Time for another digest update?

[martinthomson]

Using the current crate with the 0.10 version of sha2 turns out to be a little messy:

error[E0277]: the trait bound `CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>>>: digest::Update` is not satisfied
   --> src/user.rs:84:9
    |
84  |         RistrettoPoint::hash_from_bytes::<Sha512>(&input)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `digest::Update` is not implemented for `CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>>>`
    |
    = note: required because of the requirements on the impl of `digest::digest::Digest` for `CoreWrapper<CtVariableCoreWrapper<Sha512VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>>>`
note: required by a bound in `RistrettoPoint::hash_from_bytes`
   --> .../curve25519-dalek-ng-4.1.1/src/ristretto.rs:689:18
    |
689 |         where D: Digest<OutputSize = U64> + Default
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `RistrettoPoint::hash_from_bytes`

It seems like the requirements from this crate are modest, but the change would be quite disruptive (for the same reason) and it might need a version bump. I'd have said a minor release is in order, but you seem to be using major versions for similar changes.

[Rexagon]

Looking forward to this update. With the new object-safe Update, it's possible to use dyn to reduce code bloat for some packet processing, but signature verification requires this crate, which still uses 0.9 :(

[0xdeafbeef]

Waiting for it