Question

我正在尝试使用Apple的示例代码KeychainTouchID

中的钥匙串标准代码

以下是我的代码片段

SecAccessControlRef sacObject = SecAccessControlCreateWithFlags(kCFAllocatorDefault,
                                            kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly,
                                            kSecAccessControlUserPresence, &error);

if (sacObject == NULL || error != NULL) {
    NSString *errorString = [NSString stringWithFormat:@"SecItemAdd can't create sacObject: %@", error];

    self.textView.text = [self.textView.text stringByAppendingString:errorString];

    return;
}

// we want the operation to fail if there is an item which needs authentication so we will use
// kSecUseNoAuthenticationUI
NSDictionary *attributes = @{
    (id)kSecClass: (id)kSecClassGenericPassword,
    (id)kSecAttrService: @"SampleService",
    (id)kSecValueData: [@"SECRET_PASSWORD_TEXT" dataUsingEncoding:NSUTF8StringEncoding],
    (id)kSecUseAuthenticationUI: (id)kSecUseAuthenticationUIAllow,
    (id)kSecAttrAccessControl: (__bridge_transfer id)sacObject
};

dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    OSStatus status =  SecItemAdd((__bridge CFDictionaryRef)attributes, nil);

    NSString *errorString = [self keychainErrorToString:status];
    NSString *message = [NSString stringWithFormat:@"SecItemAdd status: %@", errorString];

    [self printMessage:message inTextView:self.textView];
});

但是密钥链总是返回错误errSecAuthFailed。相同的代码是代码正在一台iPhone6 +设备上运行，但它不适用于带有iOS 9.x的iPhone5。

经常尝试寻找原因，但没有找到任何有用的东西。我注意到的一件重要事情是，如果我没有设置归因kSecAttrAccessControl，那么它在iPhone5上也能正常工作。所以，我认为这与设置访问控制属性有关。

任何帮助将不胜感激，

钥匙串在iOS应用程序中给出错误errSecAuthFailed

0 个答案: