Trait concrete_core::specification::engines::LweKeyswitchKeyCreationEngine

pub trait LweKeyswitchKeyCreationEngine<InputSecretKey, OutputSecretKey, KeyswitchKey>: AbstractEngine where
    InputSecretKey: LweSecretKeyEntity,
    OutputSecretKey: LweSecretKeyEntity,
    KeyswitchKey: LweKeyswitchKeyEntity<InputKeyDistribution = InputSecretKey::KeyDistribution, OutputKeyDistribution = OutputSecretKey::KeyDistribution>, {
    fn create_lwe_keyswitch_key(
        &mut self,
        input_key: &InputSecretKey,
        output_key: &OutputSecretKey,
        decomposition_level_count: DecompositionLevelCount,
        decomposition_base_log: DecompositionBaseLog,
        noise: Variance
    ) -> Result<KeyswitchKey, LweKeyswitchKeyCreationError<Self::EngineError>>;
    unsafe fn create_lwe_keyswitch_key_unchecked(
        &mut self,
        input_key: &InputSecretKey,
        output_key: &OutputSecretKey,
        decomposition_level_count: DecompositionLevelCount,
        decomposition_base_log: DecompositionBaseLog,
        noise: Variance
    ) -> KeyswitchKey;
}

A trait for engines creating LWE keyswitch keys.

Semantics

This pure operation creates an LWE keyswitch key allowing to switch from the input_key LWE secret key to the output_key LWE secret key.

Formal Definition

cf here

Required Methods

fn create_lwe_keyswitch_key(
    &mut self,
    input_key: &InputSecretKey,
    output_key: &OutputSecretKey,
    decomposition_level_count: DecompositionLevelCount,
    decomposition_base_log: DecompositionBaseLog,
    noise: Variance
) -> Result<KeyswitchKey, LweKeyswitchKeyCreationError<Self::EngineError>>

Creates an LWE keyswitch key.

unsafe fn create_lwe_keyswitch_key_unchecked(
    &mut self,
    input_key: &InputSecretKey,
    output_key: &OutputSecretKey,
    decomposition_level_count: DecompositionLevelCount,
    decomposition_base_log: DecompositionBaseLog,
    noise: Variance
) -> KeyswitchKey

Unsafely creates an LWE keyswitch key.

Safety

For the general safety concerns regarding this operation, refer to the different variants of LweKeyswitchKeyCreationError. For safety concerns specific to an engine, refer to the implementer safety section.

Implementors

impl LweKeyswitchKeyCreationEngine<LweSecretKey32, LweSecretKey32, LweKeyswitchKey32> for DefaultEngine

Description:

Implementation of LweKeyswitchKeyCreationEngine for DefaultEngine that operates on 32 bits integers.

impl LweKeyswitchKeyCreationEngine<LweSecretKey64, LweSecretKey64, LweKeyswitchKey64> for DefaultEngine

Description:

Implementation of LweKeyswitchKeyCreationEngine for DefaultEngine that operates on 64 bits integers.