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authorAndreas Schultz <[email protected]>2014-11-16 18:45:53 +0100
committerAndreas Schultz <[email protected]>2014-11-17 10:56:52 +0100
commit08753545c4b08b191234f60efe65f78ed113f0d2 (patch)
tree2594398f7cca3a3c9110249031e7b8a9b2c545bf /lib/crypto/c_src/crypto.c
parent30e5a5b28f3f4c5ba69d536aec30d1fae4e1f2fb (diff)
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[crypto] enhance generate_key for ECC keys
enhance generate_key to calculate ECC public keys from private keys
Diffstat (limited to 'lib/crypto/c_src/crypto.c')
-rw-r--r--lib/crypto/c_src/crypto.c47
1 files changed, 26 insertions, 21 deletions
diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c
index a42de9adb1..005f4a964b 100644
--- a/lib/crypto/c_src/crypto.c
+++ b/lib/crypto/c_src/crypto.c
@@ -410,7 +410,7 @@ static ErlNifFunc nif_funcs[] = {
{"bf_ecb_crypt", 3, bf_ecb_crypt},
{"blowfish_ofb64_encrypt", 3, blowfish_ofb64_encrypt},
- {"ec_key_generate", 1, ec_key_generate},
+ {"ec_key_generate", 2, ec_key_generate},
{"ecdsa_sign_nif", 4, ecdsa_sign_nif},
{"ecdsa_verify_nif", 5, ecdsa_verify_nif},
{"ecdh_compute_key_nif", 3, ecdh_compute_key_nif},
@@ -3689,32 +3689,37 @@ out:
static ERL_NIF_TERM ec_key_generate(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
#if defined(HAVE_EC)
- EC_KEY *key = ec_key_new(env, argv[0]);
+ EC_KEY *key;
+ const EC_GROUP *group;
+ const EC_POINT *public_key;
+ ERL_NIF_TERM priv_key;
+ ERL_NIF_TERM pub_key = atom_undefined;
CHECK_OSE_CRYPTO();
- if (key && EC_KEY_generate_key(key)) {
- 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 (!get_ec_key(env, argv[0], argv[1], atom_undefined, &key))
+ goto badarg;
- 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);
+ if (argv[1] == atom_undefined) {
+ if (!EC_KEY_generate_key(key))
+ goto badarg;
}
- else {
- if (key)
- EC_KEY_free(key);
- return enif_make_badarg(env);
+
+ 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);
+
+badarg:
+ if (key)
+ EC_KEY_free(key);
+ return enif_make_badarg(env);
#else
return atom_notsup;
#endif