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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
This commit is contained in:
Felix Lange 2021-05-03 14:28:02 +02:00 committed by GitHub
parent ca9c576e62
commit afb097eda8
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1 changed files with 13 additions and 7 deletions
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20
params/config.go
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@ -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.