Struct ChainSignature 

pub struct ChainSignature<E>(/* private fields */);

Represents an ECDSA signature based on the secp256k1 curve with a recoverable public key. The signature uses Keccak256 as the hash function.

This signature encodes the 2-bit recovery information into the uppermost bits from MSB of the S value, which are never used by this ECDSA instantiation over secp256k1.

The instance holds the byte array consisting of R and S values with the recovery bit already embedded in S.

See EIP-2098 for details.

Implementations

impl<E> ChainSignature<E>

where E: EcdsaEngine,

pub fn raw_signature(&self) -> ([u8; 64], u8)

Returns the raw signature, without the encoded public key recovery bit and the recovery parity bit as a separate value.

pub fn sign_message( message: &[u8], chain_keypair: &ChainKeypair, ) -> ChainSignature<E>

Signs the given message using the chain private key.

pub fn sign_hash( hash: &HashBase<CoreWrapper<Keccak256Core>>, chain_keypair: &ChainKeypair, ) -> ChainSignature<E>

Signs the given hash using the raw private key.

pub fn verify_message( &self, message: &[u8], public_key: &PublicKey, ) -> Result<bool, CryptoError>

Verifies this signature against the given message and a public key object

pub fn verify_hash( &self, hash: &HashBase<CoreWrapper<Keccak256Core>>, public_key: &PublicKey, ) -> Result<bool, CryptoError>

Verifies this signature against the given hash and a public key object

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

Recovers signer public key if this signature is a valid signature of the given msg.

pub fn recover_from_hash( &self, hash: &HashBase<CoreWrapper<Keccak256Core>>, ) -> Result<PublicKey, CryptoError>

Recovers signer public key if this signature is a valid signature of the given hash.

Trait Implementations

impl<E> AsRef<[u8]> for ChainSignature<E>

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

Converts this type into a shared reference of the (usually inferred) input type.

impl<E> BytesRepresentable for ChainSignature<E>

const SIZE: usize = 64usize

Size of the encoded byte array.

fn into_boxed(self) -> Box<[u8]>

Convenience function to copy this type’s binary representation into a Box.

impl<E> Clone for ChainSignature<E>

where E: Clone,

fn clone(&self) -> ChainSignature<E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<E> Debug for ChainSignature<E>

where E: Debug,

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

Formats the value using the given formatter.

impl<'de, E> Deserialize<'de> for ChainSignature<E>

fn deserialize<__D>( __deserializer: __D, ) -> Result<ChainSignature<E>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<E> PartialEq for ChainSignature<E>

where E: PartialEq,

fn eq(&self, other: &ChainSignature<E>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<E> Serialize for ChainSignature<E>

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<E> TryFrom<&[u8]> for ChainSignature<E>

type Error = GeneralError

The type returned in the event of a conversion error.

fn try_from( value: &[u8], ) -> Result<ChainSignature<E>, <ChainSignature<E> as TryFrom<&[u8]>>::Error>

Performs the conversion.

impl<E> Copy for ChainSignature<E>

where E: Copy,

impl<E> Eq for ChainSignature<E>

where E: Eq,

impl<E> StructuralPartialEq for ChainSignature<E>