On Sun, Apr 20, 2008, shankar ks wrote: > Hi all, > > I am signing and encrypting a file using PKCS7 Api's . I know that file has > beec signed and encrypted.. but other person on receiving side how can he > knows that the file has been signed and encrypted ? > Is there any Api is there by which we can find out whether the file is > signed or encrypted.. so that he can decrypt and verify the file .. > thanks in advance >
You can determine the outermost type using macros PKCS7_type_is_signed(), PKCS7_type_is_enveloped(). You then normally have to extract the contents and analyse them in a similar way. There is a field which gives the type of the content but this is set to "data" if the content in MIME (which it usually is). Steve. -- Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage OpenSSL project core developer and freelance consultant. 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]
