Hello everyone,

I keep reading about recent developments in the quantum computing field, with whatever this may mean for classic asymmetric encryption/key exchange algorithms. More specifically, it appears that both Google (Quantum frontiers may be closer than they appear) and Cloudflare (Cloudflare targets 2029 for full post-quantum security) have targeted 2029 for post-quantum migration. Both of these blog posts made me ponder about the post-quantum security of the OMEMO. I am not an expert on the field of asymmetric cryptography, but per XEP-0384, OMEMO uses the X3DH key agreement protocol for key exchange and the Double Ratchet Algorithm for message encryption and decryption. From what I can grasp, Signal has developed the PQXDH key agreement protocol as a post-quantum secure variant of X3DH, while Double Rachet also seems to provide no post-quantum protection.

With that being said, I'd like to ask if there are any plans to update the relevant OMEMO standard in the future to make OMEMO post-quantum-proof and if not, whether OMEMO's post-quantum security is considered trivial or not.

Thanks in advance