On Wed, Sep 15, 2004, Antonio Ruiz Martínez wrote: > Hello! > > I've looking at the PKCS7_add_attribute function and I would like to > insert a signed PKCS7 as an attribute. > > The header of the function is: > > PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,void > *value); > > I suppose that nid should be the NID_pkcs7_signed but I don't know which > values should be in atrtype (may it be V_ASN1_SEQUENCE ?) and in value > (der coding of the PKCS7? or the SEQUENCE of the PKCS7, in this case, > how can I get the sequence from the PKCS7?). > > Could you help me, please? > Regards, > Antonio. > >
The NID is whatever OID is defined by whatever standard defines the syntax. If there isn't a standard you might want to create a private OID and document its meaning somewhere. The meaning of atrtype and value are based on the ASN1_TYPE structure. For a sequence atrtype is indeed V_ASN1_SEQUENCE and value is an ASN1_STRING structure containing the encoding of the SEQUENCE. 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 [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
