• [solved]GnuPG creates 4096bit key within seconds, but takes much longer on Ubuntu

    Hi, (hope I posted this in the correct sub-forum)
    when creating a 4096bit RSA key pair ($gpg --full-gen-key) ((1) choice), it takes only seconds for such a long key to create, whereas in Ubuntu it takes minutes. I’m concerned about the randomness/security of such a key. Why is it created within seconds? I’m testing in Virtualbox.
    BTW: When using Seahorse and creating a new key, I can’t click the Create button. Bug? Seahorse seems also not to list any keys created with gpg.

  • The amount of time it takes to generate will depend on how much entropy the system has available at the time. I believe virtualbox guest service starts haveged during boot by default. That could also explain why its faster (if Ubuntu does not enable haveged by default).

  • Thanks, that’s it:
    $ ps -ef | grep haveged
    Ubuntu: nothing
    Arch: "/usr/bin/haveged -F -w 1024 -v 1"
    After killing it takes much longer again.
    Now I’ll search how good haveged is BTW, or what’s the reason for Ubuntu (and probably others) not to run it?

seahorse2 gpg4 gnupg1 Posts 3Views 628
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