On 06/03/16 20:49, Howard Chu wrote:
Daniel Pocock wrote:
On 06/03/16 20:00, Howard Chu wrote:
Full_Name: Daniel Pocock Version: OS: Debian URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (2001:1620:b22::2042)
There are a few protocols that use a HA1 password hash, such as HTTP DIGEST, SIP DIGEST and TURN (which uses HMAC rather than DIGEST)
Is there a standard LDAP attribute name for storing a HA1 value or should it be stored in a regular userPassword attribute as described in the manual?
The ITS is not for usage questions. You already asked this and were answered on the discussion mailing list.
There is nothing here that requires any OpenLDAP development activity. It's all already handled by the SASL Digest mechanism, as I already noted in the above email.
Closing this ITS.
I didn't open this feature request to ask for somebody to implement it, I'm simply trying to track a number of items that I'm working on myself. Normally I open a bug/feature request in anything I work on in case somebody else wants to work on the same thing, it helps avoid duplication.
The email thread doesn't fully resolve the issue, it does appear to require some plugin to be created for the server side, especially if the LDAP server doesn't keep plain text passwords. Given the fairly generic nature of the DIGEST algorithm, I also felt that when implemented, this code should be contributed to the OpenLDAP repository and not hosted elsewhere.
Take the hint: RTF SASL Digest code. All the code you're asking for has already been implemented in Cyrus SASL and is of zero concern to OpenLDAP.
The most important skill of a programmer is being able to *read* - not being able to write. Any fool can spew code.
I'm not sure if you've seen my reply to the list, it looks like it got stuck in moderation
I understand your point about DIGEST and that may well work for HTTP and SIP. TURN, however, uses HMAC-SHA1 and that involves sending a copy of the entire message body to the authentication server for use in the algorithm: https://tools.ietf.org/html/rfc5766#page-51
CRAM-MD5 from SASL does HMAC but it does not appear to transfer entire message bodies in the manner required for TURN.
DIGEST-MD5 and HMAC-SHA1 both use a HA1 value (or a cleartext password) as the lowest common denominator but otherwise they are not the same.
Your mention of smbk5pwd is totally off base as well. The reason the smbk5pwd module was needed was because Samba 3 and the Kerberos5 KDC both stored their secrets in separate and incompatible formats but everyone wanted central coordinated administration for these separate attributes. If you're writing something from scratch there is no reason to use your own separate and incompatible attribute, and thus there is no reason to require any special synchronization or coordination.
The reason I mentioned that is because it was the closest thing I could find to the concept of storing multiple password hashes, but I'm not locked in to that strategy. If there are cleartext passwords in LDAP then they can be used for all of these algorithms. If the administrator does not want to store cleartext values, however, then the salted password strings used for UNIX logins are not interchangeable with HA1 hashed values, in that case, isn't it necessary to store and synchronize multiple values, hashed with each algorithm?