Adding inner symetric encryption

client/identity.go

@@ -1,9 +1,11 @@
 package client
 
 import (
+	"crypto/rand"
+	"encoding/base64"
 	"encoding/json"
 	"errors"
-	"math/rand"
+	mrand "math/rand"
 	"os"
 	"path/filepath"
 	"strings"
@@ -20,7 +22,7 @@ const maxHiddenCount = 30
 // Package-level random number generator with mutex for thread-safe access
 var (
 	rngMu sync.Mutex
-	rng   = rand.New(rand.NewSource(time.Now().UnixNano()))
+	rng   = mrand.New(mrand.NewSource(time.Now().UnixNano()))
 )
 
 type Identity struct {
@@ -96,6 +98,11 @@ func (id *Identity) InvitePeer(MyName string, ContactName string, MessageServerU
 	}
 	peer.Name = ContactName
 	peer.InvitationId = uuid.New().String() // todo as param to identify then update url
+	symKeyBytes := make([]byte, 32)
+	if _, err = rand.Read(symKeyBytes); err != nil {
+		return nil, err
+	}
+	peer.MySymKey = base64.StdEncoding.EncodeToString(symKeyBytes)
 	/*	if id.MessageServers.Servers == nil {
 			return nil, errors.New("no message servers defined in your identity")
 		}
@@ -161,6 +168,7 @@ func (id *Identity) AnswerInvitation(MyName string, ContactName string, MessageS
 	peer.ContactEncryption = ReceivedContact.EncryptionPublicKey
 	peer.ContactLookupKey = ReceivedContact.LookupPublicKey
 	peer.ContactPublicKey = ReceivedContact.ContactPublicKey
+	peer.MySymKey = ReceivedContact.SymetricKey
 	peer.InvitationId = ReceivedContact.InvitationId
 	peer.InvitationMessage = ReceivedContact.InvitationMessage
 	for srv := range ReceivedContact.PullServers {