Re: [TLS] [EXTERNAL] Re: [CFRG] X-Wing: the go-to PQ/T hybrid KEM?

2024-01-11 Thread Bas Westerbaan
> Because for embedded devices that don’t have enough memory to hold all > of those objects in simultaneously, this is likely the order in which it > would have those things available to stream into SHA3. > That will not make a difference: the SHA3-256 rate is 136 bytes. > Another thing to cons

Re: [TLS] [EXTERNAL] Re: [CFRG] X-Wing: the go-to PQ/T hybrid KEM?

2024-01-11 Thread Mike Ounsworth
Bas Westerbaan writes: > SHA3-256( xwing-label || ss_ML-KEM || ss_X25519 || ct_X25519 || pk_X25519 > ) One critique: I would consider changing the order of the X25519 params to SHA3-256( xwing-label || ss_ML-KEM || pk_X25519 || ct_X25519 || ss_X25519 ) Because for embedded device