diff options
Diffstat (limited to 'lib/crypto')
| -rw-r--r-- | lib/crypto/c_src/rc4.c | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/lib/crypto/c_src/rc4.c b/lib/crypto/c_src/rc4.c index d5b32d88bd..63f8000839 100644 --- a/lib/crypto/c_src/rc4.c +++ b/lib/crypto/c_src/rc4.c @@ -57,20 +57,34 @@ ERL_NIF_TERM rc4_encrypt_with_state(ErlNifEnv* env, int argc, const ERL_NIF_TERM ErlNifBinary state, data; RC4_KEY* rc4_key; ERL_NIF_TERM new_state, new_data; + unsigned char *outp; CHECK_NO_FIPS_MODE(); - if (!enif_inspect_iolist_as_binary(env,argv[0], &state) - || state.size != sizeof(RC4_KEY) - || !enif_inspect_iolist_as_binary(env,argv[1], &data)) { - return enif_make_badarg(env); - } - rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &new_state); + if (argc != 2) + goto bad_arg; + if (!enif_inspect_iolist_as_binary(env, argv[0], &state)) + goto bad_arg; + if (state.size != sizeof(RC4_KEY)) + goto bad_arg; + if (!enif_inspect_iolist_as_binary(env, argv[1], &data)) + goto bad_arg; + + if ((rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &new_state)) == NULL) + goto err; + if ((outp = enif_make_new_binary(env, data.size, &new_data)) == NULL) + goto err; + memcpy(rc4_key, state.data, sizeof(RC4_KEY)); - RC4(rc4_key, data.size, data.data, - enif_make_new_binary(env, data.size, &new_data)); - CONSUME_REDS(env,data); - return enif_make_tuple2(env,new_state,new_data); + RC4(rc4_key, data.size, data.data, outp); + + CONSUME_REDS(env, data); + return enif_make_tuple2(env, new_state, new_data); + + bad_arg: + err: + return enif_make_badarg(env); + #else return enif_raise_exception(env, atom_notsup); #endif |