php - 异常 : "Could not gather sufficient random data"

Question

客户端出现以下错误

CRITICAL: Uncaught PHP Exception Exception: "Could not gather sufficient random data" at /.../vendor/paragonie/random_compat/lib/random_bytes_mcrypt.php line 69 {"exception":"[object] (Exception(code: 0): Could not gather sufficient random data at /.../vendor/paragonie/random_compat/lib/random_bytes_mcrypt.php:69)"} []

[更正客户端 PHP 版本]

试图查看或编辑记录。客户端在 Symfony 2.8.2、PHP 5.6.18 上，运行在 freebsd 上。我的开发系统是 Symfony 2.8.2、PHP 7、Windows 10，但没有出现此错误。

运行 composer update 不会影响此行为。

Answer 1

答案出现here由 paragonie 的 Scott 提供。它说，

It means precisely what it says: Something about your environment is preventing mcrypt_create_iv($numBytesRequested, MCRYPT_DEV_URANDOM) from generating enough entropy.

Make sure PHP can read /dev/urandom, especially if you're in a chroot jail. Without access to the kernel's CSPRNG, we cannot reliably generate random data suitable for cryptography.

由于该站点位于共享主机上，而我对 freebsd 基本上一窍不通，因此我将其转发给了主机的网站管理员。问题已解决。