add Json.FutureKeysResponse

src/json.ml

@@ -192,3 +192,36 @@ module FutureDenom = struct
     |> mem "denom_secmod_sig" EddsaSignature.jsont ~enc:denom_secmod_sig
     |> finish
 end
+
+module FutureKeysResponse = struct
+  open FutureKeysResponse
+
+  let jsont =
+    let make future_denoms future_signkeys master_pub denom_secmod_public_key
+        signkey_secmod_public_key =
+      {
+        future_denoms;
+        future_signkeys;
+        master_pub;
+        denom_secmod_public_key;
+        signkey_secmod_public_key;
+      }
+    in
+    let future_denoms t = t.future_denoms in
+    let future_signkeys t = t.future_signkeys in
+    let master_pub t = t.master_pub in
+    let denom_secmod_public_key t = t.denom_secmod_public_key in
+    let signkey_secmod_public_key t = t.signkey_secmod_public_key in
+    let open Jsont.Object in
+    map ~kind:"FutureKeysResponse" make
+    |> mem "future_denoms" (Jsont.list FutureDenom.jsont) ~enc:future_denoms
+    |> mem "future_signkeys"
+         (Jsont.list FutureSignKey.jsont)
+         ~enc:future_signkeys
+    |> mem "master_pub" EddsaPublicKey.jsont ~enc:master_pub
+    |> mem "denom_secmod_public_key" EddsaPublicKey.jsont
+         ~enc:denom_secmod_public_key
+    |> mem "signkey_secmod_public_key" EddsaPublicKey.jsont
+         ~enc:signkey_secmod_public_key
+    |> finish
+end

src/management.ml

@@ -113,9 +113,10 @@ let keys req server _env =
   let online_key = Vif.Server.device Devices.online_key server in
   let denom_key = Vif.Server.device Devices.denom_key server in
   let denominations = Vif.Server.device Devices.denominations server in
-  let _v =
+  let v =
     mk_future_keys_response ~signkey ~online_key ~denom_key ~denominations
   in
-  let* () = with_string req "keys .. \n" in
+  let s = Json.encode_exn Json.FutureKeysResponse.jsont v in
+  let* () = with_string req s in
   let* () = add ~field:"content-type" "application/json" in
   respond `OK