Summary - Secure storage

Combine setItemAsync, getItemAsync and token storage to write an auth system.

Summary - Secure storage

In this group you learned to install the expo-secure-store package, write with setItemAsync, read with getItemAsync, delete with deleteItemAsync and the token storage flow. Secure storage is the core of sensitive data.

In the summary we will merge write, read and delete in a single app. These three pieces together form a real token flow. Let us merge them now.

Exercise Summary - Write a token

Complete the saveToken function. It takes token as a parameter. Call await SecureStore.setItemAsync('token', token).

Show example solution

await SecureStore.setItemAsync('token', token);

Exercise Summary - Read and delete the token

Complete the logout function. Read with const token = await SecureStore.getItemAsync('token'). Delete with if (token) await SecureStore.deleteItemAsync('token').

Show example solution

const token = await SecureStore.getItemAsync('token');
if (token) {
  await SecureStore.deleteItemAsync('token');
}

Test yourself

Write the write function

await SecureStore.____('token', value);

Show answer

await SecureStore.setItemAsync('token', value);

Match each flow part to its role

setItemAsync

Writes
getItemAsync

Reads
deleteItemAsync

Deletes
Bearer

Authorization scheme

Next lesson: Auth context

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