---
title: keyID
framework: storekit
role: symbol
role_heading: Instance Property
path: storekit/product/subscriptionoffer/signature/keyid
---

# keyID

A string that identifies the private key you use to generate the cryptographic signature.

## Declaration

```swift
var keyID: String
```

## See Also

### Getting signature elements

- [nonce](storekit/product/subscriptionoffer/signature/nonce.md)
- [signature](storekit/product/subscriptionoffer/signature/signature.md)
- [timestamp](storekit/product/subscriptionoffer/signature/timestamp.md)