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feat(rln): extend error handling for rln module #358

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a965818
feat(rln): extend error handling in witness calculation with detailed…
vinhtc27 Dec 9, 2025
80e51fe
feat: remove expect() from recoverable error paths across tree, circu…
vinhtc27 Dec 10, 2025
6060ba2
feat: improve error handling in pmtree Hasher trait and keygen functions
vinhtc27 Dec 10, 2025
3a46b8c
feat: enhance error handling across RLN and Merkle tree modules, intr…
vinhtc27 Dec 10, 2025
b1be258
fix(rln-cli): add import path [skip-ci]
vinhtc27 Dec 10, 2025
33c2bf8
chore: update import paths for consistency across modules
vinhtc27 Dec 10, 2025
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15 changes: 8 additions & 7 deletions rln-cli/src/examples/relay.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ use rln::prelude::{
hash_to_field_le, keygen, poseidon_hash, recover_id_secret, Fr, IdSecret, PmtreeConfigBuilder,
RLNProofValues, RLNWitnessInput, RLN,
};
use zerokit_utils::Mode;
use zerokit_utils::pm_tree::Mode;

const MESSAGE_LIMIT: u32 = 1;

Expand Down Expand Up @@ -49,7 +49,7 @@ struct Identity {

impl Identity {
fn new() -> Self {
let (identity_secret, id_commitment) = keygen();
let (identity_secret, id_commitment) = keygen().unwrap();
Identity {
identity_secret,
id_commitment,
Expand Down Expand Up @@ -117,7 +117,8 @@ impl RLNSystem {
let index = self.rln.leaves_set();
let identity = Identity::new();

let rate_commitment = poseidon_hash(&[identity.id_commitment, Fr::from(MESSAGE_LIMIT)]);
let rate_commitment =
poseidon_hash(&[identity.id_commitment, Fr::from(MESSAGE_LIMIT)]).unwrap();
match self.rln.set_next_leaf(rate_commitment) {
Ok(_) => {
println!("Registered User Index: {index}");
Expand Down Expand Up @@ -146,7 +147,7 @@ impl RLNSystem {
};

let (path_elements, identity_path_index) = self.rln.get_merkle_proof(user_index)?;
let x = hash_to_field_le(signal.as_bytes());
let x = hash_to_field_le(signal.as_bytes())?;

let witness = RLNWitnessInput::new(
identity.identity_secret.clone(),
Expand Down Expand Up @@ -230,9 +231,9 @@ fn main() -> Result<()> {
println!("Initializing RLN instance...");
print!("\x1B[2J\x1B[1;1H");
let mut rln_system = RLNSystem::new()?;
let rln_epoch = hash_to_field_le(b"epoch");
let rln_identifier = hash_to_field_le(b"rln-identifier");
let external_nullifier = poseidon_hash(&[rln_epoch, rln_identifier]);
let rln_epoch = hash_to_field_le(b"epoch")?;
let rln_identifier = hash_to_field_le(b"rln-identifier")?;
let external_nullifier = poseidon_hash(&[rln_epoch, rln_identifier]).unwrap();
println!("RLN Relay Example:");
println!("Message Limit: {MESSAGE_LIMIT}");
println!("----------------------------------");
Expand Down
15 changes: 8 additions & 7 deletions rln-cli/src/examples/stateless.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ use rln::prelude::{
hash_to_field_le, keygen, poseidon_hash, recover_id_secret, Fr, IdSecret, PoseidonHash,
RLNProofValues, RLNWitnessInput, DEFAULT_TREE_DEPTH, RLN,
};
use zerokit_utils::{OptimalMerkleTree, ZerokitMerkleProof, ZerokitMerkleTree};
use zerokit_utils::merkle_tree::{OptimalMerkleTree, ZerokitMerkleProof, ZerokitMerkleTree};

const MESSAGE_LIMIT: u32 = 1;

Expand Down Expand Up @@ -48,7 +48,7 @@ struct Identity {

impl Identity {
fn new() -> Self {
let (identity_secret, id_commitment) = keygen();
let (identity_secret, id_commitment) = keygen().unwrap();
Identity {
identity_secret,
id_commitment,
Expand Down Expand Up @@ -101,7 +101,8 @@ impl RLNSystem {
let index = self.tree.leaves_set();
let identity = Identity::new();

let rate_commitment = poseidon_hash(&[identity.id_commitment, Fr::from(MESSAGE_LIMIT)]);
let rate_commitment =
poseidon_hash(&[identity.id_commitment, Fr::from(MESSAGE_LIMIT)]).unwrap();
self.tree.update_next(rate_commitment)?;

println!("Registered User Index: {index}");
Expand All @@ -125,7 +126,7 @@ impl RLNSystem {
};

let merkle_proof = self.tree.proof(user_index)?;
let x = hash_to_field_le(signal.as_bytes());
let x = hash_to_field_le(signal.as_bytes())?;

let witness = RLNWitnessInput::new(
identity.identity_secret.clone(),
Expand Down Expand Up @@ -219,9 +220,9 @@ fn main() -> Result<()> {
println!("Initializing RLN instance...");
print!("\x1B[2J\x1B[1;1H");
let mut rln_system = RLNSystem::new()?;
let rln_epoch = hash_to_field_le(b"epoch");
let rln_identifier = hash_to_field_le(b"rln-identifier");
let external_nullifier = poseidon_hash(&[rln_epoch, rln_identifier]);
let rln_epoch = hash_to_field_le(b"epoch")?;
let rln_identifier = hash_to_field_le(b"rln-identifier")?;
let external_nullifier = poseidon_hash(&[rln_epoch, rln_identifier]).unwrap();
println!("RLN Stateless Relay Example:");
println!("Message Limit: {MESSAGE_LIMIT}");
println!("----------------------------------");
Expand Down
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