From 940a333f1c1089efe0a77c4a05644ddc0d94e955 Mon Sep 17 00:00:00 2001
From: MariusVanDerWijden <m.vanderwijden@live.de>
Date: Mon, 16 Mar 2026 13:59:08 +0100
Subject: [PATCH] crypto/keccak: push missing file

---
 crypto/keccak/keccak_state.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 crypto/keccak/keccak_state.go

diff --git a/crypto/keccak/keccak_state.go b/crypto/keccak/keccak_state.go
new file mode 100644
index 0000000000..c83709cec7
--- /dev/null
+++ b/crypto/keccak/keccak_state.go
@@ -0,0 +1,12 @@
+package keccak
+
+// KeccakState wraps sha3.state. In addition to the usual hash methods, it also supports
+// Read to get a variable amount of data from the hash state. Read is faster than Sum
+// because it doesn't copy the internal state, but also modifies the internal state.
+type KeccakState struct {
+	state
+}
+
+func NewLegacyKeccak256State() *KeccakState {
+	return &KeccakState{state{rate: rateK512, outputLen: 32, dsbyte: dsbyteKeccak}}
+}