Struct elastic_elgamal::sharing::Params

pub struct Params {
    pub shares: usize,
    pub threshold: usize,
}

Parameters of a threshold ElGamal encryption scheme.

Fields

shares: usize

Total number of shares / participants.

threshold: usize

Number of participants necessary to jointly restore the secret.

Implementations

impl Params

pub const fn new(shares: usize, threshold: usize) -> Self

Creates new parameters.

Panics

Panics if shares is equal to zero or if threshold is not in 1..=shares.

pub fn combine_shares<G: Group>( self, shares: impl IntoIterator<Item = (usize, VerifiableDecryption<G>)> ) -> Option<VerifiableDecryption<G>>

Combines shares decrypting the specified ciphertext. The shares must be provided together with the 0-based indexes of the participants they are coming from.

Returns the combined decryption, or None if the number of shares is insufficient.

Panics

Panics if any index in shares exceeds the maximum participant’s index as per params.

Trait Implementations

impl Clone for Params

fn clone(&self) -> Params

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Params

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Params

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Params

fn eq(&self, other: &Params) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Params

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Params

impl Eq for Params

impl StructuralPartialEq for Params