Certified addresses (#98)

p2p/host/peerstore/pb/pstore.proto

@@ -14,6 +14,9 @@ message AddrBookRecord {
 	// The multiaddresses. This is a sorted list where element 0 expires the soonest.
 	repeated AddrEntry addrs = 2;
 
+	// The most recently received signed PeerRecord.
+	CertifiedRecord certified_record = 3;
+
 	// AddrEntry represents a single multiaddress.
 	message AddrEntry {
 		bytes addr = 1 [(gogoproto.customtype) = "ProtoAddr"];
@@ -24,4 +27,14 @@ message AddrBookRecord {
 		// The original TTL of this address.
 		int64 ttl = 3;
 	}
+
+	// CertifiedRecord contains a serialized signed PeerRecord used to
+	// populate the signedAddrs list.
+	message CertifiedRecord {
+		// The Seq counter from the signed PeerRecord envelope
+		uint64 seq = 1;
+
+		// The serialized bytes of the SignedEnvelope containing the PeerRecord.
+		bytes raw = 2;
+	}
 }

p2p/host/peerstore/peerstore.go

@@ -21,6 +21,7 @@ type peerstore struct {
 
 // NewPeerstore creates a data structure that stores peer data, backed by the
 // supplied implementations of KeyBook, AddrBook and PeerMetadata.
+// Deprecated: use pstoreds.NewPeerstore or peerstoremem.NewPeerstore instead.
 func NewPeerstore(kb pstore.KeyBook, ab pstore.AddrBook, pb pstore.ProtoBook, md pstore.PeerMetadata) pstore.Peerstore {
 	return &peerstore{
 		KeyBook:      kb,