Struct starsig::Signature

pub struct Signature {
    pub s: Scalar,
    pub R: CompressedRistretto,
}

A Schnorr signature.

Fields

s: Scalar

Signature using nonce, message, and private key

R: CompressedRistretto

Nonce commitment

Methods

impl Signature

pub fn from_bytes(sig: impl AsRefExt) -> Result<Self, StarsigError>

Decodes a signature from a 64-byte slice.

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

Encodes the signature as a 64-byte array.

impl Signature

pub fn sign(transcript: &mut Transcript, privkey: Scalar) -> Signature

Creates a signature for a single private key and single message

pub fn verify(
    &self,
    transcript: &mut Transcript,
    pubkey: VerificationKey
) -> Result<(), StarsigError>

Verifies the signature over a transcript using the provided verification key. Transcript should be in the same state as it was during the sign call that created the signature.

pub fn verify_batched(
    &self,
    transcript: &mut Transcript,
    pubkey: VerificationKey,
    batch: &mut impl BatchVerification
)

Verifies the signature against a given verification key in a batch. Transcript should be in the same state as it was during the sign call that created the signature.

impl Signature

pub fn sign_message(
    label: &'static [u8],
    message: &[u8],
    privkey: Scalar
) -> Signature

Signs a message with a given domain-separation label. This is a simpler byte-oriented API over more flexible Transcript-based API. Internally it creates a Transcript instance labelled "Starsig.sign_message", and appends to it message bytes labelled with a user-provided label.

pub fn verify_message(
    &self,
    label: &'static [u8],
    message: &[u8],
    pubkey: VerificationKey
) -> Result<(), StarsigError>

Verifies the signature over a message using the provided verification key. Internally it creates a Transcript instance labelled "Starsig.sign_message", and appends to it message bytes labelled with a user-provided label.

pub fn verify_message_batched(
    &self,
    label: &'static [u8],
    message: &[u8],
    pubkey: VerificationKey,
    batch: &mut impl BatchVerification
)

Verifies the signature over a message using the provided verification key. Transcript should be in the same state as it was during the sign call that created the signature.

Trait Implementations

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 Debug for Signature

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

Formats the value using the given formatter.

impl Serialize for Signature

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for Signature

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.