Expand proof request API with attribute id and requested predicates

Author: lauravuo-techlab

idl/v1/protocol.proto

@@ -129,9 +129,22 @@ message Protocol {
     message Attribute {
       string name = 1;
       string cred_defID = 2;
+      // optional attribute ID
+      string ID = 3;
     }
     repeated Attribute attributes = 1;
   }
+  // Predicates is helper type for proof request predicate lists
+  message Predicates {
+    message Predicate {
+      string name = 1;
+      string p_type = 2;
+      int64 p_value = 3;
+      // optional predicate ID
+      string ID = 4;
+    }
+    repeated Predicate predicates = 1;
+  }
   // Protocol specific message type.
   message PresentProofMsg {
     // AttrFmt includes attributes either in JSON (previous API format, and
@@ -140,6 +153,11 @@ message Protocol {
       string attributesJSON = 1;
       Proof attributes = 2;
     }
+    // requested predicates (indy) (optional)
+    oneof PredFmt {
+      string predicatesJSON = 3;
+      Predicates predicates = 4;
+    }
   }
   // Protocol specific message type.
   message BasicMessageMsg {