Security Cryptography Whatever

We're talking about Apple's new proposed client-side CSAM detection system. We weren't sure if we were going to cover this, and then we realized that not all of us have been paying super close attention to what the hell this thing is, and have a lot of questions about it. So we're talking about it, with our special guest Professor Matthew Green.We cover how Apple's system works, what it does (and doesn't), where we have unanswered questions, and where some of the gaps are.Transcript: https://securitycryptographywhatever.com/2021/08/27/apple-s-csam-detection-with-matthew-green/Find us at:https://twitter.com/scwpodhttps://twitter.com/durumcrustulumhttps://twitter.com/tqbfhttps://twitter.com/davidcadrianLinks:https://www.apple.com/child-safety/pdf/CSAM_Detection_Technical_Summary.pdfhttps://www.apple.com/child-safety/pdf/Apple_PSI_System_Security_Protocol_and_Analysis.pdfhttps://www.law.cornell.edu/uscode/text/18/2258Ahttps://www.missingkids.org/content/dam/missingkids/gethelp/2020-reports-by-esp.pdfhttps://www.reuters.com/article/us-apple-fbi-icloud-exclusive/exclusive-apple-dropped-plan-for-encrypting-backups-after-fbi-complained-sources-idUSKBN1ZK1CThttps://en.wikipedia.org/wiki/The_purpose_of_a_system_is_what_it_doeshttps://research.fb.com/blog/2021/02/understanding-the-intentions-of-child-sexual-abuse-material-csam-sharers/https://www.nytimes.com/interactive/2019/11/09/us/internet-child-sex-abuse.htmlhttps://www.apple.com/child-safety/pdf/Expanded_Protections_for_Children_Frequently_Asked_Questions.pdf"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)

We did not run out of things to talk about: Chrome vs. Safari vs. Firefox. Rust vs. C++. Bug bounties vs. exploit development. The Peace Corps vs. The Marine Corps.Transcript: https://securitycryptographywhatever.com/2021/08/21/platform-security-part-deux-with-justin-schuh/Find us at:https://twitter.com/scwpodhttps://twitter.com/durumcrustulumhttps://twitter.com/tqbfhttps://twitter.com/davidcadrian"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)

🔥JWT🔥We talk about all sorts of tokens: JWT, PASETO, Protobuf Tokens, Macaroons, and Biscuits. With the great Jonathan Rudenberg!After we recorded this, Thomas went deep on tokens even beyond what we talked about here: https://fly.io/blog/api-tokens-a-tedious-survey/Transcript: https://securitycryptographywhatever.com/2021/08/12/what-do-we-do-about-jwt-with-jonathan-rudenberg/Find us at:https://twitter.com/durumcrustulumhttps://twitter.com/tqbfhttps://twitter.com/davidcadrianhttps://twitter.com/scwpod"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)

Special guest Filippo Valsorda joins us to debate with Thomas on whether one should or should not "roll your own crypto", and how to produce better cryptography in general.After we recorded this, David went even deeper  on 'rolling your own crypto' in a blog post here: https://dadrian.io/blog/posts/roll-your-own-crypto/Transcript: https://securitycryptographywhatever.com/2021/07/31/the-great-roll-your-own-crypto-debate-with-filippo-valsorda/Links:https://peter.website/meow-hash-cryptanalysishttps://arxiv.org/pdf/2107.04940.pdfhttps://ristretto.grouphttps://filippo.io/heartbleedFind us at:https://twitter.com/durumcrustulumhttps://twitter.com/tqbf https://twitter.com/davidcadrian"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)

Deirdre, Thomas and David talk about NSO group, Pegasus,  whether iOS a burning trash fire, the zero-day market, and whether rewriting all of iOS in Swift is a viable strategy for reducing all these vulns.Transcript: https://securitycryptographywhatever.com/2021/07/26/nso-group-pegasus-zero-days-i-os-message-security/Find us at:https://twitter.com/durumcrustulumhttps://twitter.com/tqbf https://twitter.com/davidcadrian"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@davidcadrian)