Trait PrehashSignature

pub trait PrehashSignature {
    type Digest: Digest;
}

Marker trait for Signature types computable as 𝐒(𝐇(𝒎)) i.e. ones which prehash a message to be signed as 𝐇(𝒎)

Where:

• 𝐒: signature algorithm
• 𝐇: hash (a.k.a. digest) function
• 𝒎: message

This approach is relatively common in signature schemes based on the Fiat-Shamir heuristic.

For signature types that implement this trait, when the derive crate feature is enabled a custom derive for Signer is available for any types that impl DigestSigner, and likewise for deriving Verifier for types which impl DigestVerifier.

Required Associated Types

type Digest: Digest

Preferred Digest algorithm to use when computing this signature type.

Implementors