GPG依赖于熵生成 [英] GPG hangs on entropy generation

问题描述

在尝试生成GPG密钥(使用gpg --gen-key)时，它可能会在发出消息后挂起:

While attempting to generate GPG keys (using gpg --gen-key), it may hang after emitting the message:

没有足够的随机字节.请做一些其他的工作 操作系统有机会收集更多信息！ (还需要278个字节)

Not enough random bytes available. Please do some other work to give the OS a chance to collect more entropy! (Need 278 more bytes)

gpg(GnuPG)1.4.16

gpg (GnuPG) 1.4.16

Ubuntu 14.04.2 LTS

Ubuntu 14.04.2 LTS

推荐答案

尽管rng-tools可以使用，但不建议这样做，因为它不提供真实的熵.请参阅此处的讨论: https://bugs.launchpad.net/ubuntu /+ source/gnupg/+ bug/706011

Although rng-tools will work, this is not suggested since it doesn't provide real entropy. See the discussion here: https://bugs.launchpad.net/ubuntu/+source/gnupg/+bug/706011

对于那些对此感到沮丧的用户，以下是我发现在没有鼠标/台式机的服务器上有用的一些东西.

For users that are frustrated by this, here are some things I found helpful on a server with no mouse/desktop.

1)完成创建GPG密钥的过程.如果挂起以等待更多的熵，请转到下一步.

1) Go through the process of creating the GPG key. If it hangs waiting for more entropy, go to the next step.

2)您可以通过打开一个终端并键入(这将每秒查看该文件)来观察系统有多少熵:

2) You can watch how much entropy your system has by opening a terminal and type (this will look at that file every second):

watch -n1 cat /proc/sys/kernel/random/entropy_avail

3)打开第三个终端以生成您的熵.您可以尝试各种尝试来增强熵.这是我注意到增加熵足以使gpg起作用的一些方法.请注意，这有点随机(无双关语).有时做一些事情会增加熵.但是当我再次这样做时，它不会:

3) Open a third terminal to generate your entropy. You can try various things to try to boost that entropy. Here are some things that I noticed increased the entropy sufficiently to make gpg work. Note that this was somewhat random (no pun intended). Sometimes doing something would increase the entropy; but when I do it again, it does not:

从互联网上获取大文件

wget http://us1.php.net/get/php-7.2.2.tar.bz2/from/this/mirror

执行一些可以在终端上打印很多内容的操作:

Do something that prints a lot of stuff to the terminal:

ls -R /
sudo find /folder/with/lots/of/files/ -type f | xargs grep 'simple string that shows up in lots of files'

4)如果您执行的操作没有增加entropy_avail，请尝试其他操作.

4) If what you are doing does not increase the entropy_avail, then try something else.

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