diff options
Diffstat (limited to 'lib/crypto/c_src/math.c')
| -rw-r--r-- | lib/crypto/c_src/math.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/lib/crypto/c_src/math.c b/lib/crypto/c_src/math.c index 7d7d146ca9..85494bbc93 100644 --- a/lib/crypto/c_src/math.c +++ b/lib/crypto/c_src/math.c @@ -24,20 +24,30 @@ ERL_NIF_TERM do_exor(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) {/* (Data1, Data2) */ ErlNifBinary d1, d2; unsigned char* ret_ptr; - int i; + size_t i; ERL_NIF_TERM ret; - if (!enif_inspect_iolist_as_binary(env,argv[0], &d1) - || !enif_inspect_iolist_as_binary(env,argv[1], &d2) - || d1.size != d2.size) { - return enif_make_badarg(env); - } - ret_ptr = enif_make_new_binary(env, d1.size, &ret); + ASSERT(argc == 2); + + if (!enif_inspect_iolist_as_binary(env, argv[0], &d1)) + goto bad_arg; + if (!enif_inspect_iolist_as_binary(env, argv[1], &d2)) + goto bad_arg; + if (d1.size != d2.size) + goto bad_arg; + + if ((ret_ptr = enif_make_new_binary(env, d1.size, &ret)) == NULL) + goto err; for (i=0; i<d1.size; i++) { ret_ptr[i] = d1.data[i] ^ d2.data[i]; } + CONSUME_REDS(env,d1); return ret; + + bad_arg: + err: + return enif_make_badarg(env); } |