From afb097eda83bbc5d69d7fa9aa5ed18b1869af4ba Mon Sep 17 00:00:00 2001 From: Felix Lange 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 f4e2f5ea6718..eb80bb2e27f3 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.