48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
package record
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"fmt"
|
|
|
|
u "github.com/ipfs/go-ipfs-util"
|
|
mh "github.com/multiformats/go-multihash"
|
|
)
|
|
|
|
// PublicKeyValidator is a Validator that validates public keys.
|
|
type PublicKeyValidator struct{}
|
|
|
|
// Validate conforms to the Validator interface.
|
|
//
|
|
// It verifies that the passed in record value is the PublicKey that matches the
|
|
// passed in key.
|
|
func (pkv PublicKeyValidator) Validate(key string, value []byte) error {
|
|
ns, key, err := SplitKey(key)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if ns != "pk" {
|
|
return errors.New("namespace not 'pk'")
|
|
}
|
|
|
|
keyhash := []byte(key)
|
|
if _, err := mh.Cast(keyhash); err != nil {
|
|
return fmt.Errorf("key did not contain valid multihash: %s", err)
|
|
}
|
|
|
|
pkh := u.Hash(value)
|
|
if !bytes.Equal(keyhash, pkh) {
|
|
return errors.New("public key does not match storage key")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Select conforms to the Validator interface.
|
|
//
|
|
// It always returns 0 as all public keys are equivalently valid.
|
|
func (pkv PublicKeyValidator) Select(k string, vals [][]byte) (int, error) {
|
|
return 0, nil
|
|
}
|
|
|
|
var _ Validator = PublicKeyValidator{}
|