My understanding of PQC (Submit Quantum Cryptography) schemes is that they sometimes require a number of of the next:
- very massive public keys
- very massive signatures
- very sluggish validation time
This could dramatically cut back blockchain throughput, if we want to maintain node validation assets fixed (i.e. not improve the block measurement and never permit worst case block validation time to extend considerably).
As well as, the ({hardware}) wallets that produce such signatures could must be extra highly effective, however I am not involved about that right here.
On the similar time there’s a lot pleasure about ZKPs (Zero Data Proofs) in that they’re probably house environment friendly and low-cost to confirm.
Each PQC and ZKP require future mushy forks to make them sensible for particular person use.
This begs the query whether or not you’ll be able to mix these. If Bitcoin had been to have a mushy fork that makes ZKP sensible, both with a direct op code or by way of environment friendly covenant help, can that be used to implement PQC?
I can think about a minimum of two caveats:
- the selection of ZKP provides a further cryptographic assumption
- if the ZKP (covenant) is challenge-response based mostly, the worst case footprint would nonetheless be an issue
However is that each one?