Struct TrustedDealerBuilder 

pub struct TrustedDealerBuilder<E>
where
    E: Curve,
{ /* private fields */ }

Trusted dealer builder

Implementations

impl<E> TrustedDealerBuilder<E>

where E: Curve,

pub fn new(n: u16) -> TrustedDealerBuilder<E>

Construct a trusted dealer builder

Takes amount of key shares n to be generated

pub fn set_threshold(self, t: Option<u16>) -> TrustedDealerBuilder<E>

Sets threshold value

If threshold is Some(_), resulting key shares will be generated using t-out-of-n VSS scheme. If it’s None, trusted dealer will generate additive key shares in n-out-ouf-n scheme.

Note that setting t=Some(n) is not the same as setting t=None. Both produce n-out-of-n key shares, but t=Some(n) mocks threshold key generation with threshold=n, t=None mock non-threshold key generation.

Default: None

pub fn set_shared_secret_key( self, sk: NonZero<SecretScalar<E>>, ) -> TrustedDealerBuilder<E>

Sets shared secret key to be generated

Resulting key shares will share specified secret key.

pub fn hd_wallet(self, v: bool) -> TrustedDealerBuilder<E>

Specifies that the key being generated shall support HD derivation

pub fn generate_shares( self, rng: &mut (impl RngCore + CryptoRng), ) -> Result<Vec<Valid<DirtyCoreKeyShare<E>>>, TrustedDealerError>

Generates CoreKeyShares

For Shamir secret sharing, it’s shared at points 1 to n

Returns error if provided inputs are invalid, or if internal error has occurred.

pub fn generate_shares_at_random( self, rng: &mut (impl RngCore + CryptoRng), ) -> Result<Vec<Valid<DirtyCoreKeyShare<E>>>, TrustedDealerError>

Generates CoreKeyShares shared at random points

For Shamir secret sharing, the points at which the value is shared at are chosen at random between 1 and u16::MAX. For additive shares, this is the same as TrustedDealerBuilder::generate_shares

Returns error if provided inputs are invalid, or if internal error has occurred.

pub fn generate_shares_at( self, preimages: Vec<NonZero<Scalar<E>>>, rng: &mut (impl RngCore + CryptoRng), ) -> Result<Vec<Valid<DirtyCoreKeyShare<E>>>, TrustedDealerError>

Generates CoreKeyShares shared at preimages provided. Each share is going to have the given preimages as its I component.

Preimages are ignored for additive key shares.

Returns error if provided inputs are invalid, or if internal error has occurred.