We love Nostr as a publishing platform that offers unparalleled censorship resistance. But NIP44 does NOT provide most of the important qualities of e2e encryption:
- break-in recovery.
- repudiation (deniability).
- visibility of connection graph to observers.
- fixed message sizes (although it can be provided by the specific app)
- resistance to Shore algorithm (PQ encryption).
It's unclear whether it provides forward secrecy, but the spec implies that it does not - I might be wrong here.
We wrote this post about the qualities of e2e encryption and why they are important: https://simplex.chat/blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html
simplex / SimpleX Chat
npub1ex…7d828
2024-08-08 22:07:00
in reply to nevent1q…77dd
Author Public Key
npub1exv22uulqnmlluszc4yk92jhs2e5ajcs6mu3t00a6avzjcalj9csm7d828Published at
2024-08-08 22:07:00Event JSON
{
"id": "facac6d0cc998a07ec5b88a0d000592be4a4eafd5246edda5d48e539e2948d03",
"pubkey": "c998a5739f04f7fff202c54962aa5782b34ecb10d6f915bdfdd7582963bf9171",
"created_at": 1723154820,
"kind": 1,
"tags": [
[
"e",
"a83d3f95b524ffe728dfd8a89c00b2afe8243299b382e18dc2a10301da9e72c7",
"wss://freespeech.casa",
"root"
],
[
"e",
"e6faeeae96f7aecd1f8cd0cb0837eec4b0f1d1739d4a79065a8234733bfcd02d",
"wss://freespeech.casa",
"reply"
],
[
"p",
"0f563fe2cfdf180cb104586b95873379a0c1fdcfbc301a80c8255f33d15f039d"
],
[
"p",
"c998a5739f04f7fff202c54962aa5782b34ecb10d6f915bdfdd7582963bf9171",
"",
"mention"
],
[
"p",
"1577e4599dd10c863498fe3c20bd82aafaf829a595ce83c5cf8ac3463531b09b"
],
[
"p",
"5eca50a04afaefe55659fb74810b42654e2268c1acca6e53801b9862db74a83a",
"",
"mention"
]
],
"content": "We love Nostr as a publishing platform that offers unparalleled censorship resistance. But NIP44 does NOT provide most of the important qualities of e2e encryption:\n\n- break-in recovery.\n- repudiation (deniability).\n- visibility of connection graph to observers.\n- fixed message sizes (although it can be provided by the specific app)\n- resistance to Shore algorithm (PQ encryption).\n\nIt's unclear whether it provides forward secrecy, but the spec implies that it does not - I might be wrong here.\n\nWe wrote this post about the qualities of e2e encryption and why they are important: https://simplex.chat/blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.html",
"sig": "aa43159526585ecfc7b8d4061409236682d7ee0bd499ae2246a7a41acc45f9a52d7fdf97a94f7b5799e022fa681ca36592db9eb1424b81a32c87b4a1f673610f"
}