Skip to Content [alt-c]

Andrew Ayer

Sections

LibreSSL's PRNG is Unsafe on Linux [Update: LibreSSL fork fix]

Comment by Andrew Ayer

Posted in reply to Comment by Reader Richard Yao.

This comment is owned by whoever posted it. I am not responsible for it in any way.

As another commenter pointed out, Linux, as do many Unixes, has chroot(). If you're going to start a program's execution from inside a chroot, it makes sense to set up a basic directory structure. However, a very common privilege separation technique is to start execution outside the jail, open all the resources you need, and then chroot into a completely empty unwritable directory. OpenSSL has the API to make this work (as do other crypto libraries such as libsodium); LibreSSL does not.

| Posted on 2014-07-16 at 00:13:06 UTC by Andrew Ayer | Parent | Reply to This

Post a Reply

Your comment will be public. If you would like to contact me privately, please email me. Please keep your comment on-topic, polite, and comprehensible. Use the "Preview" button to make sure your comment is properly formatted. Name and email address are optional. If you specify an email address it will be kept confidential.

Post Comment


(Optional; will be published)


(Optional; will not be published)


(Optional; will be published)


  • Blank lines separate paragraphs.
  • Lines starting with ">" are indented as block quotes.
  • Lines starting with two spaces are reproduced verbatim.
  • Text surrounded by *asterisks* is italicized.
  • Text surrounded by `back ticks` is monospaced.
  • URLs are turned into links.