Macos SecItemCopyMatching可以'；t读取iCloud钥匙链

我从堆栈溢出中获取代码以访问一些web浏览器密码。只要密码在登录密钥链中，它就工作得很好。在某个时刻，我感兴趣的特定帐户被移动到iCloud密钥链，并且不再存在于登录密钥链中。SecItemCopyMatching找不到它。它返回OSStatus-23500，即“未找到项目”。如何访问这些条目

CFArrayRef result = NULL;
NSDictionary *params = @{ (__bridge id)kSecClass            : (__bridge id)kSecClassInternetPassword,
                        (__bridge id)kSecMatchLimit       : (__bridge id)kSecMatchLimitAll,
                        (__bridge id)kSecReturnAttributes : (__bridge id)kCFBooleanTrue,
                        (__bridge id)kSecAttrProtocol     : (__bridge id)kSecAttrProtocolHTTPS,
                        (__bridge id)kSecAttrServer       : @"accounts.mydomain.com"
                        };
OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)(params), (CFTypeRef *) &result);

if (status == noErr) {
   // item found!
}