[Bug 1409798] Re: enable hmac-sha2-256, hmac-sha2-512 MAC algorithms

Brian Murray brian at ubuntu.com
Tue Jan 13 16:10:39 UTC 2015


** Changed in: dropbear (Ubuntu)
   Importance: Undecided => Medium

** Changed in: dropbear (Ubuntu)
       Status: New => Triaged

** Tags added: trusty utopic vivid

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Title:
  enable hmac-sha2-256, hmac-sha2-512 MAC algorithms

Status in dropbear package in Ubuntu:
  Triaged
Status in dropbear package in Debian:
  New

Bug description:
  Since version 2013.56, dropbear has supported the hmac-sha2-256 and
  hmac-sha2-512 MAC algorithms, but they are disabled by default.
  According to the dropbear changelog, enabling them is a matter of
  uncommenting the following two lines in options.h:

      /*#define DROPBEAR_SHA2_256_HMAC*/
      /*#define DROPBEAR_SHA2_512_HMAC*/

  Due to recent NSA revelations, some people are recommending users
  disable certain algorithms.  If the recommendations at
  <https://stribika.github.io/2015/01/04/secure-secure-shell.html> are
  followed, there are no MAC algorithms left that dropbear supports
  unless hmac-sha2-256 and hmac-sha2-512 are enabled.

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