Access all (user) accounts inside Keychain - ios

Question

I've been looking all around but still not found the answer. Any idea how to return all kSecAttrAccounts from keychain? I would like to get back a list of every identifier I used when creating keychain items, then to choose the one I want to delete it using a "[KeychainWrapper deleteItemFromKeychainWithIdentifier:identifier] method".
It works fine when I remember the username (identifier) I used when creating the account but cannot figure out how to have them all back when you created lots of them.
I tried a kind of basic [dictionary objectForKey:(__bridge(id)kSecAttrAccount)] but it does not make it.
Thanks a lot!!
Tricho

Answer 1

Use kSecMatchLimitAll to get all values in your query dictionary for kSecMatchLimit
(__bridge id)kSecMatchLimitAll, (__bridge id)kSecMatchLimit
It will fetch all passwords in keychain for kSecClassGenericPassword.You can use other keychain classes as well like this
NSMutableDictionary *query = [NSMutableDictionary dictionaryWithObjectsAndKeys:
(__bridge id)kCFBooleanTrue, (__bridge id)kSecReturnAttributes,
(__bridge id)kSecMatchLimitAll, (__bridge id)kSecMatchLimit,
(__bridge id)kSecClassGenericPassword, (__bridge id)kSecClass, //change your class in query
nil];
CFTypeRef result = NULL;
SecItemCopyMatching((__bridge CFDictionaryRef)query, &result);
NSLog(#"%#", (__bridge id)result);
if (result != NULL) CFRelease(result);
EDIT : For delting all keys of your app you can use
+(void)deleteAllKeychainItems{
NSArray *secItemClasses = #[(__bridge id)kSecClassGenericPassword,
(__bridge id)kSecClassInternetPassword,
(__bridge id)kSecClassCertificate,
(__bridge id)kSecClassKey,
(__bridge id)kSecClassIdentity];
for (id secItemClass in secItemClasses) {
NSDictionary *spec = #{(__bridge id)kSecClass:secItemClass};
SecItemDelete((__bridge CFDictionaryRef)spec);
}
}
It will delete all keychain items including all accounts password or values associated.