Trait DigestPrimitive

pub trait DigestPrimitive: PrimeCurve {
    type Digest: Digest;

    // Provided method
    fn prehash_to_field_bytes(prehash: &[u8]) -> Result<FieldBytes<Self>> { ... }
}

Bind a preferred Digest algorithm to an elliptic curve type.

Generally there is a preferred variety of the SHA-2 family used with ECDSA for a particular elliptic curve.

This trait can be used to specify it, and with it receive a blanket impl of [PrehashSignature], used by signature_derive) for the Signature type for a particular elliptic curve.

Required Associated Types

type Digest: Digest

Preferred digest to use when computing ECDSA signatures for this elliptic curve. This is typically a member of the SHA-2 family.

Provided Methods

fn prehash_to_field_bytes(prehash: &[u8]) -> Result<FieldBytes<Self>>

Compute field bytes for a prehash (message digest), either zero-padding or truncating if the prehash size does not match the field size.

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