## Keyholder Documentation
### Introduction
Keyholder is a powerful library that simplifies the management of key-value pairs in your iOS applications. It provides an easy-to-use interface for securely storing and retrieving sensitive information, such as passwords, API keys, and user preferences. This documentation will guide you through the installation process and help you get started with using Keyholder in your projects.
### Installation
#### CocoaPods
To install Keyholder using CocoaPods, add the following line to your `Podfile`:
“`ruby
pod ‘Keyholder’
“`
Then, run the `pod install` command to download and integrate the library into your project.
#### Manual Installation
If you prefer not to use CocoaPods, you can also install Keyholder manually by following these steps:
1. Download the Keyholder framework from the official GitHub repository.
2. Drag and drop the framework into your Xcode project.
3. Make sure to select the appropriate target when adding the framework.
4. Ensure that the framework is properly linked and included in your project’s build phases.
### Getting Started
#### Importing Keyholder
Before you can use Keyholder, you need to import the framework into your source files. Add the following line at the top of the files where you intend to use Keyholder:
“`swift
import Keyholder
“`
#### Storing a Key-Value Pair
Keyholder provides a simple and secure way to store sensitive information. Simply call the `set(_:key:)` method and pass in the value and key as parameters.
“`swift
Keyholder.set(“myValue”, key: “myKey”)
“`
The value will be securely encrypted and stored in the device’s keychain.
#### Retrieving a Value
To retrieve a stored value, use the `get(key:)` method and pass in the key as a parameter. This method will return an optional value of type `Any?`.
“`swift
if let value = Keyholder.get(key: “myKey”) {
// Do something with the retrieved value
} else {
// Value not found or retrieval failed
}
“`
Make sure to handle the case where the value is not found or the retrieval fails.
### Advanced Usage
Keyholder also provides additional functionality for more advanced use cases. Here are some of the key features:
#### Removing a Key-Value Pair
To remove a stored key-value pair, use the `remove(key:)` method and pass in the key as a parameter.
“`swift
Keyholder.remove(key: “myKey”)
“`
The corresponding value will be securely deleted from the keychain.
#### Checking if a Key Exists
You can check if a specific key exists in the keychain by using the `keyExists(_:)` method and passing in the key as a parameter. This method returns a boolean value indicating whether the key exists.
“`swift
if Keyholder.keyExists(“myKey”) {
// Key exists in the keychain
} else {
// Key does not exist
}
“`
#### Clearing the Keychain
If you need to clear the entire keychain and remove all stored key-value pairs, use the `clearKeychain()` method.
“`swift
Keyholder.clearKeychain()
“`
This method will securely delete all data stored by Keyholder in the device’s keychain.
#### Error Handling
Keyholder reports errors using the `KeyholderError` enum. You can catch and handle errors by using a `do-catch` block.
“`swift
do {
// Perform Keyholder operations
} catch let error as KeyholderError {
// Handle the specific error case
} catch {
// Handle any other unexpected errors
}
“`
### Conclusion
Keyholder simplifies the process of securely storing and retrieving key-value pairs in your iOS applications. With its easy-to-use methods and advanced features, you can handle sensitive information with peace of mind. Check out the official Keyholder GitHub repository for more information and examples.
### Resources
– [Keyholder GitHub Repository](https://github.com/example_user/keyholder)
– [Keyholder Code Examples](https://github.com/example_user/keyholder-examples)
– [Keyholder Issue Tracker](https://github.com/example_user/keyholder/issues)