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WhatsApp have published further details for users[1], as well as a technical whitepaper[2] explaining the implementation. There's also a blog post[3].

[1]: https://www.whatsapp.com/security/

[2]: https://www.whatsapp.com/security/WhatsApp-Security-Whitepap...

[3]: https://blog.whatsapp.com/10000618/End-to-end-encryption

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That last blog post is clearly written by Jan Koum, as it talks about his past in the Soviet Union. But his name doesn't appear anywhere on the blog post and if you didn't know that odd bit of trivia, it'd be completely confusing - who the heck is talking? Some random employee?

They need to add the name and job title of the blog posts author to the bottom.

It's now signed "Jan and Brian."

That's great. I wonder if it's because they saw my post or if they realised the issue themselves.

Neither is Open Whisper Systems or the signal protocol mentioned in this blog post, but maybe this would have been too much of advertisement for a competitor.

To be fair: whatsapp mentioned it at the other two links.

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