Struct k256::ecdsa::recoverable::Signature

pub struct Signature { /* fields omitted */ }

This is supported on feature="ecdsa-core" only.

Ethereum-style "recoverable signatures" which allow for the recovery of the signer's PublicKey from the signature itself.

This format consists of Signature followed by a 1-byte recovery Id (65-bytes total):

• r: 32-byte integer, big endian
• s: 32-byte integer, big endian
• v: 1-byte recovery Id

Implementations

impl Signature

pub fn new(signature: &Signature, recovery_id: Id) -> Self

This is supported on feature="ecdsa-core" only.

Create a new recoverable ECDSA/secp256k1 signature from a regular fixed-size signature and an associated recovery Id.

This is an "unchecked" conversion and assumes the provided Id is valid for this signature.

pub fn from_trial_recovery(
    public_key: &PublicKey,
    msg: &[u8],
    signature: &Signature
) -> Result<Self, Error>

This is supported on feature="ecdsa-core" only.

Given a public key, message, and signature, use trial recovery for both possible recovery IDs in an attempt to determine if a suitable recovery ID exists, or return an error otherwise.

pub fn recovery_id(self) -> Id

This is supported on feature="ecdsa-core" only.

Get the recovery Id for this signature

pub fn recover_pubkey(&self, msg: &[u8]) -> Result<PublicKey, Error>

This is supported on feature="ecdsa-core" and feature="ecdsa" only.

Recover the PublicKey used to create the given signature

Trait Implementations

impl AsRef<[u8]> for Signature

fn as_ref(&self) -> &[u8]

Performs the conversion.

impl Clone for Signature

fn clone(&self) -> Signature

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Signature

impl Debug for Signature

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for Signature

impl From<Signature> for Signature

fn from(sig: Signature) -> Self

Performs the conversion.

impl PartialEq<Signature> for Signature

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl RandomizedSigner<Signature> for Signer

fn try_sign_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    msg: &[u8]
) -> Result<Signature, Error>

Attempt to sign the given message, returning a digital signature on success, or an error if something went wrong.

fn sign_with_rng(&self, rng: impl RngCore + CryptoRng, msg: &[u8]) -> S

Sign the given message and return a digital signature

impl Signature for Signature

fn from_bytes(bytes: &[u8]) -> Result<Self, Error>

Parse a signature from its byte representation

fn as_bytes(&self) -> &[u8]

Borrow a byte slice representing the serialized form of this signature

impl<'_> TryFrom<&'_ [u8]> for Signature

type Error = Error

The type returned in the event of a conversion error.

fn try_from(bytes: &[u8]) -> Result<Self, Error>

Performs the conversion.

impl Verifier<Signature> for Verifier

fn verify(&self, msg: &[u8], signature: &Signature) -> Result<(), Error>

Use Self to verify that the provided signature for a given message bytestring is authentic.