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

Security Cryptography Whatever

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תוכן מסופק על ידי Deirdre Connolly, Thomas Ptacek, David Adrian, Deirdre Connolly, Thomas Ptacek, and David Adrian. כל תוכן הפודקאסטים כולל פרקים, גרפיקה ותיאורי פודקאסטים מועלים ומסופקים ישירות על ידי Deirdre Connolly, Thomas Ptacek, David Adrian, Deirdre Connolly, Thomas Ptacek, and David Adrian או שותף פלטפורמת הפודקאסט שלהם. אם אתה מאמין שמישהו משתמש ביצירה שלך המוגנת בזכויות יוצרים ללא רשותך, אתה יכול לעקוב אחר התהליך המתואר כאן https://he.player.fm/legal.

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Why Petra Needs Its People 28:39

לפני 1 day28:39

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28:39

For centuries, members of the B’doul Bedouin tribe lived in the caves around the ancient city of Petra, Jordan. Then, in the 1980s, the government forced the tribe to move in the name of preserving the geological site for tourists. But if the residents are forced to leave, and if their heritage has been permanently changed, then what exactly is being preserved? Learn about your ad choices: dovetail.prx.org/ad-choices…

לפני שנה 1:19:05

MP3•בית הפרקים

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)

פרקים

1. Issues With Encrypted Jabber Communications (00:00:00)

2. App and Web Security Challenges (00:13:53)

3. Benefits and Limitations of Web Encryption (00:22:26)

4. Benefits and Challenges of Browser-Based Cryptography (00:29:54)

5. Web App Security and Distribution Models (00:35:09)

6. Web Security and Signal Key Exchange (00:48:36)

7. X3DH Protocol and Signal's Key Exchange (00:53:49)

8. Camry Encapsulation Attack and Secure Encryption (01:08:11)

54 פרקים

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

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

Security Cryptography Whatever

45 subscribers

published לפני שנה

שתפו

MP3•בית הפרקים

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

פרקים

1. Issues With Encrypted Jabber Communications (00:00:00)

2. App and Web Security Challenges (00:13:53)

3. Benefits and Limitations of Web Encryption (00:22:26)

4. Benefits and Challenges of Browser-Based Cryptography (00:29:54)

5. Web App Security and Distribution Models (00:35:09)

6. Web Security and Signal Key Exchange (00:48:36)

7. X3DH Protocol and Signal's Key Exchange (00:53:49)

8. Camry Encapsulation Attack and Secure Encryption (01:08:11)

54 פרקים

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

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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)…

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