ACKeychain

The easiest keychain wrapper for iOS.

ACKeychain requires the Security.framework in order to compile.

ACKeychain is a singleton and can be initalized easily.

Option A:

ACKeychain *keychain = [ACKeychain defaultKeychain];

Option B:

[[ACKeychain defaultKeychain] …];

Storing credentials:

// Save credentials for user1
if ([[ACKeychain defaultKeychain] storeUsername:@"user1" password:nil identifier:@"account1" forService:@"twitter"]) {
    NSLog(@"SAVED credentials for username 'user1' credentials identifier 'account1'");
}

// Save credentials for user2
if ([[ACKeychain defaultKeychain] storeUsername:@"user2" password:@"password" identifier:@"account2" forService:@"twitter"]) {
    NSLog(@"SAVED credentials for username 'user2' credentials identifier 'account2'");
}

// Replace user2 with user3
if ([[ACKeychain defaultKeychain] storeUsername:@"user3" password:@"password" identifier:@"account2" forService:@"twitter"]) {
    NSLog(@"CHANGED credentials for credentials identifier 'account2'");
}    

Retrieving credentials:

// Request all credentials for service 'twitter' (max 99 entries)
NSArray *all = [[ACKeychain defaultKeychain] allCredentialsForService:@"twitter" limit:99];
NSLog(@"All credentials for service 'twitter %@", all);

// Request credentials for account with username 'user1'
NSDictionary *credentials = [[ACKeychain defaultKeychain] credentialsForUsername:@"user1" service:@"twitter"];
NSLog(@"CREDENTIALS: service: %@, identifier: %@, username: %@, password: %@",
    [credentials valueForKey:ACKeychainService],
    [credentials valueForKey:ACKeychainIdentifier],
    [credentials valueForKey:ACKeychainUsername],
    [credentials valueForKey:ACKeychainPassword]);

// Request credentials for account with identifier 'account2'
credentials = [[ACKeychain defaultKeychain] credentialsForIdentifier:@"account2" service:@"twitter"];
NSLog(@"CREDENTIALS: service: %@, identifier: %@, username: %@, password: %@",
    [credentials valueForKey:ACKeychainService],
    [credentials valueForKey:ACKeychainIdentifier],
    [credentials valueForKey:ACKeychainUsername],
    [credentials valueForKey:ACKeychainPassword]);

Removing credentials:

// Delete credentials for account with identifier 'account1'
if ([[ACKeychain defaultKeychain] deleteCredentialsForIdentifier:@"account1" service:@"twitter"]) {
    NSLog(@"DELETED credentials for 'account1'");
}

// Request credentials for account with username 'user3'
if ([[ACKeychain defaultKeychain] deleteCredentialsForUsername:@"user3" service:@"twitter"]) {
    NSLog(@"DELETED credentials for 'user3'");
}

// Delete all account for service MobileMe
if ([[ACKeychain defaultKeychain] deleteAllCredentialsForService:@"MobileMe"]) {
    NSLog(@"DELTED all credentials for service 'MobileMe'");
}