How to store data in flutter secure storage

secure data storage in flutter with flutter secure storage: a comprehensive guide

this tutorial will guide you through the process of securely storing data in your flutter applications using the `flutter_secure_storage` package. we'll cover everything from setting up the package to implementing various storage scenarios, addressing common considerations, and highlighting best practices.

**why use flutter secure storage?**

storing sensitive data like user credentials, api keys, or encryption keys directly in your application code or in plain text files is a major security risk. `flutter_secure_storage` provides a more robust solution by leveraging the platform's native secure storage mechanisms.

* **ios:** uses the keychain
* **android:** uses the keystore or encrypted sharedpreferences (depending on android version and configuration). on android m (api 23) and above, `flutter_secure_storage` utilizes the android keystore, providing hardware-backed security when available. on older devices, it falls back to software-based encryption.

**advantages:**

* **enhanced security:** data is encrypted and stored securely within the platform's protected storage.
* **platform integration:** seamlessly integrates with native security features, ensuring consistency across devices.
* **ease of use:** provides a simple and intuitive api for storing and retrieving data.
* **avoidance of plain text:** prevents storing sensitive information in easily accessible formats.

**prerequisites:**

* basic understanding of dart and flutter programming concepts.

**step 1: adding the `flutter_secure_storage` package**

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