Keychain group access Apr 3, 2010 · 3 minute read · Comments keychain Since iPhone OS 3.0 it has been possible to share data between a family of applications. This can provide a better user experience if you follow the common path of free/premium app…

详细资料,请参看苹果官方文档Keychain Services Reference . ios中的keychain,用于保存用户的机密信息,对keychain的操作有4种,就是 增,删,改,查: SecItemCopyMatching 查 Returns one or more keychain items that match a search query, or copies attributes of specific keychain items. SecItemAdd 增 Adds o…

keychain介绍 iOS keychain 是一个相对独立的空间,保存到keychain钥匙串中的信息不会因为卸载/重装app而丢失, .相对于NSUserDefaults.plist文件保存等一般方式,keychain保存更为安全.所以我们会用keyChain保存一些私密信息,比如密码.证书.设备唯一码(把获取到用户设备的唯一ID 存到keychain 里面这样卸载或重装之后还可以获取到id,保证了一个设备一个ID)等等.keychain是用SQLite进行存储的.用苹果的话来说是一个专业…

1. INTRODUCTION   The main goal of the National Computer Security Center is to encourage the widespread availability of trusted computer systems. In support of that goal a metric was created, the Department of Defense Trusted Computer System Evaluati…

A trusted computer system that offers Linux® compatibility and supports contemporary hardware speeds. It is designed to require no porting of common applications which run on Linux, to be easy to develop for, and to allow the use of a wide variety of…

A method is provided for implementing a mandatory access control model in operating systems which natively use a discretionary access control scheme. A method for implementing mandatory access control in a system comprising a plurality of computers,…

Keychain password access This question has been Answered. janec2070563 May 8, 2018 11:07 AM I constantly get asked for the password to my 'keychain account" I do not know what this even means, still less what a password might be. None of the other pa…

我们知道iOS由于沙盒的存在,应用程序不能越过自己的区域去访问别的存储空间的内容,不过可能有许多场景我们需要在应用程序之间共享数据,比如多个应用共用用户名密码进行登录等.虽然我们不能直接通过文件系统来分享数据,不过还是有些方法可以实现,为了方便说明,这里同时创建了两个工程send和receive,实现这两个app之间的信息共享,send负责写数据,receive负责读数据,具体的demo代码可以到这里获取 UIPasteboard 剪贴板是应用程序之间传递数据的简单方式,建议不要使用全局的粘贴板…

转载来自: http://www.infocool.net/kb/PHP/201607/168683.html a 函数 说明 abs 绝对值 acos 反余弦 acosh 反双曲余弦 addcslashes 以 C 语言风格使用反斜线转义字符串中的字符 addslashes 使用反斜线引用字符串 apache_child_terminate 在本次请求结束后终止 apache 子进程 apache_getenv 获取 Apache subprocess_env 变量 apache_get_mo…

节选自:Securing Windows Server 2003 4.1 Protecting Files with NTFS File Permissions The primary technique for protecting data on a hard drive is to use the built-in NTFS file permissions to allow or restrict specific users and groups. A user could allow…