From 4686f8bbc46421e556e4d75f154af04193adbc6c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Isabel=20Sch=C3=B6ps=20Thiel?=
 <155141998+IST-Github@users.noreply.github.com>
Date: Mon, 1 Jan 2024 00:35:46 +0100
Subject: [PATCH] Delete beacon/merkle directory

---
 beacon/merkle/merkle.go | 67 -----------------------------------------
 1 file changed, 67 deletions(-)
 delete mode 100644 beacon/merkle/merkle.go

diff --git a/beacon/merkle/merkle.go b/beacon/merkle/merkle.go
deleted file mode 100644
index 30896f9b01..0000000000
--- a/beacon/merkle/merkle.go
+++ /dev/null
@@ -1,67 +0,0 @@
-// Copyright 2022 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-// Package merkle implements proof verifications in binary merkle trees.
-package merkle
-
-import (
-	"crypto/sha256"
-	"errors"
-	"reflect"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
-)
-
-// Value represents either a 32 byte leaf value or hash node in a binary merkle tree/partial proof.
-type Value [32]byte
-
-// Values represent a series of merkle tree leaves/nodes.
-type Values []Value
-
-var valueT = reflect.TypeOf(Value{})
-
-// UnmarshalJSON parses a merkle value in hex syntax.
-func (m *Value) UnmarshalJSON(input []byte) error {
-	return hexutil.UnmarshalFixedJSON(valueT, input, m[:])
-}
-
-// VerifyProof verifies a Merkle proof branch for a single value in a
-// binary Merkle tree (index is a generalized tree index).
-func VerifyProof(root common.Hash, index uint64, branch Values, value Value) error {
-	hasher := sha256.New()
-	for _, sibling := range branch {
-		hasher.Reset()
-		if index&1 == 0 {
-			hasher.Write(value[:])
-			hasher.Write(sibling[:])
-		} else {
-			hasher.Write(sibling[:])
-			hasher.Write(value[:])
-		}
-		hasher.Sum(value[:0])
-		if index >>= 1; index == 0 {
-			return errors.New("branch has extra items")
-		}
-	}
-	if index != 1 {
-		return errors.New("branch is missing items")
-	}
-	if common.Hash(value) != root {
-		return errors.New("root mismatch")
-	}
-	return nil
-}