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#keychain

2 stories

Banner: three storage boxes for settings, cached data and secrets in a Flutter app

Mobile Development

Flutter local storage: shared_preferences vs Hive vs flutter_secure_storage

John Nguyen · May 29, 2026 · 8 min read

A security review found refresh tokens sitting in plain text in our Flutter app's preferences file. This guide sorts local data into three buckets, explains what shared_preferences, Hive (and its maintained hive_ce fork) and flutter_secure_storage actually do on each platform, and covers the uninstall and backup traps.

Banner: iOS CI build hung at codesign then failed with errSecInternalComponent because the keychain was locked

Mobile Development Bug Report

iOS CI build hung at codesign, then failed with errSecInternalComponent: the keychain was locked

Marcus Lindqvist · Feb 4, 2025 · 7 min read

After moving iOS builds to a self-hosted Mac runner with fastlane match, archives hung for an hour at the codesign step, or failed with errSecInternalComponent. codesign was waiting for a keychain it could not unlock without a GUI prompt. How setup_ci, a temporary keychain and the key partition list fixed it.