iOS

Reviewing iOS entitlements

App Attest, Keychain, signing and Apple platform controls.

iOS security1 min readEditorial methods

An entitlement defines an application's relationship with a platform capability. Security review should preserve necessary capabilities while limiting unnecessary sharing and access.

Evaluation approach

Review the permissions of the application, extensions and auxiliary targets separately. Compare source settings with the entitlements in the final signed package.

Application example

After adding an SDK, check that Keychain or app-group access has not expanded unnecessarily.

Limits and considerations

A capability visible in the project is not guaranteed to appear in the same form in the distributed package.

Requested capabilities and actual needs

Investigate unnecessary entitlements during integration review. An incorrect necessary entitlement can also cause production failures. Source-project settings alone do not represent the final package.

Read the main application's entitlements together with those of its extensions. For shared storage or key access, document exactly which components can access each data item. Entitlement changes introduced by a new SDK should be visible during release review.

Checks and decisions

  • Review every target
  • Remove unnecessary entitlements
  • Compare signed outputs

Assess differences between development and release packages through functional tests.

Sources

The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.