Struct BfvEngine 

pub struct BfvEngine { /* private fields */ }

One BFV key/evaluation context using parameters selected for ~128-bit security.

Implementations

impl BfvEngine

pub fn generate_128_bit(key_id_hash: u64) -> Result<Self, HeError>

Generate a new BFV context. This is intentionally explicit and potentially expensive; PrivacyEngine::new() never generates cryptographic keys.

pub const fn key_id_hash(&self) -> u64

pub const fn parameter_fingerprint(&self) -> u64

pub const fn serialized_context_bytes(&self) -> usize

pub fn plaintext_modulus(&self) -> u64

pub fn signed_plaintext_limit(&self) -> i64

pub fn encrypt_i64( &self, store_id: u64, values: &[i64], ) -> Result<BfvCiphertext, HeError>

Encrypt signed packed integers with the public key.

pub fn add( &self, store_id: u64, left: &BfvCiphertext, right: &BfvCiphertext, ) -> Result<BfvCiphertext, HeError>

Homomorphic packed addition.

pub fn multiply( &self, store_id: u64, left: &BfvCiphertext, right: &BfvCiphertext, ) -> Result<BfvCiphertext, HeError>

Homomorphic packed element-wise multiplication followed by relinearization.

pub fn dot_product( &self, store_id: u64, left: &BfvCiphertext, right: &BfvCiphertext, ) -> Result<BfvCiphertext, HeError>

Homomorphic packed dot product. The result is repeated by the BFV inner-sum rotation circuit; callers read slot zero.

pub fn decrypt_i64_into( &self, ciphertext: &BfvCiphertext, out: &mut [i64], ) -> Result<usize, HeError>

Decrypt into a caller-owned buffer. Only the originally packed slots are copied.

pub fn serialize_into( &self, ciphertext: &BfvCiphertext, out: &mut [u8], ) -> Result<usize, HeError>

Serialize into a caller-owned external ciphertext store.

pub fn deserialize( &self, store_id: u64, slot_count: usize, bytes: &[u8], ) -> Result<BfvCiphertext, HeError>

Restore a ciphertext from external storage and recompute its commitment.

pub fn deserialize_verified( &self, reference: HeCiphertextRef, bytes: &[u8], ) -> Result<BfvCiphertext, HeError>

Restore bytes only when they match a previously issued ABI reference.