forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-07-23 21:26:42 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Update sync.go

Browse source
This commit is contained in:
sashaodessa 2025-10-16 18:16:57 +02:00 committed by GitHub
parent ff54ca02de
commit e408e6cd8f
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 8 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
p2p/dnsdisc/sync.go
View file

@ -18,7 +18,8 @@ package dnsdisc
import (
"context"
"math/rand"
crand "crypto/rand"
"math/big"
"time"
"github.com/ethereum/go-ethereum/common/mclock"
@ -131,7 +132,12 @@ func (ct *clientTree) syncNextLink(ctx context.Context) error {
}
func (ct *clientTree) syncNextRandomENR(ctx context.Context) (*enode.Node, error) {
index := rand.Intn(len(ct.enrs.missing))
// Use CSPRNG to avoid deterministic selection across processes.
n, err := crand.Int(crand.Reader, big.NewInt(int64(len(ct.enrs.missing))))
if err != nil {
return nil, err
}
index := int(n.Int64())
hash := ct.enrs.missing[index]
e, err := ct.enrs.resolveNext(ctx, hash)
if err != nil {