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chrishulbert/Keychain.swift

Last active August 29, 2015 14:23
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Revisions

  1. chrishulbert revised this gist Jun 14, 2015. 1 changed file with 5 additions and 7 deletions.
    12 changes: 5 additions & 7 deletions Keychain.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -28,16 +28,14 @@ struct Keychain {
    var unmanagedResult: Unmanaged<AnyObject>?
    // The '&' below converts it to UnsafeMutablePointer<Unmanaged<AnyObject>?>
    let status = SecItemCopyMatching(query, &unmanagedResult)
    if status == errSecSuccess { // Successful?
    if let unmanagedResult = unmanagedResult { // Returned anything?
    let result: AnyObject = unmanagedResult.takeRetainedValue() // Manage its memory.
    return result as? NSData // Auto-nil if it's not an NSData.
    }
    }
    return nil
    // The 'create rule' means the returned result is +1 retained, so we need to balance that.
    let result: AnyObject? = unmanagedResult?.takeRetainedValue()
    return status == errSecSuccess ? result as? NSData : nil;
    }

    static func setItem(item: NSData, forKey key: String) {
    self.deleteItemForKey(key) // Remove the item if it exists.

    let query = [
    kSecClass as NSString: kSecClassGenericPassword,
    kSecAttrLabel: key,
  2. chrishulbert created this gist Jun 14, 2015.
    49 changes: 49 additions & 0 deletions Keychain.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,49 @@
    //
    // Keychain.swift
    // SwiftKeychain
    //
    // Created by Chris Hulbert on 14/06/2015.
    // Copyright (c) 2015 Chris Hulbert. All rights reserved.
    //

    import Foundation
    import Security

    struct Keychain {

    static func deleteItemForKey(key: String) {
    let query = [
    kSecClass as NSString: kSecClassGenericPassword,
    kSecAttrLabel: key,
    ]
    SecItemDelete(query)
    }

    static func itemForKey(key: String) -> NSData? {
    let query = [
    kSecClass as NSString: kSecClassGenericPassword,
    kSecAttrLabel: key,
    kSecReturnData: kCFBooleanTrue as CFTypeRef,
    ]
    var unmanagedResult: Unmanaged<AnyObject>?
    // The '&' below converts it to UnsafeMutablePointer<Unmanaged<AnyObject>?>
    let status = SecItemCopyMatching(query, &unmanagedResult)
    if status == errSecSuccess { // Successful?
    if let unmanagedResult = unmanagedResult { // Returned anything?
    let result: AnyObject = unmanagedResult.takeRetainedValue() // Manage its memory.
    return result as? NSData // Auto-nil if it's not an NSData.
    }
    }
    return nil
    }

    static func setItem(item: NSData, forKey key: String) {
    let query = [
    kSecClass as NSString: kSecClassGenericPassword,
    kSecAttrLabel: key,
    kSecValueData: item,
    ]
    SecItemAdd(query, nil);
    }

    }