arnaucube/babyjubjub-ark
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Poseidon load static ref avoiding load each time

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Benchmarks (On a Intel(R) Core(TM) i7-8705G CPU @ 3.10GHz, with 32 GB of RAM):
- Old:
```
sign                    time:   [953.50 us 953.73 us 953.98 us]
verify                  time:   [832.24 us 832.38 us 832.52 us]
```

- New:
```
sign                    time:   [559.84 us 568.41 us 576.26 us]
verify                  time:   [376.59 us 376.68 us 376.78 us]
```
This commit is contained in:
arnaucube
2020-09-07 23:09:08 +02:00
parent 693c7be161
commit d893ecc5f6
2 changed files with 2 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
Cargo.toml
View File

@@ -20,7 +20,7 @@ generic-array = "0.13.2"
tiny-keccak = "1.5" tiny-keccak = "1.5"
rustc-hex = "1.0.0" rustc-hex = "1.0.0"
mimc-rs = "0.0.2" mimc-rs = "0.0.2"
poseidon-rs = "0.0.3" poseidon-rs = "0.0.4"
arrayref = "0.3.5" arrayref = "0.3.5"
lazy_static = "1.4.0" lazy_static = "1.4.0"

5
src/lib.rs
View File

@@ -73,6 +73,7 @@ lazy_static! {
) )
.unwrap() .unwrap()
>> 3; >> 3;
static ref poseidon: poseidon_rs::Poseidon = Poseidon::new();
} }
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
@@ -306,7 +307,6 @@ impl PrivateKey {
let a = &self.public()?; let a = &self.public()?;
let hm_input = vec![r8.x.clone(), r8.y.clone(), a.x.clone(), a.y.clone(), msgFr]; let hm_input = vec![r8.x.clone(), r8.y.clone(), a.x.clone(), a.y.clone(), msgFr];
let poseidon = Poseidon::new();
let hm = poseidon.hash(hm_input)?; let hm = poseidon.hash(hm_input)?;
let mut s = &self.key << 3; let mut s = &self.key << 3;
@@ -345,7 +345,6 @@ pub fn schnorr_hash(pk: &Point, msg: BigInt, c: &Point) -> Result<BigInt, String
} }
let msgFr: Fr = Fr::from_str(&msg.to_string()).unwrap(); let msgFr: Fr = Fr::from_str(&msg.to_string()).unwrap();
let hm_input = vec![pk.x.clone(), pk.y.clone(), c.x.clone(), c.y.clone(), msgFr]; let hm_input = vec![pk.x.clone(), pk.y.clone(), c.x.clone(), c.y.clone(), msgFr];
let poseidon = Poseidon::new();
let h = poseidon.hash(hm_input)?; let h = poseidon.hash(hm_input)?;
println!("h {:?}", h.to_string()); println!("h {:?}", h.to_string());
let hB = BigInt::parse_bytes(to_hex(&h).as_bytes(), 16).unwrap(); let hB = BigInt::parse_bytes(to_hex(&h).as_bytes(), 16).unwrap();
@@ -387,7 +386,6 @@ pub fn verify(pk: Point, sig: Signature, msg: BigInt) -> bool {
if msg > Q.clone() { if msg > Q.clone() {
return false; return false;
} }
let (_, msg_bytes) = msg.to_bytes_be();
let msgFr: Fr = Fr::from_str(&msg.to_string()).unwrap(); let msgFr: Fr = Fr::from_str(&msg.to_string()).unwrap();
let hm_input = vec![ let hm_input = vec![
sig.r_b8.x.clone(), sig.r_b8.x.clone(),
@@ -396,7 +394,6 @@ pub fn verify(pk: Point, sig: Signature, msg: BigInt) -> bool {
pk.y.clone(), pk.y.clone(),
msgFr, msgFr,
]; ];
let poseidon = Poseidon::new();
let hm = match poseidon.hash(hm_input) { let hm = match poseidon.hash(hm_input) {
Result::Err(_) => return false, Result::Err(_) => return false,
Result::Ok(hm) => hm, Result::Ok(hm) => hm,