Secure storage for credentials in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flutter secure storage package.

Flutter

import '[1]';

Drag options to blanks, or click blank then click option'

Apackage:flutter/material.dart

Bpackage:flutter_secure_storage/flutter_secure_storage.dart

Cpackage:flutter/widgets.dart

Dpackage:flutter_secure_storage/flutter_secure_storage.dartx

Attempts:

3 left

💡 Hint

Common Mistakes

Importing material.dart instead of flutter_secure_storage.

Adding extra characters at the end of the import path.

The correct import for Flutter secure storage is package:flutter_secure_storage/flutter_secure_storage.dart.

2fill in blank

medium

Complete the code to create an instance of FlutterSecureStorage.

Flutter

final storage = [1]();

Drag options to blanks, or click blank then click option'

AFlutterStorage

BSecureStorage

CSecureFlutterStorage

DFlutterSecureStorage

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect class names like SecureStorage or FlutterStorage.

The class to create a secure storage instance is FlutterSecureStorage.

3fill in blank

hard

Fix the error in the code to write a value securely.

Flutter

await storage.write(key: 'token', value: [1]);

Drag options to blanks, or click blank then click option'

A'12345'

B12345

Ctoken

Dtoken123

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a number without quotes causes an error.

Passing a variable name instead of a string literal.

The value must be a string, so it should be enclosed in quotes like '12345'.

4fill in blank

hard

Fill both blanks to read a stored value asynchronously.

Flutter

String? token = await storage.[1](key: [2]);

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Aread

B'token'

C'password'

Dwrite

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'write' instead of 'read' to get a value.

Using wrong key names.

Use read method with the key 'token' to get the stored value.

5fill in blank

hard

Fill all three blanks to delete a stored credential securely.

Flutter

await storage.[1](key: [2]); // Delete the [3]

Drag options to blanks, or click blank then click option'

Adelete

B'password'

Ctoken

D'token'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'write' or 'read' instead of 'delete'.

Using wrong key strings or missing quotes.

Use delete method with the key 'token' to remove the stored token.