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core: verify genesis extradata for clique (#24470)

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* Add extra-data checks for clique genesis

* Update genesis.go

* Update genesis.go

* core: simplify clique genesis check

Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
This commit is contained in:
Guruprasad Kamath 2022-03-30 10:27:25 +02:00 committed by GitHub
parent 9f75994b5e
commit 8cacb42278
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 1 additions and 1 deletions
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2
core/genesis.go
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@ -397,7 +397,7 @@ func (g *Genesis) Commit(db ethdb.Database) (*types.Block, error) {
if err := config.CheckConfigForkOrder(); err != nil {
return nil, err
}
if config.Clique != nil && len(block.Extra()) == 0 {
if config.Clique != nil && len(block.Extra()) < 32+crypto.SignatureLength {
return nil, errors.New("can't start clique chain without signers")
}
if err := g.Alloc.write(db, block.Hash()); err != nil {