ldap_search with Binary data ?

[Giovanni Faglioni <giova@comune.modena.it>]

	Hi,
	is it possible to search for an ldap entry
	using a binary attribute ?

	We'd like to find some (digitally signed) attributes 
	of a user, given it's ssl client-certificate.

	We're using openldap-1.2. We've seen that a search
	for (usercertificate;binary=*) works, but we need to
	find only one certificate and not all of them.

	Any hint ?

	--Gio'