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WEBEX TEAMS DECRYPTING CONTENT PASSWORD
The user enters their PIN and the phone gateway derives a key from the PIN using your favorite password hashing algorithm, HMACs their public key with the PIN, and sends it to the existing participants. Second, you can have your phone gateways be stateless and unprivileged: when a user calls up the phone gateway, it generates a new keypair. > if those users can join the meeting after it has been established between Zoom-clients, it's not e2e.įirst, it's absolutely possible to design an E2E system where users can join the meeting after it started: Be realistic in the potential weak points (someone hijacking or able to modify the Zoom infrastructure, PSTN interconnects, non-Zoom clients, etc) and what you do to mitigate those risks. Market that you encrypt everything in transit, and that employees aren't allowed to access streams. Frankly, that set of people shouldn't be choosing anything they don't control and trust completely (code, hosting, updates, etc) which pretty much rules out any SaaS, so I suspect this set doesn't actually exist in the first place.īottom line: Don't call it "end-to-end encryption" if you have access to the keys and can decrypt, even if you choose not to. If there are people that that actually needed true end-to-end encryption and choose Zoom based on their marketing saying they had it, without doing validation, that's on them (though they're probably right to be upset with Zoom, too, for being misleading). For the vast majority of users, everything being encrypted over-the-wire coupled with a reasonable policy (eg, employees cannot listen in on random meetings) should be totally acceptable. Personally, I am totally fine with their implementation, I just wish they'd stop misusing the term. The fact that it's possible to decrypt is what makes this not "end-to-end encryption". In principle, it prevents potential eavesdroppers – including telecom providers, Internet providers, and even the provider of the communication service – from being able to access the cryptographic keys needed to decrypt the conversation. > End-to-end encryption (E2EE) is a system of communication where only the communicating users can read the messages. That is still not what "end-to-end encryption" means.
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To be clear, in a meeting where all of the participants are using Zoom clients, and the meeting is not being recorded, we encrypt all video, audio, screen sharing, and chat content at the sending client, and do not decrypt it at any point before it reaches the receiving clients.