pub unsafe extern "C" fn pkcs_1_oaep_decode(
msg: *const c_uchar,
msglen: c_ulong,
lparam: *const c_uchar,
lparamlen: c_ulong,
modulus_bitlen: c_ulong,
hash_idx: c_int,
out: *mut c_uchar,
outlen: *mut c_ulong,
res: *mut c_int,
) -> c_int