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This article examines how the widely used Objective‑C‑RSA library can cause RSA encryption failures on iOS when multiple threads concurrently add, delete, and query keychain entries using the same tag, leading to error‑25300 and data corruption, and proposes practical fixes.
This article provides a comprehensive tutorial on developing iOS 14 WidgetKit widgets, covering widget sizes, Xcode target creation, configuration options, essential SwiftUI components, timeline refresh mechanisms, communication between the main app and widget via App Groups and Keychain, as well as troubleshooting common issues.
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