wasm_utils/note/
mixer.rs

1use ark_std::rand::rngs::OsRng;
2use arkworks_setups::common::Leaf;
3
4use crate::{MixerR1CSProverBls381_30, MixerR1CSProverBn254_30};
5use arkworks_setups::{Curve as ArkCurve, MixerProver};
6
7use crate::types::{Curve, OpStatusCode, OperationError};
8
9pub fn generate_secrets(
10	exponentiation: i8,
11	width: usize,
12	curve: Curve,
13	rng: &mut OsRng,
14) -> Result<[Vec<u8>; 2], OperationError> {
15	let sec = match (curve, exponentiation, width) {
16		(Curve::Bls381, 5, 3) => MixerR1CSProverBls381_30::create_random_leaf(ArkCurve::Bls381, rng),
17		(Curve::Bn254, 5, 3) => MixerR1CSProverBn254_30::create_random_leaf(ArkCurve::Bn254, rng),
18		_ => {
19			let message = format!(
20				"No Mixer secrets setup available for curve {}, exponentiation {}, and width {}",
21				curve, exponentiation, width
22			);
23			return Err(OperationError::new_with_message(OpStatusCode::SecretGenFailed, message));
24		}
25	}
26	.map_err(|e| OperationError::new_with_message(OpStatusCode::SecretGenFailed, e.to_string()))?;
27
28	let secrets = [sec.secret_bytes, sec.nullifier_bytes];
29
30	Ok(secrets)
31}
32
33pub fn get_leaf_with_private_raw(
34	curve: Curve,
35	width: usize,
36	exponentiation: i8,
37	raw: &[u8],
38) -> Result<Leaf, OperationError> {
39	if raw.len() < 64 {
40		return Err(OpStatusCode::InvalidNoteSecrets.into());
41	}
42
43	let secrets = raw[..32].to_vec();
44	let nullifer = raw[32..64].to_vec();
45	// (leaf_bytes, nullifier_hash_bytes)
46	let sec = match (curve, exponentiation, width) {
47		(Curve::Bls381, 5, 3) => {
48			MixerR1CSProverBls381_30::create_leaf_with_privates(ArkCurve::Bls381, secrets, nullifer)
49		}
50		(Curve::Bn254, 5, 3) => MixerR1CSProverBn254_30::create_leaf_with_privates(ArkCurve::Bn254, secrets, nullifer),
51		_ => {
52			let message = format!(
53				"No Mixer leaf setup for curve {}, exponentiation {}, and width {}",
54				curve, exponentiation, width
55			);
56			return Err(OperationError::new_with_message(
57				OpStatusCode::FailedToGenerateTheLeaf,
58				message,
59			));
60		}
61	}
62	.map_err(|e| OperationError::new_with_message(OpStatusCode::FailedToGenerateTheLeaf, e.to_string()))?;
63	Ok(sec)
64}
65
66#[cfg(test)]
67mod test {}
wasm_utils/note/mixer.rs

wasm_utils/note/
mixer.rs
