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signature.go
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/
signature.go
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package signing
import (
"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/v5/config/params"
ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
)
var ErrNilRegistration = errors.New("nil signed registration")
// VerifyRegistrationSignature verifies the signature of a validator's registration.
func VerifyRegistrationSignature(
sr *ethpb.SignedValidatorRegistrationV1,
) error {
if sr == nil || sr.Message == nil {
return ErrNilRegistration
}
d := params.BeaconConfig().DomainApplicationBuilder
// Per spec, we want the fork version and genesis validator to be nil.
// Which is genesis value and zero by default.
sd, err := ComputeDomain(
d,
nil, /* fork version */
nil /* genesis val root */)
if err != nil {
return err
}
if err := VerifySigningRoot(sr.Message, sr.Message.Pubkey, sr.Signature, sd); err != nil {
return ErrSigFailedToVerify
}
return nil
}