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Re: next release

Michael Ströder wrote:
Howard Chu wrote:
A lot of my recent commits are actually intended for OpenLDAP 2.5. A few of
the recent TLS-related changes added to the libldap API, so one way or another
they will require a library version bump. The question is whether these
changes should go into the next 2.4 release:
     channel binding support
     OpenSSL elliptic curve support
     logging tls version/cipher info

Currently I'm not keen on elliptic curves.

Agreed. They seem like a trap, frankly. Especially since it's already known that there's a flaw in Dual_EC_DRBG whose very existence is due to the NSA.

Channel binding is interesting but AFAICS current implementations of
SCRAM-SHA-1 still require the userPassword to be in clear-text. So this is not
urgent for now.

The Cyrus-SASL implementation actually looks for authpassword too, in which case it can use a prehashed password as in RFC5803. A bit of a shame that they don't support {scheme}-prefixed userPassword values, as RFC2307 uses.

But I'd like to see better support soon for getting tls version/cipher info in
the logs (ITS#7683). This is much needed to evaluate a certain server deployment.

That should be no problem.

Furthermore also important is more information retrievable by the client:

1. I re-new my feature request "Retrieve LDAP server cert" (ITS#7398). Another
reason for this feature is e.g. client-side cert pinning or similar.

Will look into it.

2. I'd also like to see a LDAP option for retrieving the actually negotiated
tls version/cipher info via ldap_get_option(). I know of
LDAP_OPT_X_TLS_CIPHER_SUITE but a client may enable different features based
on cipher actually negotiated.

Currently these are provided via two new ldap_pvt_tls_get_ functions. (It was just easier this way, since slapd doesn't have an LDAP* session handle.) I suppose for the client side we can provide them via ldap_get_option() as well, but the underlying ldap_pvt functions will be there anyway.

Ciao, Michael.

  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/