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authorSverker Eriksson <[email protected]>2013-06-12 15:59:17 +0200
committerSverker Eriksson <[email protected]>2013-06-12 16:23:43 +0200
commitec59a1357bbbaf8698b9073a190215b703ccc538 (patch)
treec4e8c6080f2da81e83812235209170a50146962c /lib/crypto/c_src
parent80e417da3b48af2140652baf169db27e2feefd98 (diff)
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crypto: Refactor remove resource for EC_KEY
The resource was not needed as it was never kept between external crypto calls.
Diffstat (limited to 'lib/crypto/c_src')
-rw-r--r--lib/crypto/c_src/crypto.c175
1 files changed, 67 insertions, 108 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index 8ed7ac900b..3b60cab043 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -242,8 +242,6 @@ static ERL_NIF_TERM bf_cbc_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
static ERL_NIF_TERM bf_ecb_crypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM blowfish_ofb64_encrypt(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM ec_key_to_term_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
-static ERL_NIF_TERM term_to_ec_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM ecdsa_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
static ERL_NIF_TERM ecdsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
@@ -372,12 +370,10 @@ static ErlNifFunc nif_funcs[] = {
{"bf_ecb_crypt", 3, bf_ecb_crypt},
{"blowfish_ofb64_encrypt", 3, blowfish_ofb64_encrypt},
- {"ec_key_to_term_nif", 1, ec_key_to_term_nif},
- {"term_to_ec_key_nif", 3, term_to_ec_key_nif},
{"ec_key_generate", 1, ec_key_generate},
- {"ecdsa_sign_nif", 3, ecdsa_sign_nif},
- {"ecdsa_verify_nif", 4, ecdsa_verify_nif},
- {"ecdh_compute_key_nif", 2, ecdh_compute_key_nif}
+ {"ecdsa_sign_nif", 4, ecdsa_sign_nif},
+ {"ecdsa_verify_nif", 5, ecdsa_verify_nif},
+ {"ecdh_compute_key_nif", 3, ecdh_compute_key_nif}
};
#if defined(HAVE_EC)
@@ -472,9 +468,6 @@ static struct nid_map ec_curves[] = {
#define EC_CURVES_CNT (sizeof(ec_curves)/sizeof(struct nid_map))
-struct nif_ec_key {
- EC_KEY *key;
-};
#endif /* HAVE_EC */
ERL_NIF_INIT(crypto,nif_funcs,load,NULL,upgrade,unload)
@@ -535,9 +528,6 @@ static ERL_NIF_TERM atom_characteristic_two_field;
static ERL_NIF_TERM atom_tpbasis;
static ERL_NIF_TERM atom_ppbasis;
static ERL_NIF_TERM atom_onbasis;
-
-static ErlNifResourceType* res_type_ec_key;
-static void ec_key_dtor(ErlNifEnv* env, void* obj);
#endif
/*
@@ -589,13 +579,6 @@ static int init(ErlNifEnv* env, ERL_NIF_TERM load_info)
return 0;
}
-#if defined(HAVE_EC)
- res_type_ec_key = enif_open_resource_type(env,NULL,"crypto.EC_KEY",
- ec_key_dtor,
- ERL_NIF_RT_CREATE|ERL_NIF_RT_TAKEOVER,
- NULL);
-#endif
-
if (library_refc > 0) {
/* Repeated loading of this library (module upgrade).
* Atoms and callbacks are already set, we are done.
@@ -3120,36 +3103,7 @@ static ERL_NIF_TERM point2term(ErlNifEnv* env,
return enif_make_binary(env, &bin);
}
-#endif
-
-static ERL_NIF_TERM ec_key_to_term_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{
-#if defined(HAVE_EC)
- struct nif_ec_key *obj;
- const EC_GROUP *group;
- const EC_POINT *public_key;
- const BIGNUM *priv_key = NULL;
- ERL_NIF_TERM pub_key = atom_undefined;
-
- if (!enif_get_resource(env, argv[0], res_type_ec_key, (void **)&obj))
- return enif_make_badarg(env);
-
- group = EC_KEY_get0_group(obj->key);
- public_key = EC_KEY_get0_public_key(obj->key);
- priv_key = EC_KEY_get0_private_key(obj->key);
-
- if (group) {
- if (public_key)
- pub_key = point2term(env, group, public_key, EC_KEY_get_conv_form(obj->key));
- }
-
- return enif_make_tuple2(env, pub_key, bn2term(env, priv_key));
-#else
- return atom_notsup;
-#endif
-}
-#if defined(HAVE_EC)
static int term2point(ErlNifEnv* env, ERL_NIF_TERM term,
EC_GROUP *group, EC_POINT **pptr)
{
@@ -3177,24 +3131,22 @@ static int term2point(ErlNifEnv* env, ERL_NIF_TERM term,
return ret;
}
-#endif
-static ERL_NIF_TERM term_to_ec_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+static int get_ec_key(ErlNifEnv* env,
+ ERL_NIF_TERM curve, ERL_NIF_TERM priv, ERL_NIF_TERM pub,
+ EC_KEY** res)
{
-#if defined(HAVE_EC)
- ERL_NIF_TERM ret;
EC_KEY *key = NULL;
BIGNUM *priv_key = NULL;
EC_POINT *pub_key = NULL;
- struct nif_ec_key *obj;
EC_GROUP *group = NULL;
- if (!(argv[1] == atom_undefined || get_bn_from_bin(env, argv[1], &priv_key))
- || !(argv[2] == atom_undefined || enif_is_binary(env, argv[2]))) {
+ if (!(priv == atom_undefined || get_bn_from_bin(env, priv, &priv_key))
+ || !(pub == atom_undefined || enif_is_binary(env, pub))) {
goto out_err;
}
- key = ec_key_new(env, argv[0]);
+ key = ec_key_new(env, curve);
if (!key) {
goto out_err;
@@ -3203,12 +3155,12 @@ static ERL_NIF_TERM term_to_ec_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_T
if (!group)
group = EC_GROUP_dup(EC_KEY_get0_group(key));
- if (term2point(env, argv[2], group, &pub_key)) {
+ if (term2point(env, pub, group, &pub_key)) {
if (!EC_KEY_set_public_key(key, pub_key)) {
goto out_err;
}
}
- if (argv[1] != atom_undefined
+ if (priv != atom_undefined
&& !BN_is_zero(priv_key)) {
if (!EC_KEY_set_private_key(key, priv_key))
goto out_err;
@@ -3227,19 +3179,11 @@ static ERL_NIF_TERM term_to_ec_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_T
}
}
- obj = enif_alloc_resource(res_type_ec_key, sizeof(struct nif_ec_key));
- if (!obj)
- goto out_err;
-
- obj->key = key;
- ret = enif_make_resource(env, obj);
- enif_release_resource(obj);
-
goto out;
out_err:
if (key) EC_KEY_free(key);
- ret = enif_make_badarg(env);
+ key = NULL;
out:
/* some OpenSSL structures are mem-dup'ed into the key,
@@ -3247,11 +3191,12 @@ out:
if (priv_key) BN_clear_free(priv_key);
if (pub_key) EC_POINT_free(pub_key);
if (group) EC_GROUP_free(group);
- return ret;
-#else
- return atom_notsup;
-#endif
+ if (!key)
+ return 0;
+ *res = key;
+ return 1;
}
+#endif /* HAVE_EC */
static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
@@ -3259,14 +3204,21 @@ static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM
EC_KEY *key = ec_key_new(env, argv[0]);
if (key && EC_KEY_generate_key(key)) {
- ERL_NIF_TERM term;
- struct nif_ec_key *obj = enif_alloc_resource(res_type_ec_key, sizeof(struct nif_ec_key));
- if (!obj)
- return atom_error;
- obj->key = key;
- term = enif_make_resource(env, obj);
- enif_release_resource(obj);
- return term;
+ const EC_GROUP *group;
+ const EC_POINT *public_key;
+ ERL_NIF_TERM priv_key;
+ ERL_NIF_TERM pub_key = atom_undefined;
+
+ group = EC_KEY_get0_group(key);
+ public_key = EC_KEY_get0_public_key(key);
+
+ if (group && public_key) {
+ pub_key = point2term(env, group, public_key,
+ EC_KEY_get_conv_form(key));
+ }
+ priv_key = bn2term(env, EC_KEY_get0_private_key(key));
+ EC_KEY_free(key);
+ return enif_make_tuple2(env, pub_key, priv_key);
}
else
return enif_make_badarg(env);
@@ -3275,21 +3227,13 @@ static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM
#endif
}
-#if defined(HAVE_EC)
-static void ec_key_dtor(ErlNifEnv* env, void* obj)
-{
- struct nif_ec_key *key = (struct nif_ec_key*) obj;
- EC_KEY_free(key->key);
-}
-#endif
-
static ERL_NIF_TERM ecdsa_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Data|{digest,Digest}, Key) */
+{/* (Type, Data|{digest,Digest}, Curve, Key) */
#if defined(HAVE_EC)
ErlNifBinary data_bin, ret_bin;
unsigned char hmacbuf[SHA_DIGEST_LENGTH];
unsigned int dsa_s_len;
- struct nif_ec_key *obj;
+ EC_KEY* key = NULL;
int i;
const ERL_NIF_TERM* tpl_terms;
int tpl_arity;
@@ -3304,30 +3248,32 @@ static ERL_NIF_TERM ecdsa_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM
return atom_notsup;
}
- if (!enif_get_resource(env, argv[2], res_type_ec_key, (void **)&obj))
- return enif_make_badarg(env);
+ if (!get_ec_key(env, argv[2], argv[3], atom_undefined, &key))
+ goto badarg;
if (enif_get_tuple(env, argv[1], &tpl_arity, &tpl_terms)) {
if (tpl_arity != 2 || tpl_terms[0] != atom_digest
|| !enif_inspect_binary(env, tpl_terms[1], &data_bin)
|| data_bin.size != digp->len) {
- return enif_make_badarg(env);
+ goto badarg;
}
digest = data_bin.data;
}
else {
if (!enif_inspect_binary(env,argv[1],&data_bin)) {
- return enif_make_badarg(env);
+ goto badarg;
}
digest = hmacbuf;
digp->funcp(data_bin.data, data_bin.size, digest);
}
- enif_alloc_binary(ECDSA_size(obj->key), &ret_bin);
+ enif_alloc_binary(ECDSA_size(key), &ret_bin);
i = ECDSA_sign(digp->NID_type, digest, digp->len,
- ret_bin.data, &dsa_s_len, obj->key);
+ ret_bin.data, &dsa_s_len, key);
+
+ EC_KEY_free(key);
if (i) {
if (dsa_s_len != ret_bin.size) {
enif_realloc_binary(&ret_bin, dsa_s_len);
@@ -3338,18 +3284,23 @@ static ERL_NIF_TERM ecdsa_sign_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM
enif_release_binary(&ret_bin);
return atom_error;
}
+
+badarg:
+ if (key)
+ EC_KEY_free(key);
+ return enif_make_badarg(env);
#else
return atom_notsup;
#endif
}
static ERL_NIF_TERM ecdsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
-{/* (Type, Data|{digest,Digest}, Signature, Key) */
+{/* (Type, Data|{digest,Digest}, Signature, Curve, Key) */
#if defined(HAVE_EC)
ErlNifBinary data_bin, sign_bin;
unsigned char hmacbuf[SHA512_LEN];
int i;
- struct nif_ec_key *obj;
+ EC_KEY* key = NULL;
const ERL_NIF_TERM type = argv[0];
const ERL_NIF_TERM* tpl_terms;
int tpl_arity;
@@ -3365,15 +3316,15 @@ static ERL_NIF_TERM ecdsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TER
}
if (!enif_inspect_binary(env, argv[2], &sign_bin)
- || !enif_get_resource(env, argv[3], res_type_ec_key, (void **)&obj))
- return enif_make_badarg(env);
+ || !get_ec_key(env, argv[3], atom_undefined, argv[4], &key))
+ goto badarg;
if (enif_get_tuple(env, argv[1], &tpl_arity, &tpl_terms)) {
if (tpl_arity != 2 || tpl_terms[0] != atom_digest
|| !enif_inspect_binary(env, tpl_terms[1], &data_bin)
|| data_bin.size != digp->len) {
- return enif_make_badarg(env);
+ goto badarg;
}
digest = data_bin.data;
}
@@ -3382,13 +3333,20 @@ static ERL_NIF_TERM ecdsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TER
digp->funcp(data_bin.data, data_bin.size, digest);
}
else {
- return enif_make_badarg(env);
+ goto badarg;
}
i = ECDSA_verify(digp->NID_type, digest, digp->len,
- sign_bin.data, sign_bin.size, obj->key);
+ sign_bin.data, sign_bin.size, key);
+
+ EC_KEY_free(key);
return (i==1 ? atom_true : atom_false);
+
+badarg:
+ if (key)
+ EC_KEY_free(key);
+ return enif_make_badarg(env);
#else
return atom_notsup;
#endif
@@ -3399,24 +3357,24 @@ static ERL_NIF_TERM ecdsa_verify_nif(ErlNifEnv* env, int argc, const ERL_NIF_TER
(_OthersPublicKey, _MyEC_Point)
*/
static ERL_NIF_TERM ecdh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+/* (OtherPublicKey, Curve, My) */
{
#if defined(HAVE_EC)
ERL_NIF_TERM ret;
unsigned char *p;
- struct nif_ec_key *other_key;
+ EC_KEY* key = NULL;
int field_size = 0;
int i;
-
EC_GROUP *group;
const BIGNUM *priv_key;
EC_POINT *my_ecpoint;
EC_KEY *other_ecdh = NULL;
- if (!enif_get_resource(env, argv[1], res_type_ec_key, (void **)&other_key))
+ if (!get_ec_key(env, argv[1], argv[2], atom_undefined, &key))
return enif_make_badarg(env);
- group = EC_GROUP_dup(EC_KEY_get0_group(other_key->key));
- priv_key = EC_KEY_get0_private_key(other_key->key);
+ group = EC_GROUP_dup(EC_KEY_get0_group(key));
+ priv_key = EC_KEY_get0_private_key(key);
if (!term2point(env, argv[0], group, &my_ecpoint)) {
goto out_err;
@@ -3440,6 +3398,7 @@ out:
if (group) EC_GROUP_free(group);
if (my_ecpoint) EC_POINT_free(my_ecpoint);
if (other_ecdh) EC_KEY_free(other_ecdh);
+ if (key) EC_KEY_free(key);
return ret;