Struct Signature 

#[repr(C)]
pub struct Signature {
    pub(crate) R: [u8; 57],
    pub(crate) s: [u8; 57],
}

Ed448 signature.

This type represents a container for the byte serialization of an Ed448 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; 57]

s: [u8; 57]

Implementations

impl Signature

pub const BYTE_SIZE: usize

Size of an encoded Ed448 signature in bytes (114-bytes).

pub fn from_bytes(bytes: &[u8; 114]) -> Signature

Parse an Ed448 signature from a byte slice.

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

Parse an Ed448 signature from a byte slice.

Errors

• Returns Error if the input byte slice is not 114-bytes.

pub fn r_bytes(&self) -> &[u8; 57]

Bytes for the R component of a signature.

pub fn s_bytes(&self) -> &[u8; 57]

Bytes for the s component of a signature.

pub fn to_bytes(&self) -> [u8; 114]

Return the inner byte array.

pub fn from_components( r: impl Into<[u8; 57]>, s: impl Into<[u8; 57]>, ) -> Signature

Create a Signature from the serialized r and s component values which comprise the signature.

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<D> DigestSigner<D, Signature> for Context<'_, '_, SigningKey>

where D: Default + FixedOutput + HashMarker + Update,

fn try_sign_digest<F: Fn(&mut D) -> Result<(), Error>>( &self, f: F, ) -> Result<Signature, Error>

Attempt to sign a message by updating the received Digest with it, returning a digital signature on success, or an error if something went wrong.

fn sign_digest<F>(&self, f: F) -> S

where F: Fn(&mut D),

Sign a message by updating the received Digest with it, returning a signature.

impl<D> DigestSigner<D, Signature> for SigningKey

where D: Default + FixedOutput + HashMarker + Update,

fn try_sign_digest<F: Fn(&mut D) -> Result<(), Error>>( &self, f: F, ) -> Result<Signature, Error>

Attempt to sign a message by updating the received Digest with it, returning a digital signature on success, or an error if something went wrong.

fn sign_digest<F>(&self, f: F) -> S

where F: Fn(&mut D),

Sign a message by updating the received Digest with it, returning a signature.

impl<D> DigestVerifier<D, Signature> for Context<'_, '_, VerifyingKey>

where D: Default + FixedOutput + HashMarker + Update,

fn verify_digest<F: Fn(&mut D) -> Result<(), Error>>( &self, f: F, signature: &Signature, ) -> Result<(), Error>

Verify the signature against the received Digest output, by updating it with the message.

impl<D> DigestVerifier<D, Signature> for SigningKey

where D: Default + FixedOutput + HashMarker + Update,

fn verify_digest<F: Fn(&mut D) -> Result<(), Error>>( &self, f: F, signature: &Signature, ) -> Result<(), Error>

Verify the signature against the received Digest output, by updating it with the message.

impl<D> DigestVerifier<D, Signature> for VerifyingKey

where D: Default + FixedOutput + HashMarker + Update,

fn verify_digest<F: Fn(&mut D) -> Result<(), Error>>( &self, f: F, signature: &Signature, ) -> Result<(), Error>

Verify the signature against the received Digest output, by updating it with the message.

impl Display for Signature

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

Formats the value using the given formatter.

impl From<&[u8; 114]> for Signature

fn from(bytes: &[u8; 114]) -> Signature

Converts to this type from the input type.

impl From<[u8; 114]> for Signature

fn from(bytes: [u8; 114]) -> Signature

Converts to this type from the input type.

impl From<InnerSignature> for Signature

fn from(inner: InnerSignature) -> Self

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 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 PrehashSigner<Signature> for Context<'_, '_, SigningKey>

fn sign_prehash(&self, prehash: &[u8]) -> Result<Signature, Error>

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

impl PrehashSigner<Signature> for SigningKey

fn sign_prehash(&self, prehash: &[u8]) -> Result<Signature, Error>

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

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; 114]

Byte representation of a signature.

fn to_bytes(&self) -> [u8; 114]

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 Context<'_, '_, SigningKey>

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

Sign the given message and return a digital signature.

impl Signer<Signature> for SigningKey

fn try_sign(&self, 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(&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 InnerSignature

type Error = SigningError

The type returned in the event of a conversion error.

fn try_from(signature: &Signature) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Signature> for InnerSignature

type Error = SigningError

The type returned in the event of a conversion error.

fn try_from(signature: Signature) -> Result<Self, Self::Error>

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 Context<'_, '_, VerifyingKey>

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

Use Self (e.g. a verifying key) to verify that the provided signature is authentic for a given message bytestring.

impl Verifier<Signature> for SigningKey

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

Use Self (e.g. a verifying key) to verify that the provided signature is authentic for a given message bytestring.

impl Verifier<Signature> for VerifyingKey

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

Use Self (e.g. a verifying key) to verify that the provided signature is authentic for a given message bytestring.

impl Copy for Signature

impl Eq for Signature

impl StructuralPartialEq for Signature