Struct Signature 

#[repr(C)]
pub struct Signature {
    pub(crate) R: [u8; 32],
    pub(crate) s: [u8; 32],
}

Ed25519 signature.

This type represents a container for the byte serialization of an Ed25519 signature, and does not necessarily represent well-formed field or curve elements.

Signature verification libraries are expected to reject invalid field elements at the time a signature is verified.

Fields

R: [u8; 32]

s: [u8; 32]

Implementations

impl Signature

pub const BYTE_SIZE: usize

Size of an encoded Ed25519 signature in bytes.

pub fn from_bytes(bytes: &[u8; 64]) -> Signature

Parse an Ed25519 signature from a byte slice.

pub fn from_components(R: [u8; 32], s: [u8; 32]) -> Signature

Parse an Ed25519 signature from its R and s components.

pub fn from_slice(bytes: &[u8]) -> Result<Signature, Error>

Parse an Ed25519 signature from a byte slice.

Errors

• Returns Error if the input byte slice is not 64-bytes.

pub fn r_bytes(&self) -> &[u8; 32]

Bytes for the R component of a signature.

pub fn s_bytes(&self) -> &[u8; 32]

Bytes for the s component of a signature.

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

Return the inner byte array.

pub fn to_vec(&self) -> Vec<u8>

Convert this signature into a byte vector.

Trait Implementations

impl AssociatedAlgorithmIdentifier for Signature

Available on crate feature pkcs8 only.

const ALGORITHM_IDENTIFIER: AlgorithmIdentifier<AnyRef<'static>> = pkcs8::ALGORITHM_ID

AlgorithmIdentifier for this structure.

type Params = AnyRef<'static>

Algorithm parameters.

impl Clone for Signature

fn clone(&self) -> Signature

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Signature

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

Formats the value using the given formatter.

impl Display for Signature

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

Formats the value using the given formatter.

impl From<&[u8; 64]> for Signature

fn from(bytes: &[u8; 64]) -> Signature

Converts to this type from the input type.

impl From<[u8; 64]> for Signature

fn from(bytes: [u8; 64]) -> Signature

Converts to this type from the input type.

impl From<InternalSignature> for Signature

fn from(sig: InternalSignature) -> Signature

Converts to this type from the input type.

impl FromStr for Signature

Decode a signature from hexadecimal.

Upper and lower case hexadecimal are both accepted, however mixed case is rejected.

type Err = Error

The associated error which can be returned from parsing.

fn from_str(hex: &str) -> Result<Signature, Error>

Parses a string s to return a value of this type.

impl Hash for Signature

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl LowerHex for Signature

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

Formats the value using the given formatter.

impl MultipartSigner<Signature> for SigningKey

fn try_multipart_sign( &self, message: &[&[u8]], ) -> Result<Signature, SignatureError>

Equivalent of Signer::try_sign() but the message is provided in non-contiguous byte slices.

fn multipart_sign(&self, msg: &[&[u8]]) -> S

Equivalent of Signer::sign() but the message is provided in non-contiguous byte slices.

impl MultipartVerifier<Signature> for SigningKey

fn multipart_verify( &self, message: &[&[u8]], signature: &Signature, ) -> Result<(), SignatureError>

Equivalent of Verifier::verify() but the message is provided in non-contiguous byte slices.

impl MultipartVerifier<Signature> for VerifyingKey

fn multipart_verify( &self, message: &[&[u8]], signature: &Signature, ) -> Result<(), SignatureError>

Equivalent of Verifier::verify() but the message is provided in non-contiguous byte slices.

impl PartialEq for Signature

fn eq(&self, other: &Signature) -> 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 SignatureBitStringEncoding for Signature

Available on crate features alloc and pkcs8 only.

fn to_bitstring(&self) -> Result<BitString, Error>

BitString encoding for this signature.

impl SignatureEncoding for Signature

type Repr = [u8; 64]

Byte representation of a signature.

fn to_bytes(&self) -> [u8; 64]

Encode signature as its byte representation.

fn to_vec(&self) -> Vec<u8>

Encode signature as a byte vector.

fn encoded_len(&self) -> usize

Get the length of this signature when encoded.

impl Signer<Signature> for SigningKey

fn try_sign(&self, message: &[u8]) -> Result<Signature, SignatureError>

Sign a message with this signing key’s secret key.

fn sign(&self, msg: &[u8]) -> S

Sign the given message and return a digital 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<Signature, Error>

Performs the conversion.

impl TryFrom<&Signature> for InternalSignature

type Error = Error

The type returned in the event of a conversion error.

fn try_from(sig: &Signature) -> Result<InternalSignature, SignatureError>

Performs the conversion.

impl UpperHex for Signature

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

Formats the value using the given formatter.

impl Verifier<Signature> for SigningKey

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

Verify a signature on a message with this signing key’s public key.

impl Verifier<Signature> for VerifyingKey

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

Verify a signature on a message with this keypair’s public key.

Return

Returns Ok(()) if the signature is valid, and Err otherwise.

impl Copy for Signature

impl Eq for Signature

impl StructuralPartialEq for Signature