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feat: Credential delegation chain with depth-limited transitive trust and revocation propagation (#68) #74

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Merged
michaelvic123 merged 2 commits into from
Jul 30, 2026
Merged

feat: Credential delegation chain with depth-limited transitive trust and revocation propagation (#68) #74

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cf2a71d
feat: Credential delegation chain with depth-limited transitive trust…
jotel-dev Jul 29, 2026
a5c2f61
Merge branch 'main' into issue-68-credential-delegation-chain
michaelvic123 Jul 30, 2026
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62 changes: 47 additions & 15 deletions contracts/stellar-id/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -573,15 +573,30 @@ impl StellarIdContract {
.persistent()
.set(&DataKey::Identity(subject.clone()), &identity);

let mut issuer_rec: Issuer = env
if let Some(mut issuer_rec) = env
.storage()
.persistent()
.get(&DataKey::Issuer(issuer.clone()))
.expect("Issuer not found");
issuer_rec.credential_count += 1;
env.storage()
.persistent()
.set(&DataKey::Issuer(issuer.clone()), &issuer_rec);
.get::<DataKey, Issuer>(&DataKey::Issuer(issuer.clone()))
{
issuer_rec.credential_count += 1;
env.storage()
.persistent()
.set(&DataKey::Issuer(issuer.clone()), &issuer_rec);
} else {
let chain = Self::resolve_delegation_chain(env.clone(), issuer.clone());
if let Some(root_addr) = chain.get(chain.len() - 1) {
if let Some(mut root_rec) = env
.storage()
.persistent()
.get::<DataKey, Issuer>(&DataKey::Issuer(root_addr.clone()))
{
root_rec.credential_count += 1;
env.storage()
.persistent()
.set(&DataKey::Issuer(root_addr), &root_rec);
}
}
}

env.events().publish(
(Symbol::new(&env, "credential_issued"),),
Expand Down Expand Up @@ -694,15 +709,30 @@ impl StellarIdContract {
.instance()
.set(&DataKey::CredentialCount, &count);

let mut issuer_rec: Issuer = env
if let Some(mut issuer_rec) = env
.storage()
.persistent()
.get(&DataKey::Issuer(issuer.clone()))
.expect("Issuer not found");
issuer_rec.credential_count += subjects.len() as u64;
env.storage()
.persistent()
.set(&DataKey::Issuer(issuer.clone()), &issuer_rec);
.get::<DataKey, Issuer>(&DataKey::Issuer(issuer.clone()))
{
issuer_rec.credential_count += subjects.len() as u64;
env.storage()
.persistent()
.set(&DataKey::Issuer(issuer.clone()), &issuer_rec);
} else {
let chain = Self::resolve_delegation_chain(env.clone(), issuer.clone());
if let Some(root_addr) = chain.get(chain.len() - 1) {
if let Some(mut root_rec) = env
.storage()
.persistent()
.get::<DataKey, Issuer>(&DataKey::Issuer(root_addr.clone()))
{
root_rec.credential_count += subjects.len() as u64;
env.storage()
.persistent()
.set(&DataKey::Issuer(root_addr), &root_rec);
}
}
}

env.events().publish(
(Symbol::new(&env, "credentials_batch_issued"),),
Expand Down Expand Up @@ -1466,7 +1496,9 @@ impl StellarIdContract {
assert!(record.active, "Issuer is not active");
record.trust_level
} else {
panic!("Not a registered issuer");
let delegated_trust = Self::compute_delegated_trust(env.clone(), issuer.clone());
assert!(delegated_trust > 0, "Not a registered issuer or active delegate");
delegated_trust
}
}

Expand Down
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