From e17f97a8242c55b6fba66317d3720b9728a12f78 Mon Sep 17 00:00:00 2001
From: MariusVanDerWijden <m.vanderwijden@live.de>
Date: Tue, 3 Jun 2025 22:49:48 +0200
Subject: [PATCH] core/vm: increase cost when exp is > 32bit

---
 core/vm/contracts.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/core/vm/contracts.go b/core/vm/contracts.go
index 73f2b8ffaa..1513665b30 100644
--- a/core/vm/contracts.go
+++ b/core/vm/contracts.go
@@ -418,7 +418,11 @@ func (c *bigModExp) RequiredGas(input []byte) uint64 {
 	adjExpLen := new(big.Int)
 	if expLen.Cmp(big32) > 0 {
 		adjExpLen.Sub(expLen, big32)
-		adjExpLen.Lsh(adjExpLen, 3)
+		if c.eip7883 {
+			adjExpLen.Lsh(adjExpLen, 4)
+		} else {
+			adjExpLen.Lsh(adjExpLen, 3)
+		}
 	}
 	adjExpLen.Add(adjExpLen, big.NewInt(int64(msb)))
 	// Calculate the gas cost of the operation