diff options
| -rw-r--r-- | lib/crypto/c_src/rc4.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/lib/crypto/c_src/rc4.c b/lib/crypto/c_src/rc4.c index 483c87b04b..d5b32d88bd 100644 --- a/lib/crypto/c_src/rc4.c +++ b/lib/crypto/c_src/rc4.c @@ -25,15 +25,27 @@ ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) #ifndef OPENSSL_NO_RC4 ErlNifBinary key; ERL_NIF_TERM ret; + RC4_KEY *rc4_key; CHECK_NO_FIPS_MODE(); - if (!enif_inspect_iolist_as_binary(env,argv[0], &key)) { - return enif_make_badarg(env); - } - RC4_set_key((RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &ret), - key.size, key.data); + if (argc != 1) + goto bad_arg; + if (!enif_inspect_iolist_as_binary(env, argv[0], &key)) + goto bad_arg; + if (key.size > INT_MAX) + goto bad_arg; + + if ((rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &ret)) == NULL) + goto err; + + RC4_set_key(rc4_key, (int)key.size, key.data); return ret; + + bad_arg: + err: + return enif_make_badarg(env); + #else return enif_raise_exception(env, atom_notsup); #endif |