diff options
Diffstat (limited to 'src/libstate/get_enc.cpp')
| -rw-r--r-- | src/libstate/get_enc.cpp | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/libstate/get_enc.cpp b/src/libstate/get_enc.cpp new file mode 100644 index 000000000..e42ab784e --- /dev/null +++ b/src/libstate/get_enc.cpp @@ -0,0 +1,240 @@ +/************************************************* +* EMSA/EME/KDF/MGF Retrieval Source File * +* (C) 1999-2007 Jack Lloyd * +*************************************************/ + +#include <botan/lookup.h> +#include <botan/libstate.h> +#include <botan/parsing.h> +#include <botan/util.h> + +#if defined(BOTAN_HAS_MGF1) + #include <botan/mgf1.h> +#endif + +#if defined(BOTAN_HAS_EMSA1) + #include <botan/emsa1.h> +#endif + +#if defined(BOTAN_HAS_EMSA1_BSI) + #include <botan/emsa1_bsi.h> +#endif + +#if defined(BOTAN_HAS_EMSA2) + #include <botan/emsa2.h> +#endif + +#if defined(BOTAN_HAS_EMSA3) + #include <botan/emsa3.h> +#endif + +#if defined(BOTAN_HAS_EMSA4) + #include <botan/emsa4.h> +#endif + +#if defined(BOTAN_HAS_EMSA_RAW) + #include <botan/emsa_raw.h> +#endif + +#if defined(BOTAN_HAS_EME1) + #include <botan/eme1.h> +#endif + +#if defined(BOTAN_HAS_EME_PKCS1v15) + #include <botan/eme_pkcs.h> +#endif + +#if defined(BOTAN_HAS_KDF1) + #include <botan/kdf1.h> +#endif + +#if defined(BOTAN_HAS_KDF2) + #include <botan/kdf2.h> +#endif + +#if defined(BOTAN_HAS_X942_PRF) + #include <botan/prf_x942.h> +#endif + +#if defined(BOTAN_HAS_SSL_V3_PRF) + #include <botan/prf_ssl3.h> +#endif + +#if defined(BOTAN_HAS_TLS_V10_PRF) + #include <botan/prf_tls.h> +#endif + +namespace Botan { + +/************************************************* +* Get an EMSA by name * +*************************************************/ +EMSA* get_emsa(const std::string& algo_spec) + { + std::vector<std::string> name = parse_algorithm_name(algo_spec); + const std::string emsa_name = global_state().deref_alias(name[0]); + +#if defined(BOTAN_HAS_EMSA_RAW) + if(emsa_name == "Raw") + { + if(name.size() == 1) + return new EMSA_Raw; + } +#endif + +#if defined(BOTAN_HAS_EMSA1) + if(emsa_name == "EMSA1") + { + if(name.size() == 2) + return new EMSA1(get_hash(name[1])); + } +#endif + +#if defined(BOTAN_HAS_EMSA1_BSI) + if(emsa_name == "EMSA1_BSI") + { + if(name.size() == 2) + return new EMSA1_BSI(get_hash(name[1])); + } +#endif + +#if defined(BOTAN_HAS_EMSA2) + if(emsa_name == "EMSA2") + { + if(name.size() == 2) + return new EMSA2(get_hash(name[1])); + } +#endif + +#if defined(BOTAN_HAS_EMSA3) + if(emsa_name == "EMSA3") + { + if(name.size() == 2) + return new EMSA3(get_hash(name[1])); + } +#endif + +#if defined(BOTAN_HAS_EMSA4) + if(emsa_name == "EMSA4") + { + // EMSA4 is hardcoded to use MGF1 + if(name.size() >= 3 && name[2] != "MGF1") + throw Algorithm_Not_Found(algo_spec); + + if(name.size() == 2 || name.size() == 3) + return new EMSA4(get_hash(name[1])); + else if(name.size() == 4) + return new EMSA4(get_hash(name[1]), to_u32bit(name[3])); + } +#endif + + throw Algorithm_Not_Found(algo_spec); + } + +/************************************************* +* Get an EME by name * +*************************************************/ +EME* get_eme(const std::string& algo_spec) + { + std::vector<std::string> name = parse_algorithm_name(algo_spec); + const std::string eme_name = global_state().deref_alias(name[0]); + +#if defined(BOTAN_HAS_EME_PKCS1v15) + if(eme_name == "PKCS1v15") + { + if(name.size() == 1) + return new EME_PKCS1v15; + } +#endif + +#if defined(BOTAN_HAS_EME1) + if(eme_name == "EME1") + { + if(name.size() >= 2) + { + if(name.size() >= 3) + { + // EME1 is hardcoded for MGF1 + if(name[2] != "MGF1") + throw Algorithm_Not_Found(algo_spec); + } + + return new EME1(get_hash(name[1])); + } + } +#endif + + throw Algorithm_Not_Found(algo_spec); + } + +/************************************************* +* Get an KDF by name * +*************************************************/ +KDF* get_kdf(const std::string& algo_spec) + { + std::vector<std::string> name = parse_algorithm_name(algo_spec); + const std::string kdf_name = global_state().deref_alias(name[0]); + +#if defined(BOTAN_HAS_KDF1) + if(kdf_name == "KDF1") + { + if(name.size() == 2) + return new KDF1(get_hash(name[1])); + } +#endif + +#if defined(BOTAN_HAS_KDF2) + if(kdf_name == "KDF2") + { + if(name.size() == 2) + return new KDF2(get_hash(name[1])); + } +#endif + +#if defined(BOTAN_HAS_X942_PRF) + if(kdf_name == "X9.42-PRF") + { + if(name.size() == 2) + return new X942_PRF(name[1]); + } +#endif + +#if defined(BOTAN_HAS_TLS_V10_PRF) + if(kdf_name == "TLS-PRF") + { + if(name.size() == 1) + return new TLS_PRF; + } +#endif + +#if defined(BOTAN_HAS_SSL_V3_PRF) + if(kdf_name == "SSL3-PRF") + { + if(name.size() == 1) + return new SSL3_PRF; + } +#endif + + throw Algorithm_Not_Found(algo_spec); + } + +/************************************************* +* Get a MGF by name * +*************************************************/ +MGF* get_mgf(const std::string& algo_spec) + { + std::vector<std::string> name = parse_algorithm_name(algo_spec); + const std::string mgf_name = global_state().deref_alias(name[0]); + +#ifdef BOTAN_HAS_MGF1 + if(mgf_name == "MGF1") + { + if(name.size() == 2) + return new MGF1(get_hash(name[1])); + } +#endif + + throw Algorithm_Not_Found(algo_spec); + } + +} |