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#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;
void evp_cipher_ctx_dtor(ErlNifEnv* env, struct evp_cipher_ctx* ctx) {
EVP_CIPHER_CTX_free(ctx->ctx);
}
#endif
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;
}
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