diff options
-rw-r--r-- | lib/crypto/c_src/bn.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/crypto/c_src/bn.c b/lib/crypto/c_src/bn.c index a111269539..75ddd4c2f2 100644 --- a/lib/crypto/c_src/bn.c +++ b/lib/crypto/c_src/bn.c @@ -79,11 +79,17 @@ ERL_NIF_TERM bin_from_bn(ErlNifEnv* env, const BIGNUM *bn) ERL_NIF_TERM term; /* Copy the bignum into an erlang binary. */ - bn_len = BN_num_bytes(bn); - bin_ptr = enif_make_new_binary(env, bn_len, &term); + if ((bn_len = BN_num_bytes(bn)) < 0) + goto err; + if ((bin_ptr = enif_make_new_binary(env, (size_t)bn_len, &term)) == NULL) + goto err; + BN_bn2bin(bn, bin_ptr); return term; + + err: + return enif_make_badarg(env); } ERL_NIF_TERM mod_exp_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) |