Struct concrete_core::backends::default::entities::LweCiphertextVector32

source · [−]
pub struct LweCiphertextVector32(_);
Expand description

A structure representing a vector of LWE ciphertexts with 32 bits of precision.

Trait Implementations

The kind of the entity.
Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

Description:

Implementation of EntityDeserializationEngine for DefaultSerializationEngine that operates on 32 bits integers. It deserializes a LWE ciphertext vector entity.

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 3];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;

let mut ciphertext_vector: LweCiphertextVector32 =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

let mut serialization_engine = DefaultSerializationEngine::new(())?;
let serialized = serialization_engine.serialize(&ciphertext_vector)?;
let recovered = serialization_engine.deserialize(serialized.as_slice())?;
assert_eq!(ciphertext_vector, recovered);
Unsafely deserializes an entity. Read more

Description:

Implementation of EntitySerializationEngine for DefaultSerializationEngine that operates on 32 bits integers. It serializes a LWE ciphertext vector entity.

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 3];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;

let mut ciphertext_vector: LweCiphertextVector32 =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

let mut serialization_engine = DefaultSerializationEngine::new(())?;
let serialized = serialization_engine.serialize(&ciphertext_vector)?;
let recovered = serialization_engine.deserialize(serialized.as_slice())?;
assert_eq!(ciphertext_vector, recovered);
Unsafely serializes an entity. Read more

Description:

Implementation of LweCiphertextDiscardingBitExtractEngine for FftEngine that operates on 32 bits integers.

Example
use concrete_core::prelude::{
    DecompositionBaseLog, DecompositionLevelCount, GlweDimension, LweDimension, PolynomialSize,
    Variance, *,
};

// Here a hard-set encoding is applied (shift by 20 bits)
let input = 3_u32 << 20;
// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let (lwe_dim, glwe_dim, poly_size) = (LweDimension(4), GlweDimension(1), PolynomialSize(512));
let (dec_lc, dec_bl) = (DecompositionLevelCount(3), DecompositionBaseLog(5));
let extracted_bits_count = ExtractedBitsCount(1);
let delta_log = DeltaLog(5);
let noise = Variance(2_f64.powf(-50.));
let large_lwe_dim = LweDimension(glwe_dim.0 * poly_size.0);

// Unix seeder must be given a secret input.
// Here we just give it 0, and rely on /dev/random only for tests.
const UNSAFE_SECRET: u128 = 0;
let mut default_engine = DefaultEngine::new(Box::new(UnixSeeder::new(UNSAFE_SECRET)))?;
let mut fft_engine = FftEngine::new(())?;
let glwe_sk: GlweSecretKey32 =
    default_engine.generate_new_glwe_secret_key(glwe_dim, poly_size)?;
let input_lwe_sk: LweSecretKey32 =
    default_engine.transform_glwe_secret_key_to_lwe_secret_key(glwe_sk.clone())?;
let output_lwe_sk: LweSecretKey32 = default_engine.generate_new_lwe_secret_key(lwe_dim)?;
let bsk: LweBootstrapKey32 = default_engine.generate_new_lwe_bootstrap_key(
    &output_lwe_sk,
    &glwe_sk,
    dec_bl,
    dec_lc,
    noise,
)?;
let ksk: LweKeyswitchKey32 = default_engine.generate_new_lwe_keyswitch_key(
    &input_lwe_sk,
    &output_lwe_sk,
    dec_lc,
    dec_bl,
    noise,
)?;
let bsk: FftFourierLweBootstrapKey32 = fft_engine.convert_lwe_bootstrap_key(&bsk)?;
let plaintext = default_engine.create_plaintext_from(&input)?;
let input = default_engine.encrypt_lwe_ciphertext(&input_lwe_sk, &plaintext, noise)?;
let mut output = default_engine.zero_encrypt_lwe_ciphertext_vector(
    &output_lwe_sk,
    noise,
    LweCiphertextCount(extracted_bits_count.0),
)?;

fft_engine.discard_extract_bits_lwe_ciphertext(
    &mut output,
    &input,
    &bsk,
    &ksk,
    extracted_bits_count,
    delta_log,
)?;
assert_eq!(output.lwe_dimension(), lwe_dim);
assert_eq!(
    output.lwe_ciphertext_count(),
    LweCiphertextCount(extracted_bits_count.0)
);
Unsafely extract bits of an LWE ciphertext. Read more

Description:

Implementation of LweCiphertextVectorConsumingRetrievalEngine for DefaultEngine that returns the underlying slice of a LweCiphertextVector32 consuming it in the process

Example:
use concrete_core::prelude::{LweSize, *};

// Here we create a container outside of the engine
// Note that the size here is just for demonstration purposes and should not be chosen
// without proper security analysis for production
use concrete_core::commons::crypto::lwe::LweCiphertext;
let lwe_size = LweSize(128);
let lwe_count = LweCiphertextCount(8);
let mut owned_container = vec![0_u32; lwe_size.0 * lwe_count.0];
let original_vec_ptr = owned_container.as_ptr();

// 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 ciphertext_vector: LweCiphertextVector32 =
    engine.create_lwe_ciphertext_vector_from(owned_container, lwe_size)?;
let retrieved_container = engine.consume_retrieve_lwe_ciphertext_vector(ciphertext_vector)?;
assert_eq!(original_vec_ptr, retrieved_container.as_ptr());
Unsafely retrieves the content of the container from an LWE ciphertext vector, consuming it in the process. Read more

Description:

Implementation of LweCiphertextVectorCreationEngine for DefaultEngine which returns a LweCiphertextVector32.

Example:
use concrete_core::prelude::*;

// Here we create a container outside of the engine
// Note that the size here is just for demonstration purposes and should not be chosen
// without proper security analysis for production
let lwe_size = LweSize(16);
let lwe_count = LweCiphertextCount(3);
let mut owned_container = vec![0_u32; lwe_size.0 * lwe_count.0];

// 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 ciphertext_vector: LweCiphertextVector32 =
    engine.create_lwe_ciphertext_vector_from(owned_container, lwe_size)?;
Unsafely creates an LWE ciphertext vector from an arbitrary container. Read more

Description:

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

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, PlaintextCount, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 18];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;
let ciphertext_vector: LweCiphertextVector32 =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

let decrypted_plaintext_vector =
    engine.decrypt_lwe_ciphertext_vector(&key, &ciphertext_vector)?;

assert_eq!(
    decrypted_plaintext_vector.plaintext_count(),
    PlaintextCount(18)
);
Unsafely decrypts an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20; 8];
let noise = Variance::from_variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector = engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;
let mut output_ciphertext_vector =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

engine.discard_add_lwe_ciphertext_vector(
    &mut output_ciphertext_vector,
    &ciphertext_vector,
    &ciphertext_vector,
)?;
assert_eq!(output_ciphertext_vector.lwe_dimension(), lwe_dimension);
Unsafely adds two LWE ciphertext vectors. Read more

Description:

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

Example:
use concrete_core::prelude::{LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20; 8];
let weights_input = vec![2_u32; 8];
let bias_input = 8_u32 << 20;
let noise = Variance::from_variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let weights: CleartextVector32 = engine.create_cleartext_vector_from(&input_vector)?;
let bias: Plaintext32 = engine.create_plaintext_from(&bias_input)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector = engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;
let mut output_ciphertext = engine.zero_encrypt_lwe_ciphertext(&key, noise)?;

engine.discard_affine_transform_lwe_ciphertext_vector(
    &mut output_ciphertext,
    &ciphertext_vector,
    &weights,
    &bias,
)?;
assert_eq!(output_ciphertext.lwe_dimension(), lwe_dimension);
Unsafely performs the affine transform of an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, PlaintextCount, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 18];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let mut plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;
let ciphertext_vector: LweCiphertextVector32 =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

engine.discard_decrypt_lwe_ciphertext_vector(
    &key,
    &mut plaintext_vector,
    &ciphertext_vector,
)?;
assert_eq!(plaintext_vector.plaintext_count(), PlaintextCount(18));
Unsafely decrypts an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::Variance;
use concrete_core::prelude::{LweCiphertextCount, LweDimension};
use concrete_core::prelude::*;

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 3];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;
let mut ciphertext_vector: LweCiphertextVector32 =
    engine.zero_encrypt_lwe_ciphertext_vector(&key, noise, LweCiphertextCount(3))?;

engine.discard_encrypt_lwe_ciphertext_vector(
    &key,
    &mut ciphertext_vector,
    &plaintext_vector,
    noise,
)?;
assert_eq!(ciphertext_vector.lwe_dimension(), lwe_dimension);
assert_eq!(
Unsafely encryprs an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20; 8];
let noise = Variance::from_variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector = engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;
let mut output_ciphertext_vector =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

engine.discard_sub_lwe_ciphertext_vector(
    &mut output_ciphertext_vector,
    &ciphertext_vector,
    &ciphertext_vector,
)?;
assert_eq!(output_ciphertext_vector.lwe_dimension(), lwe_dimension);
Unsafely subtracts two LWE ciphertext vectors. Read more

Description:

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

Example:
use concrete_core::prelude::Variance;
use concrete_core::prelude::{LweCiphertextCount, LweDimension};
use concrete_core::prelude::*;

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 3];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;

let mut ciphertext_vector: LweCiphertextVector32 =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;
assert_eq!(ciphertext_vector.lwe_dimension(), lwe_dimension);
assert_eq!(
Unsafely encrypts an LWE ciphertext vector. Read more
Returns the LWE dimension of the ciphertexts.
Returns the number of ciphertexts contained in the vector.

Description:

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

Example:
use concrete_core::prelude::{LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20; 8];
let noise = Variance::from_variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector = engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;
let mut output_ciphertext_vector =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

engine.fuse_add_lwe_ciphertext_vector(&mut output_ciphertext_vector, &ciphertext_vector)?;
assert_eq!(output_ciphertext_vector.lwe_dimension(), lwe_dimension);
Unsafely add two LWE ciphertext vectors. Read more

Description:

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

Example:
use concrete_core::prelude::{LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20; 8];
let noise = Variance::from_variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector = engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;
let mut output_ciphertext_vector =
    engine.encrypt_lwe_ciphertext_vector(&key, &plaintext_vector, noise)?;

engine.fuse_sub_lwe_ciphertext_vector(&mut output_ciphertext_vector, &ciphertext_vector)?;
assert_eq!(output_ciphertext_vector.lwe_dimension(), lwe_dimension);
Unsafely subtracts two LWE ciphertext vectors. Read more

Description:

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

Example:
use concrete_core::prelude::{
    DecompositionBaseLog, DecompositionLevelCount, LweDimension, Variance, *,
};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let input_lwe_dimension = LweDimension(6);
let output_glwe_dimension = GlweDimension(3);
let decomposition_level_count = DecompositionLevelCount(2);
let decomposition_base_log = DecompositionBaseLog(8);
let polynomial_size = PolynomialSize(256);
let noise = Variance(2_f64.powf(-25.));
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20, 256];

// 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 input_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(input_lwe_dimension)?;
let output_key: GlweSecretKey32 =
    engine.generate_new_glwe_secret_key(output_glwe_dimension, polynomial_size)?;
let packing_keyswitch_key = engine.generate_new_lwe_packing_keyswitch_key(
    &input_key,
    &output_key,
    decomposition_level_count,
    decomposition_base_log,
    noise,
)?;
let plaintext_vector = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector =
    engine.encrypt_lwe_ciphertext_vector(&input_key, &plaintext_vector, noise)?;
let mut ciphertext_output = engine.zero_encrypt_glwe_ciphertext(&output_key, noise)?;

engine.discard_packing_keyswitch_lwe_ciphertext_vector(
    &mut ciphertext_output,
    &ciphertext_vector,
    &packing_keyswitch_key,
)?;
assert_eq!(ciphertext_output.glwe_dimension(), output_glwe_dimension);
Unsafely packing keyswitches an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{
    DecompositionBaseLog, DecompositionLevelCount, LweDimension, Variance, *,
};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let input_lwe_dimension = LweDimension(6);
let output_glwe_dimension = GlweDimension(3);
let decomposition_level_count = DecompositionLevelCount(2);
let decomposition_base_log = DecompositionBaseLog(8);
let polynomial_size = PolynomialSize(256);
let noise = Variance(2_f64.powf(-25.));
// Here a hard-set encoding is applied (shift by 20 bits)
let input_vector = vec![3_u32 << 20, 256];

// 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 input_key: LweSecretKey32 = engine.generate_new_lwe_secret_key(input_lwe_dimension)?;
let output_key: GlweSecretKey32 =
    engine.generate_new_glwe_secret_key(output_glwe_dimension, polynomial_size)?;
let val = vec![1_u32; output_key.polynomial_size().0];
let polynomial: CleartextVector32 = engine.create_cleartext_vector_from(&val)?;
let private_functional_packing_keyswitch_key = engine
    .generate_new_lwe_private_functional_packing_keyswitch_key(
        &input_key,
        &output_key,
        decomposition_level_count,
        decomposition_base_log,
        StandardDev(noise.get_standard_dev()),
        &|x| x,
        &polynomial,
    )?;
let plaintext_vector = engine.create_plaintext_vector_from(&input_vector)?;
let ciphertext_vector =
    engine.encrypt_lwe_ciphertext_vector(&input_key, &plaintext_vector, noise)?;
let mut ciphertext_output = engine.zero_encrypt_glwe_ciphertext(&output_key, noise)?;

engine.discard_private_functional_packing_keyswitch_lwe_ciphertext_vector(
    &mut ciphertext_output,
    &ciphertext_vector,
    &private_functional_packing_keyswitch_key,
)?;
assert_eq!(ciphertext_output.glwe_dimension(), output_glwe_dimension);
Unsafely keyswitches an LWE ciphertext vector using a private functional packing keyswitch key. Read more
Example:

use concrete_core::prelude::{LweSize, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_size = LweSize(10);
let input = vec![3_u32 << 20; 3];

// 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 plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;
// DISCLAIMER: trivial encryption is NOT secure, and DOES NOT hide the message at all.
let ciphertext_vector: LweCiphertextVector32 =
    engine.trivially_encrypt_lwe_ciphertext_vector(lwe_size, &plaintext_vector)?;
let output: PlaintextVector32 =
    engine.trivially_decrypt_lwe_ciphertext_vector(&ciphertext_vector)?;

assert_eq!(output.plaintext_count(), PlaintextCount(3));
Unsafely trivially decrypts an LWE ciphertext vector into a plaintext vector. Read more
Example:

use concrete_core::prelude::{LweSize, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_size = LweSize(10);
let input = vec![3_u32 << 20; 3];

// 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 plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;
// DISCLAIMER: trivial encryption is NOT secure, and DOES NOT hide the message at all.
let ciphertext_vector: LweCiphertextVector32 =
    engine.trivially_encrypt_lwe_ciphertext_vector(lwe_size, &plaintext_vector)?;

assert_eq!(ciphertext_vector.lwe_dimension().to_lwe_size(), lwe_size);
assert_eq!(
    ciphertext_vector.lwe_ciphertext_count().0,
    plaintext_vector.plaintext_count().0
);
Unsafely creates the trivial LWE encryption of the plaintext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
let ciphertext_count = LweCiphertextCount(3);
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;

let ciphertext_vector =
    engine.zero_encrypt_lwe_ciphertext_vector(&key, noise, ciphertext_count)?;
assert_eq!(ciphertext_vector.lwe_dimension(), lwe_dimension);
assert_eq!(ciphertext_vector.lwe_ciphertext_count(), ciphertext_count);
Unsafely encrypts zeros in an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(2);
let ciphertext_count = LweCiphertextCount(3);
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;

let ciphertext_vector =
    par_engine.zero_encrypt_lwe_ciphertext_vector(&key, noise, ciphertext_count)?;
assert_eq!(ciphertext_vector.lwe_dimension(), lwe_dimension);
assert_eq!(ciphertext_vector.lwe_ciphertext_count(), ciphertext_count);
Unsafely encrypts zeros in an LWE ciphertext vector. Read more

Description:

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

Example:
use concrete_core::prelude::{LweCiphertextCount, LweDimension, Variance, *};

// DISCLAIMER: the parameters used here are only for test purpose, and are not secure.
let lwe_dimension = LweDimension(6);
// Here a hard-set encoding is applied (shift by 20 bits)
let input = vec![3_u32 << 20; 3];
let noise = Variance(2_f64.powf(-25.));

// 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 key: LweSecretKey32 = engine.generate_new_lwe_secret_key(lwe_dimension)?;
let plaintext_vector: PlaintextVector32 = engine.create_plaintext_vector_from(&input)?;

let mut seeded_ciphertext_vector: LweSeededCiphertextVector32 =
    engine.encrypt_lwe_seeded_ciphertext_vector(&key, &plaintext_vector, noise)?;

let ciphertext_vector = engine
    .transform_lwe_seeded_ciphertext_vector_to_lwe_ciphertext_vector(
        seeded_ciphertext_vector,
    )?;
assert_eq!(ciphertext_vector.lwe_dimension(), lwe_dimension);
Unsafely transforms an LWE seeded ciphertext vector into an LWE ciphertext vector Read more
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

Auto Trait Implementations

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Gets the TypeId of self. Read more
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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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Initializes a with the given initializer. Read more
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