TFHE-rs version 0.2.0

TFHE-rs v0.2.0 includes:

• New modules:

  • An integer module to manage homomorphic unsigned integers encrypting messages up to 256 bits;
  • A high-level API, including predefined homomorphic types and overloaded operators. A C binding is also available;

• New features in all modules:

  • Encryption key choice: In shortint and integer, the large LWE key is used by default. It is now possible to encrypt with the small one;
  • A smaller public encryption key: As a consequence of the previous point, a smaller secret encryption key implies a smaller public key;

• New features in core_crypto:

  • The ability to compute a PBS over 128-bit ciphertexts;
  • The choice of the ciphertext modulus: This can now be modified to use any powers of two smaller than 2^128;
  • Parallel Programmable Bootstrapping: A parallelized version of the bootstrapping is now available.