krb5-1.15-beta1 is available

Tom Yu tlyu at
Thu Oct 20 16:15:49 EDT 2016

Hash: SHA1

MIT krb5-1.15-beta1 is now available for download from

The main MIT Kerberos web page is

Please send comments to the krbdev list.  We plan for the final release
to occur in about a month.  The README file contains a more extensive
list of changes.

Major changes in 1.15

Administrator experience:

* Add support to kadmin for remote extraction of current keys without
  changing them (requires a special kadmin permission that is excluded
  from the wildcard permission), with the exception of highly
  protected keys.

* Add a lockdown_keys principal attribute to prevent retrieval of the
  principal's keys (old or new) via the kadmin protocol.  In newly
  created databases, this attribute is set on the krbtgt and kadmin

* Restore recursive dump capability for DB2 back end, so sites can
  more easily recover from database corruption resulting from power
  failure events.

* Add DNS auto-discovery of KDC and kpasswd servers from URI records,
 in addition to SRV records.  URI records can convey TCP and UDP
 servers and master KDC status in a single DNS lookup, and can also
 point to HTTPS proxy servers.

* Add support for password history to the LDAP back end.

* Add support for principal renaming to the LDAP back end.

* Use the getrandom system call on supported Linux kernels to avoid
  blocking problems when getting entropy from the operating system.

Code quality:

* Clean up numerous compilation warnings.

* Remove various infrequently built modules, including some preauth
  modules that were not built by default.

Developer experience:

* Add support for building with OpenSSL 1.1.

* Use SHA-256 instead of MD5 for (non-cryptographic) hashing of
  authenticators in the replay cache.  This helps sites that must
  build with FIPS 140 conformant libraries that lack MD5.

Protocol evolution:

* Add support for the AES-SHA2 enctypes, which allows sites to conform
  to Suite B crypto requirements.
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