test: add nonce generator

Signed-off-by: Allain Magyar <[email protected]>

Author: amagyar-iohk

E2E/e2eTests/Source/Abilities/OpenEnterpriseAPI.swift

@@ -424,7 +424,7 @@ class OpenEnterpriseAPI: Ability {
                     )
                 ]),
                 name: "proof_req_1",
-                nonce: "1103253414365527824079144",
+                nonce: Utils.generateNonce(length: 25),
                 version: "1.0"
             )
 
@@ -447,7 +447,6 @@ class OpenEnterpriseAPI: Ability {
             default:
                 throw Error.WrongResponse(response)
             }
-            
         }
 
         func getPresentation(_ presentationId: String) async throws -> Components.Schemas.PresentationStatus {

E2E/e2eTests/Source/Utils.swift

@@ -0,0 +1,20 @@
+import Foundation
+import XCTest
+
+class Utils {
+    static func generateNonce(length: Int) -> String {
+        var result: String = ""
+        
+        while (result.count < length) {
+            var randomByte: UInt8 = 0
+            _ = SecRandomCopyBytes(kSecRandomDefault, 1, &randomByte)
+            if (randomByte >= 250) {
+                continue
+            }
+            let randomDigit = randomByte % 10
+            result += String(randomDigit)
+        }
+        return result
+    }
+}
+