Trait ecdsa::hazmat::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.

Implementors