# juliansteenbakker/flutter_secure_storage

A Flutter plugin for securely storing sensitive data using encrypted storage.

Repository: https://github.com/juliansteenbakker/flutter_secure_storage
Canonical: https://ross.abutalabs.com/products/flutter_secure_storage
Homepage: https://pub.dev/packages/flutter_secure_storage
Language: C++
License: BSD-3-Clause
License Family: permissive
Topics: flutter, flutter-plugin, dart, dartlang
Last push: 2026-08-26T09:23:23+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 96, longevity 100
- inputs: {"age_days": 3294, "days_push": 7, "days_rel": 27, "gap_med": 6, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1282, forks 520 (observed 2026-08-28T04:04:14.064104+00:00)

## What it is
A Flutter plugin for securely storing sensitive key-value data using platform-specific encrypted storage such as iOS/macOS Keychain, Android Keystore with RSA OAEP + AES-GCM ciphers, and native secure mechanisms on Windows, Linux, and Web. It supports optional biometric authentication and cross-platform configuration options.

## Use cases
- store auth tokens securely in a flutter app
- save sensitive user data with encryption on mobile
- add biometric-protected storage to an android flutter app
- persist secrets in the ios keychain from dart
- secure key-value storage across android ios and desktop
- store credentials encrypted on windows and linux flutter apps

## When to choose
- you are building a Flutter app that needs encrypted storage of tokens, keys, or credentials
- you need cross-platform secure storage including mobile, desktop, and web
- you want optional biometric-gated access to stored secrets on Android or iOS

## When to avoid
- you need a general-purpose database with queries rather than simple key-value secrets
- your web app is not served over HTTPS or localhost
- you are not using Flutter/Dart for your project

## Facets
- artifact type: plugin
- maturity: active
- function: security, cryptography, auth, database
- domain: mobile-development, security, cross-platform, developer-tools
- platform: windows, browser, cross-platform
- tags: flutter-plugin, keychain, keystore, biometric-authentication, key-value-storage, encrypted-storage, dart, android, ios, macos, linux, flutter

## Member repositories
- juliansteenbakker/flutter_secure_storage (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:14.064104+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:57:42.766858+00:00, confidence not recorded.
  - readme: https://github.com/juliansteenbakker/flutter_secure_storage (fetched 2026-08-28T04:04:14.064104+00:00, sha d6f5931ebfe0)
  - homepage: https://pub.dev/packages/flutter_secure_storage (fetched 2026-08-29T12:12:48.516245+00:00, sha a0b7950f17bc)
  - site_page: https://pub.dev/packages/flutter_secure_storage/install (fetched 2026-08-29T12:12:48.528180+00:00, sha 1be8ff66870e)
  - site_page: https://pub.dev/documentation/flutter_secure_storage/latest (fetched 2026-08-29T12:12:48.530078+00:00, sha eb451aef9aa7)
  - site_page: https://pub.dev/packages/flutter_secure_storage/changelog (fetched 2026-08-29T12:12:48.525749+00:00, sha 8fa3dc57c480)
- Data as of 2026-08-30T08:39:29.467469+00:00.