wamu-core 0.1.1

A Rust implementation of the core Wamu protocol for computation of threshold signatures by multiple decentralized identities.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

//! Traits for core types.

use crate::crypto::{Signature, VerifyingKey};

/// Interface for a [decentralized identity](https://ethereum.org/en/decentralized-identity/) provider.
///
/// **NOTE:** For interoperability with existing wallet solutions,
/// the only requirement for decentralized identity providers is
/// the ability to compute cryptographic signatures for any arbitrary message in such a way that
/// the output signature can be verified in a non-interactive manner.
pub trait IdentityProvider: Clone + std::fmt::Debug {
    /// Returns the verifying key (i.e public key or address) for the identity.
    fn verifying_key(&self) -> VerifyingKey;

    /// Computes signature for a message.
    fn sign(&self, msg: &[u8]) -> Signature;

    /// Computes signature for a message and returns (`r`, `s`) as (`[u8; 32]`, `[u8; 32]`).
    fn sign_message_share(&self, msg: &[u8]) -> ([u8; 32], [u8; 32]);
}