4 ms·

[Removed: Mistaken information.]

• nemo1618 5y ago
  Signatures aren't just uniformly-distributed entropy, like hashes are; they encode real information, e.g. elliptic curve coordinates. Hashing and truncating the signature would destroy that information, meaning the signature could no longer be verified.
  • _Nat_ 5y ago
    Ick, yeah, you're right: might've been thinking hash-then-sign, but backwards.