If you want to dive deep into guaranteed end-to-end encryption and how green checkmarks protect against compromised servers ("MITM attacks"), the "Cryptographic Analysis of Delta Chat" from Applied Cryptography researchers at ETH Zuerich has been published at https://eprint.iacr.org/2024/918.pdf -- earlier this year we had blogged from our side how we addressed all findings https://delta.chat/en/2024-03-25-crypto-analysis-securejoin
Delta Chat: Hardening Guaranteed End-to-End encryption based on a security analysis from ETH researchers
We released guaranteed end-to-end encryption in November 2023 and were in for a pleasant surprise three months later. The Applied Cryptography Group at ETH Zurich handed us a cryptographic security...delta.chat
Kevin Karhan :verified:
in reply to Delta Chat • • •TBH, I think that #deltaChat, alongside @monocles / #monoclesChat is one of the few real #E2EE #Chat & #Messaging solutions (which allow for full #SelfCustody of keys as well as being based on #OpenStandards for a #MultiVendor & #MultiProvider ecosystem) and even out-of-band verification and key exchange...
Needless to say both support using @torproject / #Tor via #Orbot and thus connecting to an #OnionService or just anonymously connecting to the server one personally chooses...
The advantage of XMPP is that it also allows for calls, whereas I've to see how one can do Group Chats on deltaChat at all...
Delta Chat
in reply to Kevin Karhan :verified: • • •Delta Chat: FAQ
delta.chat