Changes in version 1.5.1.2 (2026-09-25)                 

  - Under R CMD check the package caps OpenFHE at two threads.

  - set_num_threads() now sets the cap through OpenFHE's own thread
    controls rather than the OpenMP runtime, and returns the cap in
    effect (invisibly).

  - The package now installs on musl-based Linux (Alpine).

  - rlang is declared in Imports.

  - Every handle the package passes between R and C++ now carries its
    type, and every binding checks that type before using the pointer.

  - bin_fhe_context() returns an object of the new BinFHEContext class
    instead of the base OpenFHEObject. The boolean-circuit context and
    the CryptoContext used by BFV, BGV, and CKKS are therefore distinct
    classes, and passing one where the other belongs is an error rather
    than a silent misuse.

  - OpenFHEObject, the base class, is now abstract. It was never useful
    to construct directly, and every handle now belongs to a concrete
    class.

  - decrypt() accepts its arguments in either order, matching the C++
    library, which declares both. decrypt(private_key, ciphertext) is
    now equivalent to decrypt(ciphertext, private_key).

                Changes in version 1.5.1.1 (2026-08-23)                 

  - Fixed undefined behavior in the vendored OpenFHE library reported by
    CRAN's UBSAN check platforms.
    RingGSWAccumulator::SignedDigitDecompose sign-extended a balanced
    digit by shifting a signed value into and past the sign bit, which
    is undefined in C++17. The vendored library now carries the upstream
    fix (OpenFHE PR #1238), which computes the same digits without
    signed shifts. Results are unchanged.

  - The eval_sign() example in the BinFHE vignette and its corresponding
    test are skipped on CRAN, where their bootstrapping-key generation
    dominated the check time. Both still run on CI and locally.

                 Changes in version 1.5.1 (2026-08-21)                  

Initial release. An R interface to the OpenFHE C++ library for fully
homomorphic encryption, with a binding surface that mirrors
openfhe-python.

  - Supports the BFV, BGV, and CKKS schemes for computation on encrypted
    integers and approximate reals, plus BinFHE (FHEW/TFHE) for Boolean
    circuits over encrypted bits.

  - Provides threshold (multiparty) FHE, including interactive
    bootstrapping, for computations shared across several key-holders.

  - Built on S7 classes and cpp11 bindings; the OpenFHE C++ library is
    vendored and built from source, so the package version tracks the
    library version.

  - Ships an API tour vignette plus worked examples of CKKS
    bootstrapping and BinFHE Boolean circuits.