diff options
Diffstat (limited to 'src/lib/mac/mac.cpp')
| -rw-r--r-- | src/lib/mac/mac.cpp | 117 |
1 files changed, 86 insertions, 31 deletions
diff --git a/src/lib/mac/mac.cpp b/src/lib/mac/mac.cpp index a3917141d..70807b39f 100644 --- a/src/lib/mac/mac.cpp +++ b/src/lib/mac/mac.cpp @@ -6,7 +6,7 @@ */ #include <botan/mac.h> -#include <botan/internal/algo_registry.h> +#include <botan/scan_name.h> #include <botan/mem_ops.h> #if defined(BOTAN_HAS_CBC_MAC) @@ -35,18 +35,97 @@ namespace Botan { -std::unique_ptr<MessageAuthenticationCode> MessageAuthenticationCode::create(const std::string& algo_spec, - const std::string& provider) +std::unique_ptr<MessageAuthenticationCode> +MessageAuthenticationCode::create(const std::string& algo_spec, + const std::string& provider) { - return std::unique_ptr<MessageAuthenticationCode>(make_a<MessageAuthenticationCode>(MessageAuthenticationCode::Spec(algo_spec), provider)); + const SCAN_Name req(algo_spec); + +#if defined(BOTAN_HAS_HMAC) + if(req.algo_name() == "HMAC" && req.arg_count() == 1) + { + // TODO OpenSSL + if(provider.empty() || provider == "base") + { + if(auto h = HashFunction::create(req.arg(0))) + return std::unique_ptr<MessageAuthenticationCode>(new HMAC(h.release())); + } + } +#endif + +#if defined(BOTAN_HAS_POLY1305) + if(req.algo_name() == "Poly1305" && req.arg_count() == 0) + { + if(provider.empty() || provider == "base") + return std::unique_ptr<MessageAuthenticationCode>(new Poly1305); + } +#endif + +#if defined(BOTAN_HAS_SIPHASH) + if(req.algo_name() == "SipHash") + { + if(provider.empty() || provider == "base") + { + return std::unique_ptr<MessageAuthenticationCode>( + new SipHash(req.arg_as_integer(0, 2), req.arg_as_integer(1, 4))); + } + } +#endif + +#if defined(BOTAN_HAS_CMAC) + if((req.algo_name() == "CMAC" || req.algo_name() == "OMAC") && req.arg_count() == 1) + { + // TODO: OpenSSL CMAC + if(provider.empty() || provider == "base") + { + if(auto bc = BlockCipher::create(req.arg(0))) + return std::unique_ptr<MessageAuthenticationCode>(new CMAC(bc.release())); + } + } +#endif + + +#if defined(BOTAN_HAS_CBC_MAC) + if(req.algo_name() == "CBC-MAC" && req.arg_count() == 1) + { + if(provider.empty() || provider == "base") + { + if(auto bc = BlockCipher::create(req.arg(0))) + return std::unique_ptr<MessageAuthenticationCode>(new CBC_MAC(bc.release())); + } + } +#endif + +#if defined(BOTAN_HAS_ANSI_X919_MAC) + if(req.algo_name() == "X9.19-MAC") + { + if(provider.empty() || provider == "base") + { + return std::unique_ptr<MessageAuthenticationCode>(new ANSI_X919_MAC); + } + } +#endif + + return nullptr; } -std::vector<std::string> MessageAuthenticationCode::providers(const std::string& algo_spec) +std::vector<std::string> +MessageAuthenticationCode::providers(const std::string& algo_spec) { - return providers_of<MessageAuthenticationCode>(MessageAuthenticationCode::Spec(algo_spec)); + return probe_providers_of<MessageAuthenticationCode>(algo_spec, {"base", "openssl"}); } -MessageAuthenticationCode::~MessageAuthenticationCode() {} +//static +std::unique_ptr<MessageAuthenticationCode> +MessageAuthenticationCode::create_or_throw(const std::string& algo, + const std::string& provider) + { + if(auto mac = MessageAuthenticationCode::create(algo, provider)) + { + return mac; + } + throw Lookup_Error("MAC", algo, provider); + } /* * Default (deterministic) MAC verification operation @@ -61,28 +140,4 @@ bool MessageAuthenticationCode::verify_mac(const byte mac[], size_t length) return same_mem(our_mac.data(), mac, length); } -#if defined(BOTAN_HAS_CBC_MAC) -BOTAN_REGISTER_NAMED_T(MessageAuthenticationCode, "CBC-MAC", CBC_MAC, CBC_MAC::make); -#endif - -#if defined(BOTAN_HAS_CMAC) -BOTAN_REGISTER_NAMED_T(MessageAuthenticationCode, "CMAC", CMAC, CMAC::make); -#endif - -#if defined(BOTAN_HAS_HMAC) -BOTAN_REGISTER_NAMED_T(MessageAuthenticationCode, "HMAC", HMAC, HMAC::make); -#endif - -#if defined(BOTAN_HAS_POLY1305) -BOTAN_REGISTER_T_NOARGS(MessageAuthenticationCode, Poly1305); -#endif - -#if defined(BOTAN_HAS_SIPHASH) -BOTAN_REGISTER_NAMED_T_2LEN(MessageAuthenticationCode, SipHash, "SipHash", "base", 2, 4); -#endif - -#if defined(BOTAN_HAS_ANSI_X919_MAC) -BOTAN_REGISTER_NAMED_T(MessageAuthenticationCode, "X9.19-MAC", ANSI_X919_MAC, make_new_T<ANSI_X919_MAC>); -#endif - } |