Ledger CTO: bitcoin's migration to post-quantum signatures could take years
- —SHRINCS uses only SHA-256 and produces a 48-byte public key
- —Stateful signatures: 548-4,619 bytes; stateless fallback: 5,777 bytes
- —A counter failure or backup restore risks key reuse
- —Key generation and stateless signing could take minutes on devices
Why it matters: The shift to post-quantum signatures will require years of coordination among developers, wallets and nodes, as well as consensus on the fate of "dormant" coins.
Source: Crypto Economy