frostfs-node/pkg/services/object/internal/key.go

package internal

import (
	"bytes"

	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
)

// VerifyResponseKeyV2 checks if response is signed with expected key. Returns client.ErrWrongPublicKey if not.
func VerifyResponseKeyV2(expectedKey []byte, resp interface {
	GetVerificationHeader() *session.ResponseVerificationHeader
},
) error {
	if !bytes.Equal(resp.GetVerificationHeader().GetBodySignature().GetKey(), expectedKey) {
		return client.ErrWrongPublicKey
	}

	return nil
}