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Example code of easyswoole/compiler

Informations about the package compiler

这是一个很笨的加密器

加密原理

我们可以经常在某些经过加密文件的php文件代码格式大体如下：

以swoole_loader为例子

这个文件。正常情况下,php是无法解析的。但是呢，zend_vm的一些接口，允许我们载入某些文件的时候，对文件进行预处理。因此我的拓展需要做的事情就是，如果遇到这样格式的文件，那么我把他解析为以下两部分：

因此，code就是我经过加密后的目标字符串，显然，我们需要完成的一个步骤就是、字符串到代码的转变。而这个时候，如果有敏感的同学，就会想到一个东西，那就是 。因此以上代码等价于：

但是实际上，并没有这么简单，如果我需要实现对机器授权的限制，那么应该是这样的。

因此，如何保护我这个xxx_loader的实现逻辑，或者是加密秘钥，成为了代码加解密的关键。但是用php的话，容易出现，被逆向比如目前场景的php混淆，很容易破解。 因此就有人提出想法，如果我把这个加密的函数协程php拓展编译成so动态库文件，然后so在做加壳混淆，不就完美的解决了吗。毕竟、so加壳混淆的方案，可是非常成熟的。好了，我的加密拓展，就是这样的思路。

实现步骤

部分测试

弊端

PHP的加密之所以困难，原因在于、PHP是开源的，无论你再怎么编译加密，最终都需要去执行opcode。问题在于，我php是开源的，因此、、、我可以在zen_execute等对应的方法修改源码，打印出来opcode数据进行逆向。为此。。如果需要避免这种方式，那就是我调用自己声明的库。 因此我们可以看到，类似swoole_loader，需要分php版本下载，很大一部分原因，就如我们实现的原理一样，我把php对应版本zend目录下的核心文件，提前引入，防止hook.

All versions of compiler with dependencies

PHP Build Version
Package Version
Requires php Version >=7.1.0
easyswoole/spl Version ^1.1
easyswoole/utility Version ^1.1
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