On Wed, Dec 14, 2005, Vadim Godunko wrote: > Hello, > > I am tring to use X509_ATTRIBUTE in X.509 attribute certificate, but I am > not undestand it usage. So, I use X509_ATTRIBUTE_create function for create > attribute, but this work only for simple ASN.1 types (INTEGER, for > example). Creatation of attributes of ASN1_SEQUENCE type raise segfault on > i2d conversion. > > Is it possible to reuse X509_ATTRIBUTE for complex ASN.1 structures? What I > must do for that?
The X509_ATTRIBUTE type uses an ASN1_TYPE structure to hold the attribute data. A SEQUENCE (and other structured types) is contained in an embedded ASN1_STRING structure whose contents are the complete encoding of the relevant type. So you pass V_ASN1_SEQUENCE for the "attrtype" parameter and the encoding and length in the "data" and "len" parameters respectively. Steve. -- Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage OpenSSL project core developer and freelance consultant. Funding needed! Details on homepage. Homepage: http://www.drh-consultancy.demon.co.uk ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
