diff options
Diffstat (limited to 'lib/crypto/c_src/cipher.c')
-rw-r--r-- | lib/crypto/c_src/cipher.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/lib/crypto/c_src/cipher.c b/lib/crypto/c_src/cipher.c new file mode 100644 index 0000000000..6580cb183f --- /dev/null +++ b/lib/crypto/c_src/cipher.c @@ -0,0 +1,117 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2010-2018. All Rights Reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * %CopyrightEnd% + */ + +#include "cipher.h" + +#ifdef OPENSSL_NO_DES +#define COND_NO_DES_PTR(Ptr) (NULL) +#else +#define COND_NO_DES_PTR(Ptr) (Ptr) +#endif + +static struct cipher_type_t cipher_types[] = +{ + {{"rc2_cbc"}, +#ifndef OPENSSL_NO_RC2 + {&EVP_rc2_cbc} +#else + {NULL} +#endif + }, + {{"des_cbc"}, {COND_NO_DES_PTR(&EVP_des_cbc)}}, + {{"des_cfb"}, {COND_NO_DES_PTR(&EVP_des_cfb8)}}, + {{"des_ecb"}, {COND_NO_DES_PTR(&EVP_des_ecb)}}, + {{"des_ede3_cbc"}, {COND_NO_DES_PTR(&EVP_des_ede3_cbc)}}, + {{"des_ede3_cbf"}, /* Misspelled, retained */ +#ifdef HAVE_DES_ede3_cfb_encrypt + {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)} +#else + {NULL} +#endif + }, + {{"des_ede3_cfb"}, +#ifdef HAVE_DES_ede3_cfb_encrypt + {COND_NO_DES_PTR(&EVP_des_ede3_cfb8)} +#else + {NULL} +#endif + }, + {{"blowfish_cbc"}, {&EVP_bf_cbc}}, + {{"blowfish_cfb64"}, {&EVP_bf_cfb64}}, + {{"blowfish_ofb64"}, {&EVP_bf_ofb}}, + {{"blowfish_ecb"}, {&EVP_bf_ecb}}, + {{"aes_cbc"}, {&EVP_aes_128_cbc}, 16}, + {{"aes_cbc"}, {&EVP_aes_192_cbc}, 24}, + {{"aes_cbc"}, {&EVP_aes_256_cbc}, 32}, + {{"aes_cbc128"}, {&EVP_aes_128_cbc}}, + {{"aes_cbc256"}, {&EVP_aes_256_cbc}}, + {{"aes_cfb8"}, {&EVP_aes_128_cfb8}}, + {{"aes_cfb128"}, {&EVP_aes_128_cfb128}}, + {{"aes_ecb"}, {&EVP_aes_128_ecb}, 16}, + {{"aes_ecb"}, {&EVP_aes_192_ecb}, 24}, + {{"aes_ecb"}, {&EVP_aes_256_ecb}, 32}, + {{NULL}} +}; + +#ifdef HAVE_EVP_AES_CTR +ErlNifResourceType* evp_cipher_ctx_rtype; + +static void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) { + EVP_CIPHER_CTX_free(ctx->ctx); +} +#endif + +int init_cipher_ctx(ErlNifEnv *env) { +#ifdef HAVE_EVP_AES_CTR + evp_cipher_ctx_rtype = enif_open_resource_type(env, NULL, "EVP_CIPHER_CTX", + (ErlNifResourceDtor*) evp_cipher_ctx_dtor, + ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER, + NULL); + if (evp_cipher_ctx_rtype == NULL) { + PRINTF_ERR0("CRYPTO: Could not open resource type 'EVP_CIPHER_CTX'"); + return 0; + } +#endif + + return 1; +} + +void init_cipher_types(ErlNifEnv* env) +{ + struct cipher_type_t* p = cipher_types; + + for (p = cipher_types; p->type.str; p++) { + p->type.atom = enif_make_atom(env, p->type.str); + if (p->cipher.funcp) + p->cipher.p = p->cipher.funcp(); + } + p->type.atom = atom_false; /* end marker */ +} + +struct cipher_type_t* get_cipher_type(ERL_NIF_TERM type, size_t key_len) +{ + struct cipher_type_t* p = NULL; + for (p = cipher_types; p->type.atom != atom_false; p++) { + if (type == p->type.atom && (!p->key_len || key_len == p->key_len)) { + return p; + } + } + return NULL; +} |