this post was submitted on 20 Sep 2023
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Privacy

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We believe that the key encapsulation mechanism we have selected, CRYSTALS-Kyber, is built on solid foundations, but to be safe we do not want to simply replace our existing elliptic curve cryptography foundations with a post-quantum public key cryptosystem. Instead, we are augmenting our existing cryptosystems such that an attacker must break both systems in order to compute the keys protecting people’s communications.

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Our new protocol is already supported in the latest versions of Signal’s client applications and is in use for chats initiated after both sides of the chat are using the latest Signal software. In the coming months (after sufficient time has passed for everyone using Signal to update), we will disable X3DH for new chats and require PQXDH for all new chats. In parallel, we will roll out software updates to upgrade existing chats to this new protocol.

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[–] incompetentboob -4 points 1 year ago (3 children)

Do we still like signal? I remember reading something about why you should stop using signal but this seems contrary to that

[–] [email protected] 8 points 1 year ago

For every thing on this world, there will be people disliking this thing and being very vocal about it.

[–] [email protected] 2 points 1 year ago

EFF still recommend Signal (and others) for people fitting various risk profiles: https://ssd.eff.org/