From afb097eda83bbc5d69d7fa9aa5ed18b1869af4ba Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Mon, 3 May 2021 14:28:02 +0200
Subject: [PATCH] params: remove dependency on crypto (#22788)
* params: remove dependency on crypto
Package params should not depend on package crypto because building
crypto requires cgo.
Since build/ci.go needs package params to get the go-ethereum version
number, C code must be compiled in order to run the build tool, which is
annoying for certain cross-compilation setups.
* params: add SectionHead
---
params/config.go | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/params/config.go b/params/config.go
index f4e2f5ea6..eb80bb2e2 100644
--- a/params/config.go
+++ b/params/config.go
@@ -22,7 +22,7 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/crypto"
+ "golang.org/x/crypto/sha3"
)
// Genesis hashes to enforce below configs on.
@@ -278,12 +278,18 @@ func (c *TrustedCheckpoint) HashEqual(hash common.Hash) bool {
// Hash returns the hash of checkpoint's four key fields(index, sectionHead, chtRoot and bloomTrieRoot).
func (c *TrustedCheckpoint) Hash() common.Hash {
- buf := make([]byte, 8+3*common.HashLength)
- binary.BigEndian.PutUint64(buf, c.SectionIndex)
- copy(buf[8:], c.SectionHead.Bytes())
- copy(buf[8+common.HashLength:], c.CHTRoot.Bytes())
- copy(buf[8+2*common.HashLength:], c.BloomRoot.Bytes())
- return crypto.Keccak256Hash(buf)
+ var sectionIndex [8]byte
+ binary.BigEndian.PutUint64(sectionIndex[:], c.SectionIndex)
+
+ w := sha3.NewLegacyKeccak256()
+ w.Write(sectionIndex[:])
+ w.Write(c.SectionHead[:])
+ w.Write(c.CHTRoot[:])
+ w.Write(c.BloomRoot[:])
+
+ var h common.Hash
+ w.Sum(h[:0])
+ return h
}
// Empty returns an indicator whether the checkpoint is regarded as empty.
--
GitLab