From d30a918a44fb1198d7025cd5c58349f789b3ce3d Mon Sep 17 00:00:00 2001
From: Franck Royer <franck@status.im>
Date: Thu, 5 May 2022 10:30:25 +1000
Subject: [PATCH] Fix odd case where 0 is encoded as an empty byte array

---
 src/lib/enr/enr.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/lib/enr/enr.ts b/src/lib/enr/enr.ts
index 049ece3f95..bea1e0bf42 100644
--- a/src/lib/enr/enr.ts
+++ b/src/lib/enr/enr.ts
@@ -88,7 +88,9 @@ export class ENR extends Map<ENRKey, ENRValue> {
         dbg("Failed to decode ENR key to UTF-8, skipping it", kvs[i], e);
       }
     }
-    const enr = new ENR(obj, BigInt("0x" + bytesToHex(seq)), signature);
+    // If seq is an empty array, translate as value 0
+    const hexSeq = "0x" + (seq.length ? bytesToHex(seq) : "00");
+    const enr = new ENR(obj, BigInt(hexSeq), signature);
 
     const rlpEncodedBytes = hexToBytes(RLP.encode([seq, ...kvs]));
     if (!enr.verify(rlpEncodedBytes, signature)) {