<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "iPadOS: 13.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.15.0 -",
    "tvOS: 13.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AuthenticationServices",
  "identifier" : "/documentation/AuthenticationServices/ASAuthorizationOpenIDRequest/nonce",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Authentication Services"
    ],
    "preciseIdentifier" : "c:objc(cs)ASAuthorizationOpenIDRequest(py)nonce"
  },
  "title" : "nonce"
}
-->

# nonce

A string value to pass to the identity provider.

```
var nonce: String? { get set }
```

## Discussion

You can verify this value with the identity token provided as part of a successful ASAuthorization response.

The nonce size may depend on the actual technology used, and an error might be returned by the request execution.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)