Struct k256::ecdsa::recoverable::Signature[−][src]

pub struct Signature { /* fields omitted */ }
This is supported on crate feature ecdsa-core only.

Ethereum-style “recoverable signatures” which allow for the recovery of the signer’s VerifyingKey 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[src]

pub fn new(signature: &Signature, recovery_id: Id) -> Result<Self, Error>[src]

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 recovery_id(self) -> Id[src]

Get the recovery Id for this signature

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

This is supported on crate features ecdsa and keccak256 only.

Given a public key, message, and signature, use trial recovery to determine if a suitable recovery ID exists, or return an error otherwise.

Assumes Keccak256 as the message digest function. Use Signature::from_digest_trial_recovery to support other digest functions.

pub fn from_digest_trial_recovery<D>(
    public_key: &VerifyingKey,
    digest: D,
    signature: &Signature
) -> Result<Self, Error> where
    D: Clone + Digest<OutputSize = U32>, [src]

This is supported on crate feature ecdsa only.

Given a public key, message digest, and signature, use trial recovery to determine if a suitable recovery ID exists, or return an error otherwise.

pub fn recover_verify_key(&self, msg: &[u8]) -> Result<VerifyingKey, Error>[src]

This is supported on crate features ecdsa and keccak256 only.

Recover the public key used to create the given signature as a VerifyingKey.

pub fn recover_verify_key_from_digest<D>(
    &self,
    msg_digest: D
) -> Result<VerifyingKey, Error> where
    D: Digest<OutputSize = U32>, [src]

This is supported on crate feature ecdsa only.

Recover the public key used to create the given signature as a VerifyingKey from the provided precomputed [Digest].

pub fn recover_verify_key_from_digest_bytes(
    &self,
    digest_bytes: &FieldBytes
) -> Result<VerifyingKey, Error>[src]

This is supported on crate feature ecdsa only.

Recover the public key used to create the given signature as a VerifyingKey from the raw bytes of a message digest.

pub fn r(&self) -> NonZeroScalar[src]

This is supported on crate feature ecdsa only.

Parse the r component of this signature to a NonZeroScalar

pub fn s(&self) -> NonZeroScalar[src]

This is supported on crate feature ecdsa only.

Parse the s component of this signature to a NonZeroScalar

Trait Implementations

impl AsRef<[u8]> for Signature[src]

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

Performs the conversion.

impl Clone for Signature[src]

fn clone(&self) -> Signature[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl Debug for Signature[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

Formats the value using the given formatter. Read more

impl<D> DigestSigner<D, Signature> for SigningKey where
    D: BlockInput + FixedOutput<OutputSize = U32> + Clone + Default + Reset + Update, [src]

fn try_sign_digest(&self, digest: D) -> Result<Signature, Error>[src]

Attempt to sign the given prehashed message [Digest], returning a digital signature on success, or an error if something went wrong. Read more

fn sign_digest(&self, digest: D) -> S[src]

Sign the given prehashed message [Digest], returning a signature. Read more

impl<D> DigestVerifier<D, Signature> for VerifyingKey where
    D: Digest<OutputSize = U32>, [src]

fn verify_digest(&self, digest: D, signature: &Signature) -> Result<(), Error>[src]

Verify the signature against the given [Digest] output.

impl From<Signature> for Signature[src]

fn from(sig: Signature) -> Self[src]

Performs the conversion.

impl PartialEq<Signature> for Signature[src]

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

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

#[must_use]
fn ne(&self, other: &Rhs) -> bool1.0.0[src]

This method tests for !=.

impl PrehashSignature for Signature[src]

type Digest = Keccak256

Preferred Digest algorithm to use when computing this signature type.

impl<D> RandomizedDigestSigner<D, Signature> for SigningKey where
    D: BlockInput + FixedOutput<OutputSize = U32> + Clone + Default + Reset + Update, [src]

fn try_sign_digest_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    digest: D
) -> Result<Signature, Error>[src]

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

fn sign_digest_with_rng(&self, rng: impl CryptoRng + RngCore, digest: D) -> S[src]

Sign the given prehashed message Digest, returning a signature. Read more

impl Signature for Signature[src]

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

Parse a signature from its byte representation

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

Borrow a byte slice representing the serialized form of this signature

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

type Error = Error

The type returned in the event of a conversion error.

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

Performs the conversion.

impl Copy for Signature[src]

impl Eq for Signature[src]

Auto Trait Implementations

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

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) -> R where
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🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

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