Just thought about hardening our Apache/PHP server installations and pondering about a general approach. Is it possible to create a configuration in that php code is only then executed, when it is "signed" or the hash sum (e.g. MD5) is known?
Has anyone a suggestion?
Just a head's up: I wouldn't recommend MD5 here, at all.
That being said, PHP Archives (a.k.a. Phar) support code-signing through OpenSSL. This is used in random_compat (see: random_compat.phar and random_compat.phar.pubkey; the .asc file is a GPG signature of the .pubkey file).
The code we use to generate signed Phars is located here.
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://img.manongdao.com/sparkler-677774__340.jpg', '推荐 仙女界的扛把子 的文章《Apache/PHP: Force execution of signed code only (o》','https://www.manongdao.com/article-703357.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}