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Print seed indicator

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This commit is contained in:
Jeremy Soller 2016-11-01 20:16:44 -06:00
parent e6b11f87ee
commit 75b0844a2a
1 changed files with 9 additions and 2 deletions
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11
schemes/randd/src/main.rs
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@ -49,12 +49,16 @@ impl SchemeMut for RandScheme {
} }
fn main(){ fn main(){
let mut has_rdrand = CpuId::new().get_feature_info().unwrap().has_rdrand(); let has_rdrand = CpuId::new().get_feature_info().unwrap().has_rdrand();
thread::spawn(move || { thread::spawn(move || {
let mut socket = File::create(":rand").expect("rand: failed to create rand scheme"); let mut socket = File::create(":rand").expect("rand: failed to create rand scheme");
let mut rng = ChaChaRng::new_unseeded(); let mut rng = ChaChaRng::new_unseeded();
if has_rdrand { if has_rdrand {
let mut rand: u64; println!("rand: seeding with rdrand");
let rand: u64;
unsafe { unsafe {
asm!("rdrand rax" asm!("rdrand rax"
: "={rax}"(rand) : "={rax}"(rand)
@ -63,7 +67,10 @@ fn main(){
: "intel", "volatile"); : "intel", "volatile");
} }
rng.set_counter(0, rand); rng.set_counter(0, rand);
} else {
println!("rand: unseeded");
} }
let mut scheme = RandScheme{prng: rng}; let mut scheme = RandScheme{prng: rng};
loop { loop {
let mut packet = Packet::default(); let mut packet = Packet::default();