Hi, assuming that you are the 'vrm' who asked 'know a good start point for learn ASN1 ?' on IRC, here are some pointers :
A short introduction : http://luca.ntop.org/Teaching/Appunti/asn1.html If you want to know everything about ASN.1 : http://asn1.elibel.tm.fr/ There is also a book you should read if you think that reading X.680, X.681, X.683 and X.690 is a kind of punishment : "ASN.1 : Communication entre SystÃmes hÃtÃrogÃnes" de Olivier Dubuisson ISBN 2-287-59670-4 SPRINGER, 65â (this is the french book, you could also download the translated version at http://www.oss.com/asn1/dubuisson.html. Olivier Dubuisson is working for FT R&D at Lannion, France) The book is really good. You have a subproject called ASN.1 where you have many interesting information (from which I have extracted some of the upper links) : http://directory.apache.org/subprojects/asn1/index.html You could also read the wiki pages, even if they are not very good or complete : http://wiki.apache.org/directory/Asn1Home http://wiki.apache.org/directory/TLVPageInfo The SPNEGO stuff could help you to understand how it works, as it is really close to the way it is coded in Sandbox, even if not perfect. If you need more specific informations, mail to the dev list (IRC is cool, but we are not always connected or able to reply... (damn firewall :)) ! Emmanuel LÃcharny
