Struct frost_dalek::keygen::IndividualPublicKey

pub struct IndividualPublicKey {
    pub index: u32,
    pub share: RistrettoPoint,
}

A public verification share for a participant.

Any participant can recalculate the public verification share, which is the public half of a SecretKey, of any other participant in the protocol.

Fields

index: u32

The participant index to which this key belongs.

share: RistrettoPoint

The public verification share.

Implementations

impl IndividualPublicKey

pub fn verify(
    &self,
    parameters: &Parameters,
    commitments: &[RistrettoPoint]
) -> Result<(), ()>

Any participant can compute the public verification share of any other participant.

This is done by re-computing each IndividualPublicKey as \(Y_i\) s.t.:

\[ Y_i = \prod_{j=1}^{n} \prod_{k=0}^{t-1} \phi_{jk}^{i^{k} \mod q} \]

for each Participant index \(i\).

Inputs

• The Parameters of this threshold signing instance, and
• A vector of commitments regarding the secret polynomial Coefficients that this IndividualPublicKey was generated with.

Returns

A Result with either an empty Ok or Err value, depending on whether or not the verification was successful.

Trait Implementations

impl Clone for IndividualPublicKey

pub fn clone(&self) -> IndividualPublicKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IndividualPublicKey

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

Formats the value using the given formatter.

impl From<&'_ SecretKey> for IndividualPublicKey

pub fn from(source: &SecretKey) -> IndividualPublicKey

Performs the conversion.