The general idea.

Flesh out the remaining comms, validation strategy, etc.

Replication pattern established.

grpc/src/main/proto/leyden.proto

@@ -6,25 +6,31 @@ option java_outer_classname = "LeydenProto";
 option objc_class_prefix = "Ley";
 
 import "google/protobuf/empty.proto";
+import "google/protobuf/any.proto";
 
 import "stereotomy.proto";
 import "stereotomy-services.proto";
 import "crypto.proto";
 
 package leyden;
 
-
 service Binder {
-  rpc bind(Bound) returns(google.protobuf.Empty) {}
-  rpc unbind(Key_) returns(google.protobuf.Empty) {}
-  rpc get(Key_) returns(Bound) {}
+  rpc bind(Binding) returns(google.protobuf.Empty) {}
+  rpc unbind(KeyAndToken) returns(google.protobuf.Empty) {}
+  rpc get(KeyAndToken) returns(Bound) {}
 }
 
 service Reconciliation {
   rpc reconcile (Intervals) returns (Update) {}
   rpc update (Updating) returns (google.protobuf.Empty) {}
 }
 
+message KeyAndToken {
+  int32 ring = 1;
+  bytes key = 2;
+  bytes token = 3;
+}
+
 message Update {
   repeated Bound bindings = 1;
   repeated Interval intervals = 2;
@@ -47,11 +53,13 @@ message Interval {
   crypto.Digeste end = 2;
 }
 
-message Key_ {
-  bytes key = 1;
+message Binding {
+  int32 ring = 1;
+  Bound bound = 2;
+  bytes token = 3;
 }
 
 message Bound {
-  Key_ key = 1;
+  bytes key = 1;
   bytes value = 2;
 }

leyden/pom.xml

@@ -19,6 +19,10 @@
             <groupId>com.h2database</groupId>
             <artifactId>h2-mvstore</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.macasaet.fernet</groupId>
+            <artifactId>fernet-java8</artifactId>
+        </dependency>
 
         <!-- Test Only Dependencies Below This Line -->
         <dependency>