Struct concrete_core::backends::default::entities::LwePublicKey32

pub struct LwePublicKey32(_);

A structure representing an LWE secret key with 32 bits of precision.

Trait Implementations

impl AbstractEntity for LwePublicKey32

type Kind = LwePublicKeyKind

The kind of the entity.

impl Clone for LwePublicKey32

fn clone(&self) -> LwePublicKey32

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for LwePublicKey32

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

Formats the value using the given formatter.

impl EntityDeserializationEngine<&[u8], LwePublicKey32> for DefaultSerializationEngine

Description:

Implementation of EntityDeserializationEngine for DefaultSerializationEngine that operates on 32 bits integers. It deserializes an LWE public key.

fn deserialize(
    &mut self,
    serialized: &[u8]
) -> Result<LwePublicKey32, EntityDeserializationError<Self::EngineError>>

Example:

use concrete_core::prelude::{LweDimension, LwePublicKeyZeroEncryptionCount, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
let noise = Variance(2_f64.powf(-50.));
let lwe_public_key_zero_encryption_count = LwePublicKeyZeroEncryptionCount(42);

// Unix seeder must be given a secret input.
// Here we just give it 0, which is totally unsafe.
const UNSAFE_SECRET: u128 = 0;
let mut engine = DefaultEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let lwe_secret_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;

let public_key: LwePublicKey32 = engine.generate_new_lwe_public_key(
    &lwe_secret_key,
    noise,
    lwe_public_key_zero_encryption_count,
)?;

let mut serialization_engine = DefaultSerializationEngine::new(())?;
let serialized = serialization_engine.serialize(&public_key)?;
let recovered = serialization_engine.deserialize(serialized.as_slice())?;
assert_eq!(public_key, recovered);

unsafe fn deserialize_unchecked(&mut self, serialized: &[u8]) -> LwePublicKey32

Unsafely deserializes an entity.

impl EntitySerializationEngine<LwePublicKey32, Vec<u8, Global>> for DefaultSerializationEngine

Description:

Implementation of EntitySerializationEngine for DefaultSerializationEngine that operates on 32 bits integers. It serializes an LWE public key.

fn serialize(
    &mut self,
    entity: &LwePublicKey32
) -> Result<Vec<u8>, EntitySerializationError<Self::EngineError>>

Example:

use concrete_core::prelude::{LweDimension, LwePublicKeyZeroEncryptionCount, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
let noise = Variance(2_f64.powf(-50.));
let lwe_public_key_zero_encryption_count = LwePublicKeyZeroEncryptionCount(42);

// Unix seeder must be given a secret input.
// Here we just give it 0, which is totally unsafe.
const UNSAFE_SECRET: u128 = 0;
let mut engine = DefaultEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let lwe_secret_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;

let public_key: LwePublicKey32 = engine.generate_new_lwe_public_key(
    &lwe_secret_key,
    noise,
    lwe_public_key_zero_encryption_count,
)?;

let mut serialization_engine = DefaultSerializationEngine::new(())?;
let serialized = serialization_engine.serialize(&public_key)?;
let recovered = serialization_engine.deserialize(serialized.as_slice())?;
assert_eq!(public_key, recovered);

unsafe fn serialize_unchecked(&mut self, entity: &LwePublicKey32) -> Vec<u8>

Unsafely serializes an entity.

impl LweCiphertextDiscardingPublicKeyEncryptionEngine<LwePublicKey32, Plaintext32, LweCiphertext32> for DefaultEngine

Description:

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

fn discard_encrypt_lwe_ciphertext_with_public_key(
    &mut self,
    key: &LwePublicKey32,
    output: &mut LweCiphertext32,
    input: &Plaintext32
) -> Result<(), LweCiphertextDiscardingPublicKeyEncryptionError<Self::EngineError>>

Example:

use concrete_core::prelude::*;

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
let lwe_public_key_zero_encryption_count = LwePublicKeyZeroEncryptionCount(7);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = 3_u32 << 20;
let noise = Variance(2_f64.powf(-50.));

// Unix seeder must be given a secret input.
// Here we just give it 0, which is totally unsafe.
const UNSAFE_SECRET: u128 = 0;
let mut engine = DefaultEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let secret_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let public_key: LwePublicKey32 = engine.generate_new_lwe_public_key(
    &secret_key,
    noise,
    lwe_public_key_zero_encryption_count,
)?;
let plaintext = engine.create_plaintext_from(&input)?;

let ciphertext_container = vec![0u32; lwe_dimension.to_lwe_size().0];

let mut ciphertext = engine.create_lwe_ciphertext_from(ciphertext_container)?;

engine.discard_encrypt_lwe_ciphertext_with_public_key(
    &public_key,
    &mut ciphertext,
    &plaintext,
)?;
assert_eq!(ciphertext.lwe_dimension(), lwe_dimension);

unsafe fn discard_encrypt_lwe_ciphertext_with_public_key_unchecked(
    &mut self,
    key: &LwePublicKey32,
    output: &mut LweCiphertext32,
    input: &Plaintext32
)

Unsafely encrypts an LWE ciphertext using a public key.

impl LwePublicKeyEntity for LwePublicKey32

fn lwe_dimension(&self) -> LweDimension

Returns the LWE dimension of the key.

fn lwe_zero_encryption_count(&self) -> LwePublicKeyZeroEncryptionCount

Returns the number of LWE encryption of 0 in the key.

impl LwePublicKeyGenerationEngine<LweSecretKey32, LwePublicKey32> for DefaultEngine

Description:

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

fn generate_new_lwe_public_key(
    &mut self,
    lwe_secret_key: &LweSecretKey32,
    noise: Variance,
    lwe_public_key_zero_encryption_count: LwePublicKeyZeroEncryptionCount
) -> Result<LwePublicKey32, LwePublicKeyGenerationError<Self::EngineError>>

Example:

use concrete_core::prelude::{LweDimension, LwePublicKeyZeroEncryptionCount, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
let noise = Variance(2_f64.powf(-50.));
let lwe_public_key_zero_encryption_count = LwePublicKeyZeroEncryptionCount(42);

// Unix seeder must be given a secret input.
// Here we just give it 0, which is totally unsafe.
const UNSAFE_SECRET: u128 = 0;
let mut engine = DefaultEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let lwe_secret_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;

let public_key: LwePublicKey32 = engine.generate_new_lwe_public_key(
    &lwe_secret_key,
    noise,
    lwe_public_key_zero_encryption_count,
)?;

assert_eq!(public_key.lwe_dimension(), lwe_dimension);
assert_eq!(
    public_key.lwe_zero_encryption_count(),
    lwe_public_key_zero_encryption_count
);

unsafe fn generate_new_lwe_public_key_unchecked(
    &mut self,
    lwe_secret_key: &LweSecretKey32,
    noise: Variance,
    lwe_public_key_zero_encryption_count: LwePublicKeyZeroEncryptionCount
) -> LwePublicKey32

Unsafely generates a new LWE public key.

impl LwePublicKeyGenerationEngine<LweSecretKey32, LwePublicKey32> for DefaultParallelEngine

Description:

Implementation of LwePublicKeyGenerationEngine for DefaultParallelEngine that operates on 32 bits integers.

fn generate_new_lwe_public_key(
    &mut self,
    lwe_secret_key: &LweSecretKey32,
    noise: Variance,
    lwe_public_key_zero_encryption_count: LwePublicKeyZeroEncryptionCount
) -> Result<LwePublicKey32, LwePublicKeyGenerationError<Self::EngineError>>

Example:

use concrete_core::prelude::{LweDimension, LwePublicKeyZeroEncryptionCount, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
let noise = Variance(2_f64.powf(-50.));
let lwe_public_key_zero_encryption_count = LwePublicKeyZeroEncryptionCount(42);

// Unix seeder must be given a secret input.
// Here we just give it 0, which is totally unsafe.
const UNSAFE_SECRET: u128 = 0;
let mut engine = DefaultEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let mut par_engine = DefaultParallelEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let lwe_secret_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;

let public_key: LwePublicKey32 = par_engine.generate_new_lwe_public_key(
    &lwe_secret_key,
    noise,
    lwe_public_key_zero_encryption_count,
)?;

assert_eq!(public_key.lwe_dimension(), lwe_dimension);
assert_eq!(
    public_key.lwe_zero_encryption_count(),
    lwe_public_key_zero_encryption_count
);

unsafe fn generate_new_lwe_public_key_unchecked(
    &mut self,
    lwe_secret_key: &LweSecretKey32,
    noise: Variance,
    lwe_public_key_zero_encryption_count: LwePublicKeyZeroEncryptionCount
) -> LwePublicKey32

Unsafely generates a new LWE public key.

impl PartialEq<LwePublicKey32> for LwePublicKey32

fn eq(&self, other: &LwePublicKey32) -> bool

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

const 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 Eq for LwePublicKey32

impl StructuralEq for LwePublicKey32

impl StructuralPartialEq for LwePublicKey32