From 0c58f4a5596d349c63c9633884c6537dea8b1f00 Mon Sep 17 00:00:00 2001
From: Sina Mahmoodi <itz.s1na@gmail.com>
Date: Wed, 28 Feb 2024 15:46:59 +0100
Subject: [PATCH] check commitment conversion

---
 eth/catalyst/simulated_beacon.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/eth/catalyst/simulated_beacon.go b/eth/catalyst/simulated_beacon.go
index 42d596d000..021ce23795 100644
--- a/eth/catalyst/simulated_beacon.go
+++ b/eth/catalyst/simulated_beacon.go
@@ -206,7 +206,11 @@ func (c *SimulatedBeacon) sealBlock(withdrawals []*types.Withdrawal, timestamp u
 		if envelope.BlobsBundle != nil {
 			hasher := sha256.New()
 			for _, commit := range envelope.BlobsBundle.Commitments {
-				c := kzg4844.Commitment(commit[:])
+				var c kzg4844.Commitment
+				if len(commit) != len(c) {
+					return errors.New("invalid commitment length")
+				}
+				copy(c[:], commit)
 				blobHashes = append(blobHashes, kzg4844.CalcBlobHashV1(hasher, &c))
 			}
 		}