) Cipher Suites for Transport Layer Security (TLS) Versions 1.2 and Earlier - https://www.rfc-editor.org/rfc/rfc4492#section-6 - https://blog.cryptographyengineering.com/2017/12/19/the-strange-story-of-extended-random/ - https://en.wikipedia.org/wiki/Bullrun_(decryption_program) - https://en.wikipedia.org/wiki/BSAFE - https://sockpuppet.org/blog/2015/08/04/is-extended-random-malicious/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Cruel Summer: hybrid signatures, Downfall, Zenbleed, 2G downgrades 58:35

2 years ago58:35

58:35

We're back from our summer vacation! We're covering a bunch of stuff we saw and did: Transcript: https://securitycryptographywhatever.com/2023/09/13/cruel-summer/ Links: - Zenbleed: https://lock.cmpxchg8b.com/zenbleed.html - Downfall: https://downfall.page - Post-quantum Yubikeys: https://security.googleblog.com/2023/08/toward-quantum-resilient-security-keys.html "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Why do we think anything is secure, with Steve Weis 46:17

2 years ago46:17

46:17

What does P vs NP have to do with cryptography? Why do people love and laugh about the random oracle model? What's an oracle? What do you mean factoring and discrete log don't have proofs of hardness? How does any of this cryptography stuff work, anyway? We trapped Steve Weis into answering our many questions. Transcript: https://securitycryptographywhatever.com/2023/06/29/why-do-we-think-anything-is-secure-with-steve-weis/ Links: - The Random Oracle Methodology, Revisited: https://eprint.iacr.org/1998/011.pdf - Factoring integers with CADO-NFS: https://www.ens-lyon.fr/LIP/AriC/wp-content/uploads/2015/03/JDetrey-tutorial.pdf - On One-way Functions from NP-Complete Problems: https://eprint.iacr.org/2021/513.pdf - Seny Kamara's lecture notes on provable security: https://cs.brown.edu/~seny/2950-v/2-provablesecurity.pdf - How To Simulate It – A Tutorial on the Simulation Proof Technique: https://eprint.iacr.org/2016/046.pdf - A Survey of Leakage-Resilient Cryptography: https://eprint.iacr.org/2019/302 - A Decade of Lattice Cryptography: https://eprint.iacr.org/2015/939.pdf "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Elon's Encrypted DMs with Matthew Garrett 52:28

2 years ago52:28

52:28

Are Twitter’s new encrypted DMs unreadable even if you put a gun to Elon’s head? We invited Matthew Garrett on to do a deep decompiled dive into what kind of cryptography actually shipped. Transcript: https://securitycryptographywhatever.com/2023/05/29/elons-encrypted-dms-with-matthew-garrett/ Links: https://mjg59.dreamwidth.org/66791.html https://help.twitter.com/en/using-twitter/encrypted-direct-messages https://www.techdirt.com/2023/05/11/twitter-launches-not-actually-encrypted-encrypted-dms/ BrokenKDF2BytesGenerator: https://github.com/bcgit/bc-java/blob/master/prov/src/main/java/org/bouncycastle/jce/provider/BrokenKDF2BytesGenerator.java#L70 Analysis from sweis: https://twitter.com/sweis/status/1657082478727933954?s=20 https://signal.org/docs/specifications/x3dh/ https://signal.org/docs/specifications/doubleratchet/ https://support.signal.org/hc/en-us/articles/360007059752-Backup-and-Restore-Messages Trail of Bits has not audited nor signed a contract yet, per Platformer: https://www.platformer.news/p/why-you-cant-trust-twitters-encrypted "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
WhatsApp Key Transparency with Jasleen Malvai and Kevin Lewi 55:43

2 years ago55:43

55:43

WhatsApp has announced they’re rolling out key transparency! Doing this at WhatsApp-scale (aka billions and biiillions of keys) is a significant task, so we talked to Jasleen Malvai and Kevin Lewi about how it works. Transcript: https://securitycryptographywhatever.com/2023/05/06/whatsapp-key-transparency Links: https://engineering.fb.com/2023/04/13/security/whatsapp-key-transparency/ https://github.com/facebook/akd Parkeet: https://eprint.iacr.org/2023/081.pdf CONIKS: https://eprint.iacr.org/2014/1004.pdf SEEMless: https://eprint.iacr.org/2018/607.pdf WhatsApp Security Whitepaper: https://www.whatsapp.com/security/WhatsApp-Security-Whitepaper.pdf Keybase key transparency: https://book.keybase.io/docs/server "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Messaging Layer Security (MLS) with Raphael Robert 55:02

2 years ago55:02

55:02

Messaging Layer Security (MLS) 1.0 is (basically) here! We invited Raphael Robert, coauthor of the MLS specification to explain it to us and answer our annoying questions (read: why does this exist?) Transcript: https://securitycryptographywhatever.com/2023/04/22/mls/ Links: - https://messaginglayersecurity.rocks/ - https://messaginglayersecurity.rocks/mls-protocol/draft-ietf-mls-protocol.html - https://messaginglayersecurity.rocks/mls-architecture/draft-ietf-mls-architecture.html - https://github.com/openmls/openmls - https://eprint.iacr.org/2022/1533.pdf - https://eprint.iacr.org/2020/1327.pdf - https://eprint.iacr.org/2022/559.pdf - https://signal.org/docs/ - https://en.wikipedia.org/wiki/Key_encapsulation_mechanism - https://twitter.com/beurdouche/status/1220617962182389760 - https://messaginglayersecurity.rocks/mls-protocol/draft-ietf-mls-protocol.html#mls-ciphersuites - https://www.ietf.org/archive/id/draft-ietf-mls-federation-02.html - https://datatracker.ietf.org/wg/mimi/documents/ - https://competition-policy.ec.europa.eu/dma/dma-workshops/interoperability-workshop_en - Yes in the protocol document this is 1.0: https://messaginglayersecurity.rocks/mls-protocol/draft-ietf-mls-protocol.html#section-6 "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Real World: Crypto (2023) 54:51

2 years ago54:51

54:51

Real World Cryptography 2023 is happening any moment now in Tokyo. Also, some phone basebands are broken. Links https://rwc.iacr.org/2023/ https://googleprojectzero.blogspot.com/2023/03/multiple-internet-to-baseband-remote-rce.html Transcript: https://securitycryptographywhatever.com/2023/03/24/rwc-2023/ "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Threema with Kenny Paterson, Matteo Scarlata and Kien Tuong Truong 1:03:55

2 years ago1:03:55

1:03:55

Another day, another ostensibly secure messenger that quails under the gaze of some intrepid cryptographers. This time, it's Threema, and the gaze belongs to Kenny Paterson, Matteo Scarlata, and Kien Tuong Truong from ETH Zurich. Get ready for some stunt cryptography, like 2 Fast 2 Furious stunts. Transcript: https://securitycryptographywhatever.com/2023/01/27/threema/ Links: https://breakingthe3ma.app/ https://threema.ch/press-files/2_documentation/cryptography_whitepaper.pdf https://threema.ch/en/blog/posts/ibex "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Has RSA been destroyed by a quantum computer??? 41:16

2 years ago41:16

41:16

There's a paper that claims one can factor a RSA-2048 modulus with the help of a 372-qubit quantum computer. Are we all gonna die? Also some musings about Bruce Schneier. Errata: Schneier's honorary PhD is from the University of Westminster, not UW. Transcript: https://securitycryptographywhatever.com/2023/01/06/has-rsa-been-destroyed-by-a-quantum-computer/ Links: https://arxiv.org/pdf/2212.12372.pdf https://eprint.iacr.org/2021/232.pdf https://github.com/lducas/SchnorrGate https://sweis.medium.com/did-schnorr-destroy-rsa-show-me-the-factors-dcb1bb980ab0 https://www.schneier.com/blog/archives/2023/01/breaking-rsa-with-a-quantum-computer.html https://scottaaronson.blog/?p=6957 "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
End of Year Wrap Up 59:27

2 years ago59:27

59:27

David and Deirdre gab about some stuff we didn't get to or just recently happened, like Tailscale's new Tailnet Lock, the Okta breach, what the fuck CISOs are for anyway, Rust in Android and Chrome, passkeys support, and of course, SBF. Transcript: https://securitycryptographywhatever.com/2023/01/04/end-of-year-wrap-up/ Links: https://tailscale.com/blog/tailnet-lock/ https://security.googleblog.com/2022/12/memory-safe-languages-in-android-13.html https://groups.google.com/a/chromium.org/g/chromium-dev/c/0z-6VJ9ZpVU "Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)…

Security Cryptography Whatever

1
Software Safety and Twitter with Kevin Riggle 58:36

2 years ago58:36