diff options
Diffstat (limited to 'src/libs/3rdparty/botan/src/lib/pk_pad/emsa.cpp')
| -rw-r--r-- | src/libs/3rdparty/botan/src/lib/pk_pad/emsa.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/pk_pad/emsa.cpp b/src/libs/3rdparty/botan/src/lib/pk_pad/emsa.cpp new file mode 100644 index 0000000000..126e1421df --- /dev/null +++ b/src/libs/3rdparty/botan/src/lib/pk_pad/emsa.cpp @@ -0,0 +1,183 @@ +/* +* (C) 2015 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/emsa.h> +#include <botan/hash.h> +#include <botan/scan_name.h> +#include <botan/exceptn.h> + +#if defined(BOTAN_HAS_EMSA1) + #include <botan/emsa1.h> +#endif + +#if defined(BOTAN_HAS_EMSA_X931) + #include <botan/emsa_x931.h> +#endif + +#if defined(BOTAN_HAS_EMSA_PKCS1) + #include <botan/emsa_pkcs1.h> +#endif + +#if defined(BOTAN_HAS_EMSA_PSSR) + #include <botan/pssr.h> +#endif + +#if defined(BOTAN_HAS_EMSA_RAW) + #include <botan/emsa_raw.h> +#endif + +#if defined(BOTAN_HAS_ISO_9796) + #include <botan/iso9796.h> +#endif + +namespace Botan { + +AlgorithmIdentifier EMSA::config_for_x509(const Private_Key&, + const std::string&) const + { + throw Not_Implemented("Encoding " + name() + " not supported for signing X509 objects"); + } + +EMSA* get_emsa(const std::string& algo_spec) + { + SCAN_Name req(algo_spec); + +#if defined(BOTAN_HAS_EMSA1) + if(req.algo_name() == "EMSA1" && req.arg_count() == 1) + { + if(auto hash = HashFunction::create(req.arg(0))) + return new EMSA1(hash.release()); + } +#endif + +#if defined(BOTAN_HAS_EMSA_PKCS1) + if(req.algo_name() == "EMSA_PKCS1" || + req.algo_name() == "EMSA-PKCS1-v1_5" || + req.algo_name() == "EMSA3") + { + if(req.arg_count() == 2 && req.arg(0) == "Raw") + { + return new EMSA_PKCS1v15_Raw(req.arg(1)); + } + else if(req.arg_count() == 1) + { + if(req.arg(0) == "Raw") + { + return new EMSA_PKCS1v15_Raw; + } + else + { + if(auto hash = HashFunction::create(req.arg(0))) + { + return new EMSA_PKCS1v15(hash.release()); + } + } + } + } +#endif + +#if defined(BOTAN_HAS_EMSA_PSSR) + if(req.algo_name() == "PSSR" || + req.algo_name() == "EMSA-PSS" || + req.algo_name() == "PSS-MGF1" || + req.algo_name() == "EMSA4" || + req.algo_name() == "PSSR_Raw") + { + if(req.arg_count_between(1, 3)) + { + if(req.arg(1, "MGF1") != "MGF1") + return nullptr; // not supported + + if(auto h = HashFunction::create(req.arg(0))) + { + const size_t salt_size = req.arg_as_integer(2, h->output_length()); + + if(req.algo_name() == "PSSR_Raw") + return new PSSR_Raw(h.release(), salt_size); + else + return new PSSR(h.release(), salt_size); + } + } + } +#endif + +#if defined(BOTAN_HAS_ISO_9796) + if(req.algo_name() == "ISO_9796_DS2") + { + if(req.arg_count_between(1, 3)) + { + if(auto h = HashFunction::create(req.arg(0))) + { + const size_t salt_size = req.arg_as_integer(2, h->output_length()); + const bool implicit = req.arg(1, "exp") == "imp"; + return new ISO_9796_DS2(h.release(), implicit, salt_size); + } + } + } + //ISO-9796-2 DS 3 is deterministic and DS2 without a salt + if(req.algo_name() == "ISO_9796_DS3") + { + if(req.arg_count_between(1, 2)) + { + if(auto h = HashFunction::create(req.arg(0))) + { + const bool implicit = req.arg(1, "exp") == "imp"; + return new ISO_9796_DS3(h.release(), implicit); + } + } + } +#endif + +#if defined(BOTAN_HAS_EMSA_X931) + if(req.algo_name() == "EMSA_X931" || + req.algo_name() == "EMSA2" || + req.algo_name() == "X9.31") + { + if(req.arg_count() == 1) + { + if(auto hash = HashFunction::create(req.arg(0))) + { + return new EMSA_X931(hash.release()); + } + } + } +#endif + +#if defined(BOTAN_HAS_EMSA_RAW) + if(req.algo_name() == "Raw") + { + if(req.arg_count() == 0) + { + return new EMSA_Raw; + } + else + { + auto hash = HashFunction::create(req.arg(0)); + if(hash) + return new EMSA_Raw(hash->output_length()); + } + } +#endif + + throw Algorithm_Not_Found(algo_spec); + } + +std::string hash_for_emsa(const std::string& algo_spec) + { + SCAN_Name emsa_name(algo_spec); + + if(emsa_name.arg_count() > 0) + { + const std::string pos_hash = emsa_name.arg(0); + return pos_hash; + } + + return "SHA-512"; // safe default if nothing we understand + } + +} + + |