3. Cryptographic primitives. Curve25519 / XSalsa20 256 / Poly1305 (downgraded for the absence of PQ encryption).
We added PQ encryption in March this year: https://simplex.chat/blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html
This is done in the same way as Apple describes as PQ3 here: https://security.apple.com/blog/imessage-pq3/
it provides stronger protection than Signal design where PQ encryption only applies to the initial key exchange.
simplex / SimpleX Chat
npub1ex…7d828
2024-08-24 12:17:43
in reply to nevent1q…tjtf
Author Public Key
npub1exv22uulqnmlluszc4yk92jhs2e5ajcs6mu3t00a6avzjcalj9csm7d828Published at
2024-08-24 12:17:43Event JSON
{
"id": "7d2bbc00796716ed590938bf60ade00cfee519921bf8096a93742a9b867d285e",
"pubkey": "c998a5739f04f7fff202c54962aa5782b34ecb10d6f915bdfdd7582963bf9171",
"created_at": 1724501863,
"kind": 1,
"tags": [
[
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"",
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],
[
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[
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],
"content": "3. Cryptographic primitives. Curve25519 / XSalsa20 256 / Poly1305 (downgraded for the absence of PQ encryption).\n\nWe added PQ encryption in March this year: https://simplex.chat/blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html\n\nThis is done in the same way as Apple describes as PQ3 here: https://security.apple.com/blog/imessage-pq3/\n\nit provides stronger protection than Signal design where PQ encryption only applies to the initial key exchange.",
"sig": "32b5c8b1f0d4cf396b0e6e4c18c48fb83228163089386148fbc4e47166bea184851e34f92bde3e004b5d7517558affa194c40acb21a04a79ca6a89b6ab48539b"
}