SAFENetwork Quantum Resistant?

[piluso]

Currently I think they are still using the libsodium library so they are using Curve25519xsalsa20poly1305 for Public-key authenticated encryption, xsalsa20poly1305 for Secret-key authenticated encryption, ed25519 as Public-key signatures and SHA-512.

But in Nov 17 @dirvine said:

@dirvine

RSA /ECC etc. are probably not secure against quantum computing, but our chunks are, (AES internally + xor of previous chunk hash) quantum resistant. There are a few other things in the mix, but you get the idea.

[edit I should add the session packets etc. where you keep the data maps when encrypted with AES types are quantum resistant] I am looking to use a method of private encryption that is similar to EDDH capability but using quantum resistant protocols all the way, so quantum proof is well within our reach for all data]

It would be interesting if there was any updates on that idea.

@tjf

Correct me if I am wrong, but half of AES-256 is AES-255, right? Difficulty doubles with each increment.

In this case, Grover’s algorithm halves the effective key length for symmetric encryption.
AES-512 → AES-256
AES-256 → AES-128
So even though it takes a significant hit, it would be still considered fairly secure (aka. “quantum resistant”)