// IDFromPubKey retrieves a Public Key from the peer given by pk
func IDFromPubKey(pk ic.PubKey) (ID, error) {
b, err := pk.Bytes()
if err != nil {
return nil, err
}
hash := u.Hash(b)
return ID(hash), nil
}
// WithKeyPair returns a Peer object with given keys.
func WithKeyPair(sk ic.PrivKey, pk ic.PubKey) (Peer, error) {
if sk == nil && pk == nil {
return nil, fmt.Errorf("PeerWithKeyPair nil keys")
}
pk2 := sk.GetPublic()
if pk == nil {
pk = pk2
} else if !pk.Equals(pk2) {
return nil, fmt.Errorf("key mismatch. pubkey is not privkey's pubkey")
}
pkid, err := IDFromPubKey(pk)
if err != nil {
return nil, fmt.Errorf("Failed to hash public key: %v", err)
}
return &peer{id: pkid, pubKey: pk, privKey: sk}, nil
}