keychain-swift

iOS/Swift helper functions for storing text in Keychain

This is a collection of helper functions for writing/reading text from a Keychain. As you probably noticed Apple's keychain API is a bit verbose. This class was designed to provide shorter syntax for accomplishing a simple task: reading/writing text values for specified keys.

What's Keychain?

Keychain is a secure storage on iOS device. You can use these functions to store all kind of sensitive data in it: user passwords, credit card numbers, secret tokens etc. Once stored in a Keychain this information is only available to your app, other apps can't see it. Besides that iOS device makes sure this information is kept and processed securely. For example, text stored in Keychain can not be retried from iPhone backup or by examining its file system.

Tested in iOS 7 and 8.

Installation

Copy TegKeychain.swift into your project.

Usage

TegKeychain.set("my key", value: "hello world")

TegKeychain.get("my key")

TegKeychain.delete("my key")

TegKeychain.clear() // delete everything from app's Keychain

In addition to strings one can set/get NSData objects.

TegKeychain.set("my key", value: nsDataObject)

TegKeychain.getData("my key")

Demo app

Reference

The code is based on this example: https://gist.github.com/s-aska/e7ad24175fb7b04f78e7

Repository home

https://github.com/exchangegroup/keychain-swift