diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/ffi/ffi.h | 36 | ||||
| -rw-r--r-- | src/lib/ffi/ffi_pkey_algs.cpp | 60 |
2 files changed, 96 insertions, 0 deletions
diff --git a/src/lib/ffi/ffi.h b/src/lib/ffi/ffi.h index f59da0545..565d5ce7b 100644 --- a/src/lib/ffi/ffi.h +++ b/src/lib/ffi/ffi.h @@ -693,6 +693,7 @@ BOTAN_DLL int botan_privkey_create_rsa(botan_privkey_t* key, botan_rng_t rng, si BOTAN_DLL int botan_privkey_create_ecdsa(botan_privkey_t* key, botan_rng_t rng, const char* params); BOTAN_DLL int botan_privkey_create_ecdh(botan_privkey_t* key, botan_rng_t rng, const char* params); BOTAN_DLL int botan_privkey_create_mceliece(botan_privkey_t* key, botan_rng_t rng, size_t n, size_t t); +BOTAN_DLL int botan_privkey_create_dh(botan_privkey_t* key, botan_rng_t rng, const char* param); /* * Input currently assumed to be PKCS #8 structure; @@ -832,6 +833,41 @@ BOTAN_DLL int botan_pubkey_dsa_get_g(botan_mp_t d, botan_pubkey_t key); BOTAN_DLL int botan_pubkey_dsa_get_y(botan_mp_t y, botan_pubkey_t key); /* +* Loads Diffie Hellman private key +* +* @param key variable populated with key material +* @param p prime order of a Z_p group +* @param g group generator +* @param x private key +* +* @pre key is NULL on input +* @post function allocates memory and assigns to `key' +* +* @return 0 on success, a negative value on failure +*/ +BOTAN_DLL int botan_privkey_load_dh(botan_privkey_t* key, + botan_mp_t p, + botan_mp_t g, + botan_mp_t x); +/* +* Loads Diffie Hellman public key +* +* @param key variable populated with key material +* @param p prime order of a Z_p group +* @param g group generator +* @param y public key +* +* @pre key is NULL on input +* @post function allocates memory and assigns to `key' +* +* @return 0 on success, a negative value on failure +*/ +BOTAN_DLL int botan_pubkey_load_dh(botan_pubkey_t* key, + botan_mp_t p, + botan_mp_t g, + botan_mp_t y); + +/* * Algorithm specific key operations: ElGamal */ diff --git a/src/lib/ffi/ffi_pkey_algs.cpp b/src/lib/ffi/ffi_pkey_algs.cpp index 844a38846..bde673487 100644 --- a/src/lib/ffi/ffi_pkey_algs.cpp +++ b/src/lib/ffi/ffi_pkey_algs.cpp @@ -60,6 +60,11 @@ #include <botan/mceies.h> #endif +#if defined(BOTAN_HAS_DIFFIE_HELLMAN) + #include <botan/dh.h> +#endif + + namespace { #if defined(BOTAN_HAS_ECC_PUBLIC_KEY_CRYPTO) @@ -496,6 +501,61 @@ int botan_privkey_load_elgamal(botan_privkey_t* key, #endif } +/* Diffie Hellman specific operations */ + +int botan_privkey_create_dh(botan_privkey_t* key_obj, botan_rng_t rng_obj, const char* param_str) + { +#if defined(BOTAN_HAS_DIFFIE_HELLMAN) + return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() { + if(key_obj == nullptr || rng_obj == nullptr || param_str == nullptr || *param_str == 0) + return BOTAN_FFI_ERROR_NULL_POINTER; + + *key_obj = nullptr; + + Botan::RandomNumberGenerator& rng = safe_get(rng_obj); + Botan::DL_Group grp(param_str); + *key_obj = new botan_privkey_struct(new Botan::DH_PrivateKey(rng, grp, 0)); + return BOTAN_FFI_SUCCESS; + }); +#else + BOTAN_UNUSED(key_obj, rng_obj, param_str); + return BOTAN_FFI_ERROR_NOT_IMPLEMENTED; +#endif + } + +int botan_privkey_load_dh(botan_privkey_t* key, + botan_mp_t p, botan_mp_t g, botan_mp_t x) + { +#if defined(BOTAN_HAS_DIFFIE_HELLMAN) + *key = nullptr; + return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() { + Botan::Null_RNG null_rng; + Botan::DL_Group group(safe_get(p), safe_get(g)); + *key = new botan_privkey_struct(new Botan::DH_PrivateKey(null_rng, group, safe_get(x))); + return BOTAN_FFI_SUCCESS; + }); +#else + BOTAN_UNUSED(key, p, g, x); + return BOTAN_FFI_ERROR_NOT_IMPLEMENTED; +#endif + } + +int botan_pubkey_load_dh(botan_pubkey_t* key, + botan_mp_t p, botan_mp_t g, botan_mp_t y) + { +#if defined(BOTAN_HAS_DIFFIE_HELLMAN) + *key = nullptr; + return ffi_guard_thunk(BOTAN_CURRENT_FUNCTION, [=]() { + Botan::DL_Group group(safe_get(p), safe_get(g)); + *key = new botan_pubkey_struct(new Botan::DH_PublicKey(group, safe_get(y))); + return BOTAN_FFI_SUCCESS; + }); +#else + BOTAN_UNUSED(key, p, g, y); + return BOTAN_FFI_ERROR_NOT_IMPLEMENTED; +#endif + } + /* ECDH + x25519 specific operations */ int botan_privkey_create_ecdh(botan_privkey_t* key_obj, botan_rng_t rng_obj, const char* param_str) |