Enum sda_protocol::LinearSecretSharingScheme

pub enum LinearSecretSharingScheme {
    Additive {
        share_count: usize,
        modulus: i64,
    },
    PackedShamir {
        secret_count: usize,
        share_count: usize,
        privacy_threshold: usize,
        prime_modulus: i64,
        omega_secrets: i64,
        omega_shares: i64,
    },
}

Supported secret sharing schemes and their parameters.

Variants

Additive

Computionally efficient basic scheme.

Fields of Additive

share_count: usize	Number of shares to generate for each secret.
modulus: i64	Modulus specifying the additive group in which to operate.

PackedShamir

Packed Shamir scheme allowing for work to be distributed across many clerks.

Fields of PackedShamir

secret_count: usize	Dimension of secrets, i.e. number of components in vector.
share_count: usize	Number of shares to generate for each vector of secrets.
privacy_threshold: usize	Number of shares needed to reconstruct.
prime_modulus: i64	Prime number specifying the prime field in which to operate.
omega_secrets: i64	TODO
omega_shares: i64	TODO

Methods

impl LinearSecretSharingScheme

Derived properties of the secret sharing schemes.

fn input_size(&self) -> usize

Number of secrets shared together.

fn output_size(&self) -> usize

Number of shares output by the scheme, which must match the number of clerks in the aggregation's committee.

fn privacy_threshold(&self) -> usize

Upper bound for the number of clerks that must collaborate with the server before privacy is leaked.

fn reconstruction_threshold(&self) -> usize

Lower bound for the number of clerks needed to correctly reconstruct.

Trait Implementations

impl Clone for LinearSecretSharingScheme

fn clone(&self) -> LinearSecretSharingScheme

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LinearSecretSharingScheme

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for LinearSecretSharingScheme

impl PartialEq for LinearSecretSharingScheme

fn eq(&self, __arg_0: &LinearSecretSharingScheme) -> bool

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

fn ne(&self, __arg_0: &LinearSecretSharingScheme) -> bool

This method tests for !=.