Struct bitcoin_serai::crypto::Schnorr

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pub struct Schnorr(/* private fields */);
Available on crate features std and hazmat only.
Expand description

BIP-340 Schnorr signature algorithm.

This must be used with a ThresholdKeys whose group key is even. If it is odd, this will panic.

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impl Schnorr

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pub fn new() -> Schnorr

Construct a Schnorr algorithm continuing the specified transcript.

Trait Implementations§

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impl Algorithm<Secp256k1> for Schnorr

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type Transcript = <Schnorr<Secp256k1, IetfTranscript, Hram> as Algorithm<Secp256k1>>::Transcript

The transcript format this algorithm uses. This likely should NOT be the IETF-compatible transcript included in this crate.
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type Addendum = ()

Serializable addendum, used in algorithms requiring more data than just the nonces.
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type Signature = [u8; 64]

The resulting type of the signatures this algorithm will produce.
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fn transcript(&mut self) -> &mut Self::Transcript

Obtain a mutable borrow of the underlying transcript.
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fn nonces(&self) -> Vec<Vec<ProjectivePoint>>

Obtain the list of nonces to generate, as specified by the generators to create commitments against per-nonce. Read more
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fn preprocess_addendum<R: RngCore + CryptoRng>( &mut self, rng: &mut R, keys: &ThresholdKeys<Secp256k1>, )

Generate an addendum to FROST“s preprocessing stage.
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fn read_addendum<R: Read>(&self, reader: &mut R) -> Result<Self::Addendum>

Read an addendum from a reader.
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fn process_addendum( &mut self, view: &ThresholdView<Secp256k1>, i: Participant, addendum: (), ) -> Result<(), FrostError>

Process the addendum for the specified participant. Guaranteed to be called in order.
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fn sign_share( &mut self, params: &ThresholdView<Secp256k1>, nonce_sums: &[Vec<<Secp256k1 as Ciphersuite>::G>], nonces: Vec<Zeroizing<<Secp256k1 as Ciphersuite>::F>>, msg: &[u8], ) -> <Secp256k1 as Ciphersuite>::F

Sign a share with the given secret/nonce. The secret will already have been its lagrange coefficient applied so it is the necessary key share. The nonce will already have been processed into the combined form d + (e * p).
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fn verify( &self, group_key: ProjectivePoint, nonces: &[Vec<ProjectivePoint>], sum: Scalar, ) -> Option<Self::Signature>

Verify a signature.
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fn verify_share( &self, verification_share: ProjectivePoint, nonces: &[Vec<ProjectivePoint>], share: Scalar, ) -> Result<Vec<(Scalar, ProjectivePoint)>, ()>

Verify a specific share given as a response. This function should return a series of pairs whose products should sum to zero for a valid share. Any error raised is treated as the share being invalid.
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impl Clone for Schnorr

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fn clone(&self) -> Schnorr

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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