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