The prior `SpendAuth` and `Binding` enums have been renamed to
`sapling::{SpendAuth, Binding}`. These might subsequently be removed
from the crate entirely (moving into a wrapping `redjubjub` crate).
The code assumes that scalar and point representations are [u8; 32],
which will be the case for all curves we instantiate RedDSA with for
Zcash.
Implements FROST (Flexible Round Optimized Schnorr Threshold Signatures, https://eprint.iacr.org/2020/852) where key generation is performed by a trusted dealer.
Future work will include implementing distributed key generation and re-randomizability.
Co-authored-by: Chelsea Komlo <me@chelseakomlo.com>
Co-authored-by: Isis Lovecruft <isis@patternsinthevoid.net>
This closes a gap in the API where it was impossible to retry items in a failed
batch, because the opaque Item type could not be verified individually.
* Pulls in some traits and methods from curve25519-dalek around the
vartime multiscalar multiplication.
* Move scalar mul things we want to upstream to jubjub to their own crate
* Make Verify agnostic to the SigType
Co-authored-by: Henry de Valence <hdevalence@hdevalence.ca>
Co-authored-by: Jane Lusby <jlusby42@gmail.com>
str4d
Conrado Gouvea
Taylor Hornby
Tomas Krnak
Jack Grigg
Deirdre Connolly
Henry de Valence