add randomness

Author: olehmisar

packages/contracts/noir/lob_router/src/lib.nr

@@ -50,4 +50,7 @@ mod LobRouter {
 pub struct Order {
     pub sell_amount: common::TokenAmount,
     pub buy_amount: common::TokenAmount,
+    /// Hide order contents from other parties and outside world
+    // TODO(perf): not sure if this is needed because orders are secret shared in an MPC network
+    pub randomness: Field,
 }

packages/contracts/sdk/LobService.ts

@@ -59,10 +59,12 @@ export class LobService {
     const seller_order = {
       sell_amount: await params.sellerAmount.toNoir(),
       buy_amount: await params.buyerAmount.toNoir(),
+      randomness: sellerRandomness,
     };
     const buyer_order = {
       sell_amount: await params.buyerAmount.toNoir(),
       buy_amount: await params.sellerAmount.toNoir(),
+      randomness: buyerRandomness,
     };
 
     const input = {