/* * (C) 2015,2017 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ #include #include #include #include #include extern "C" { using namespace Botan_FFI; int botan_rng_init(botan_rng_t* rng_out, const char* rng_type) { return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() -> int { if(rng_out == nullptr) return BOTAN_FFI_ERROR_NULL_POINTER; const std::string rng_type_s(rng_type ? rng_type : "system"); std::unique_ptr rng; if(rng_type_s == "system") rng.reset(new Botan::System_RNG); else if(rng_type_s == "user") rng.reset(new Botan::AutoSeeded_RNG); else return BOTAN_FFI_ERROR_BAD_PARAMETER; *rng_out = new botan_rng_struct(rng.release()); return BOTAN_FFI_SUCCESS; }); } int botan_rng_destroy(botan_rng_t rng) { return BOTAN_FFI_CHECKED_DELETE(rng); } int botan_rng_get(botan_rng_t rng, uint8_t* out, size_t out_len) { return BOTAN_FFI_DO(Botan::RandomNumberGenerator, rng, r, { r.randomize(out, out_len); }); } int botan_rng_reseed(botan_rng_t rng, size_t bits) { return BOTAN_FFI_DO(Botan::RandomNumberGenerator, rng, r, { r.reseed_from_rng(Botan::system_rng(), bits); }); } int botan_rng_add_entropy(botan_rng_t rng, const uint8_t* input, size_t len) { return BOTAN_FFI_DO(Botan::RandomNumberGenerator, rng, r, { r.add_entropy(input, len); }); } }