diff options
Diffstat (limited to 'src/lib/entropy/entropy_srcs.cpp')
| -rw-r--r-- | src/lib/entropy/entropy_srcs.cpp | 69 |
1 files changed, 45 insertions, 24 deletions
diff --git a/src/lib/entropy/entropy_srcs.cpp b/src/lib/entropy/entropy_srcs.cpp index d9d5cfe4b..76546c5da 100644 --- a/src/lib/entropy/entropy_srcs.cpp +++ b/src/lib/entropy/entropy_srcs.cpp @@ -8,6 +8,10 @@ #include <botan/entropy_src.h> #include <botan/rng.h> +#if defined(BOTAN_HAS_SYSTEM_RNG) + #include <botan/system_rng.h> +#endif + #if defined(BOTAN_HAS_ENTROPY_SRC_RDRAND) #include <botan/internal/rdrand.h> #endif @@ -20,10 +24,6 @@ #include <botan/internal/dev_random.h> #endif -#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI) - #include <botan/internal/es_capi.h> -#endif - #if defined(BOTAN_HAS_ENTROPY_SRC_WIN32) #include <botan/internal/es_win32.h> #endif @@ -42,65 +42,86 @@ namespace Botan { +#if defined(BOTAN_HAS_SYSTEM_RNG) + +namespace { + +class System_RNG_EntropySource : public Entropy_Source + { + public: + size_t poll(RandomNumberGenerator& rng) override + { + const size_t poll_bits = BOTAN_RNG_RESEED_POLL_BITS; + rng.reseed_from_rng(system_rng(), poll_bits); + return poll_bits; + } + + std::string name() const override { return system_rng().name(); } + }; + +} + +#endif + std::unique_ptr<Entropy_Source> Entropy_Source::create(const std::string& name) { - if(name == "rdrand") +#if defined(BOTAN_HAS_SYSTEM_RNG) + if(name == "system_rng" || name == "win32_cryptoapi") { + return std::unique_ptr<Entropy_Source>(new System_RNG_EntropySource); + } +#endif + #if defined(BOTAN_HAS_ENTROPY_SRC_RDRAND) + if(name == "rdrand") + { return std::unique_ptr<Entropy_Source>(new Intel_Rdrand); -#endif } +#endif +#if defined(BOTAN_HAS_ENTROPY_SRC_RDSEED) if(name == "rdseed") { -#if defined(BOTAN_HAS_ENTROPY_SRC_RDSEED) return std::unique_ptr<Entropy_Source>(new Intel_Rdseed); -#endif } +#endif +#if defined(BOTAN_HAS_ENTROPY_SRC_DARWIN_SECRANDOM) if(name == "darwin_secrandom") { -#if defined(BOTAN_HAS_ENTROPY_SRC_DARWIN_SECRANDOM) return std::unique_ptr<Entropy_Source>(new Darwin_SecRandom); -#endif } +#endif +#if defined(BOTAN_HAS_ENTROPY_SRC_GETENTROPY) if(name == "getentropy") { -#if defined(BOTAN_HAS_ENTROPY_SRC_GETENTROPY) return std::unique_ptr<Entropy_Source>(new Getentropy); -#endif } +#endif +#if defined(BOTAN_HAS_ENTROPY_SRC_DEV_RANDOM) if(name == "dev_random") { -#if defined(BOTAN_HAS_ENTROPY_SRC_DEV_RANDOM) return std::unique_ptr<Entropy_Source>(new Device_EntropySource(BOTAN_SYSTEM_RNG_POLL_DEVICES)); -#endif } - - if(name == "win32_cryptoapi") - { -#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI) - return std::unique_ptr<Entropy_Source>(new Win32_CAPI_EntropySource("RSA_FULL")); #endif - } +#if defined(BOTAN_HAS_ENTROPY_SRC_PROC_WALKER) if(name == "proc_walk") { -#if defined(BOTAN_HAS_ENTROPY_SRC_PROC_WALKER) const std::string root_dir = BOTAN_ENTROPY_PROC_FS_PATH; if(!root_dir.empty()) return std::unique_ptr<Entropy_Source>(new ProcWalking_EntropySource(root_dir)); -#endif } +#endif +#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32) if(name == "system_stats") { -#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32) return std::unique_ptr<Entropy_Source>(new Win32_EntropySource); -#endif } +#endif return std::unique_ptr<Entropy_Source>(); } |