From 08e26da876040af3240bf59a5b84cef56ba93da4 Mon Sep 17 00:00:00 2001
From: Arseniy Klempner <arseniyk@status.im>
Date: Mon, 15 Dec 2025 16:34:59 -0800
Subject: [PATCH] fix: more descriptive error for epoch and id secret params

---
 packages/rln/src/zerokit.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/rln/src/zerokit.ts b/packages/rln/src/zerokit.ts
index 2e138a5153..1c1f439019 100644
--- a/packages/rln/src/zerokit.ts
+++ b/packages/rln/src/zerokit.ts
@@ -97,8 +97,12 @@ export class Zerokit {
       epoch = epochIntToBytes(dateToEpoch(epoch));
     }
 
-    if (epoch.length !== 32) throw new Error("invalid epoch");
-    if (idSecretHash.length !== 32) throw new Error("invalid id secret hash");
+    if (epoch.length !== 32)
+      throw new Error(`Epoch must be 32 bytes, got ${epoch.length}`);
+    if (idSecretHash.length !== 32)
+      throw new Error(
+        `ID secret hash must be 32 bytes, got ${idSecretHash.length}`
+      );
     if (index < 0) throw new Error("index must be >= 0");
     if (
       rateLimit < RATE_LIMIT_PARAMS.MIN_RATE ||