diff options
Diffstat (limited to 'lib/crypto/c_src/cipher.c')
| -rw-r--r-- | lib/crypto/c_src/cipher.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/lib/crypto/c_src/cipher.c b/lib/crypto/c_src/cipher.c index f8e44b228a..c055a62654 100644 --- a/lib/crypto/c_src/cipher.c +++ b/lib/crypto/c_src/cipher.c @@ -67,14 +67,26 @@ static struct cipher_type_t cipher_types[] = {{"aes_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx}, {{"aes_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_128_cfb8"}, {&EVP_aes_128_cfb8}, 16, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_192_cfb8"}, {&EVP_aes_192_cfb8}, 24, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_256_cfb8"}, {&EVP_aes_256_cfb8}, 32, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx}, {{"aes_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx}, {{"aes_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_128_cfb128"}, {&EVP_aes_128_cfb128}, 16, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_192_cfb128"}, {&EVP_aes_192_cfb128}, 24, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_256_cfb128"}, {&EVP_aes_256_cfb128}, 32, NO_FIPS_CIPHER | AES_CFBx}, + {{"aes_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L}, {{"aes_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L}, {{"aes_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L}, + {{"aes_128_ecb"}, {&EVP_aes_128_ecb}, 16, ECB_BUG_0_9_8L}, + {{"aes_192_ecb"}, {&EVP_aes_192_ecb}, 24, ECB_BUG_0_9_8L}, + {{"aes_256_ecb"}, {&EVP_aes_256_ecb}, 32, ECB_BUG_0_9_8L}, + #if defined(HAVE_EVP_AES_CTR) {{"aes_128_ctr"}, {&EVP_aes_128_ctr}, 16, 0}, {{"aes_192_ctr"}, {&EVP_aes_192_ctr}, 24, 0}, @@ -207,6 +219,87 @@ int cmp_cipher_types(const void *keyp, const void *elemp) { } +ERL_NIF_TERM cipher_info_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) +{/* (Type) */ + const struct cipher_type_t *cipherp; + const EVP_CIPHER *cipher; + ERL_NIF_TERM ret, ret_mode; + unsigned type; + unsigned long mode; + + if ((cipherp = get_cipher_type_no_key(argv[0])) == NULL) + return enif_make_badarg(env); + + if (FORBIDDEN_IN_FIPS(cipherp)) + return enif_raise_exception(env, atom_notsup); + if ((cipher = cipherp->cipher.p) == NULL) + return enif_raise_exception(env, atom_notsup); + + ret = enif_make_new_map(env); + + type = EVP_CIPHER_type(cipher); + enif_make_map_put(env, ret, atom_type, + type == NID_undef ? atom_undefined : enif_make_int(env, type), + &ret); + + enif_make_map_put(env, ret, atom_key_length, + enif_make_int(env, EVP_CIPHER_key_length(cipher)), &ret); + enif_make_map_put(env, ret, atom_iv_length, + enif_make_int(env, EVP_CIPHER_iv_length(cipher)), &ret); + enif_make_map_put(env, ret, atom_block_size, + enif_make_int(env, EVP_CIPHER_block_size(cipher)), &ret); + + mode = EVP_CIPHER_mode(cipher); + switch (mode) { + case EVP_CIPH_ECB_MODE: + ret_mode = atom_ecb_mode; + break; + + case EVP_CIPH_CBC_MODE: + ret_mode = atom_cbc_mode; + break; + + case EVP_CIPH_CFB_MODE: + ret_mode = atom_cfb_mode; + break; + + case EVP_CIPH_OFB_MODE: + ret_mode = atom_ofb_mode; + break; + + case EVP_CIPH_STREAM_CIPHER: + ret_mode = atom_stream_cipher; + break; + + default: + ret_mode = atom_undefined; + break; + } + + enif_make_map_put(env, ret, atom_mode, ret_mode, &ret); + + return ret; +} + +const struct cipher_type_t* get_cipher_type_no_key(ERL_NIF_TERM type) +{ + struct cipher_type_t key; + + key.type.atom = type; + + return bsearch(&key, cipher_types, num_cipher_types, sizeof(cipher_types[0]), cmp_cipher_types_no_key); +} + +int cmp_cipher_types_no_key(const void *keyp, const void *elemp) { + const struct cipher_type_t *key = keyp; + const struct cipher_type_t *elem = elemp; + + if (key->type.atom < elem->type.atom) return -1; + else if (key->type.atom > elem->type.atom) return 1; + else /* key->type.atom == elem->type.atom */ return 0; +} + + ERL_NIF_TERM cipher_types_as_list(ErlNifEnv* env) { struct cipher_type_t* p; |