Trait Keychain

pub trait Keychain:
    Index
    + Clone
    + Send
    + Sync
    + 'static {
    type Signature: Signature;

    // Required methods
    fn node_count(&self) -> NodeCount;
    fn sign(&self, msg: &[u8]) -> Self::Signature;
    fn verify(
        &self,
        msg: &[u8],
        sgn: &Self::Signature,
        index: NodeIndex,
    ) -> bool;
}

Abstraction of the signing data and verifying signatures.

A typical implementation of Keychain would be a collection of N public keys, an index i and a single private key corresponding to the public key number i. The meaning of sign is then to produce a signature s using the given private key, and verify(msg, s, j) is to verify whether the signature s under the message msg is correct with respect to the public key of the jth node.

Required Associated Types

type Signature: Signature

Required Methods

fn node_count(&self) -> NodeCount

Returns the total number of known public keys.

fn sign(&self, msg: &[u8]) -> Self::Signature

Signs a message msg.

fn verify(&self, msg: &[u8], sgn: &Self::Signature, index: NodeIndex) -> bool

Verifies whether a node with index correctly signed the message msg. Should always return false for indices outside the node range.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors