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Google Authenticator implementation in Python
... converts an HMAC-SHA-1
value into an HOTP value as defined in Section 5.3.
http://tools.ietf.org/html/rfc4226#section-5.3
"""
offset = int(hmac_sha1[-1], 16)
binary = int(hmac_sha1[(offset * 2):((offset * 2) + 8)], 16) & 0x7fffffff
return str(binary)
def _long_to_byte...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ash，有的就简单地轮流分析。这些都不够好，一个是不能完美地负载均衡，另一个静态的方法的致命缺陷是，如果有一台计算服务器死机了，或是我们需要加入新的服务器，对于我们的分配器来说，都需要知道的。另外，还要重...
What is the difference between self::$bar and static::$bar in PHP?
..., you're invoking a feature called late static bindings (introduced in PHP 5.3).
In the above scenario, using self will result in Foo::$bar(1234).
And using static will result in Bar::$bar (4321) because with static, the interpreter takes takes into account the redeclaration within the Bar class du...
What is the closest thing Windows has to fork()?
...the closest thing to it I can find:
Taken from: http://doxygen.scilab.org/5.3/d0/d8f/forkWindows_8c_source.html#l00216
static BOOL haveLoadedFunctionsForFork(void);
int fork(void)
{
HANDLE hProcess = 0, hThread = 0;
OBJECT_ATTRIBUTES oa = { sizeof(oa) };
MEMORY_BASIC_INFORMATION mbi;...
Generating a drop down list of timezones with PHP
...e here is that the $what parameter of listIdentifiers was only added in PHP5.3. It looks like this is also when the constants were added as well, only I still cannot find any reference in the migration guide to 5.3 or in any 5.3.x change log to back this up.
– brendo
...
How to properly add cross-site request forgery (CSRF) token using PHP
...nsed and available on Github and Composer as paragonie/random_compat.
PHP 5.3+ (or with ext-mcrypt)
session_start();
if (empty($_SESSION['token'])) {
if (function_exists('mcrypt_create_iv')) {
$_SESSION['token'] = bin2hex(mcrypt_create_iv(32, MCRYPT_DEV_URANDOM));
} else {
...
Android Archive Library (aar) vs standard jar
...such as layouts, drawables etc. in a JAR file. For more detail see article 5.3 "Creation and Loading" of The Java® Virtual Machine Specification.
So on the question Android Archive Library (aar) vs standard jar. The answer depends on what build tool are you using.
If you are using Android Studio ...
linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...337 -j DROP
有些些特洛伊木马会扫描端口31337到31340(即黑客语言中的 elite 端口)上的服务。既然合法服务都不使用这些非标准端口来通信,阻塞这些端口能够有效地减少你的网络上可能被感染的机器和它们的远程主服务器进行独立通...
Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
Mongo DB数据库保存数据 (NoSQL, Document Store，跨平台，跨语言)
Web API提供数据服务
MVC作数据展示
Knockoutjs动态绑定客户端数据，这里有一个简单的介绍
服务URI Pattern
Action Http verb URI Get contact list GET /api/contacts Get filtered contacts...
Sanitizing strings to make them URL and filename safe?
...ws and Ubuntu can handle Unicode filenames (even RTL ones as it seems) PHP 5.3 requires hacks to deal even with the plain old ISO-8859-1, so it's better to keep it ASCII only for safety.
2. The Lenght of the Filename Matters (Specially on Windows)
On Ubuntu, the maximum length a filename can have ...