A simple wrapper for the iOS / MacOS Keychain to allow you to use it in a similar fashion to User Defaults, but securely.
Written in Swift
Safely handles errors via do-catch statements (No unnecessary unwrapping and checking Bool values to see if data is saved, as you'll have to do using most popular libraries).
Preparation:
Instantiate an KeychainWrapper instance:
(Yep, no singletons, we care about app architecture.)
let secureStorage = KeychainWrapper()Save data to Keychain:
do {
let value = try secureStorage.set(token, forKey: "token")
} catch {
print(error.localizedDescription)
}
// OR, simply
// try? secureStorage.set(token, forKey: "token")Retrieve data from Keychain:
do {
let value = try secureStorage.get(forKey: "token")
} catch {
print(error.localizedDescription)
}Delete entry from Keychain:
try? secureStorage.delete(forKey: "token")
// NOTE: Also you can set entry to empty string to remove it from Keychain
// try? secureStorage.set("", forKey: "token")To update value for key, just set it as new:
try? secureStorage.set(token, forKey: "token")
try? secureStorage.set(newToken, forKey: "token")