recip_info in enveloped messages

[Manuel Mollar]

Building a enveloped message with the 'enc.c' program, I see the call

PKCS7_add_recipient(p7,sk_X509_value(recips, i))

for every recipient.

The source code of PKCS7_add_recipient does:

1. a call to

PKCS7_RECIP_INFO_set(ri,x509)
p7i->cert=x509
that does:



a call to

PKCS7_add_recipient_info(p7,ri)
that pushes ri into the stack of p7

So, I conclude that the call to PKCS7_add_recipient adds a copy of the certificate of the destination. And using gdb I have verified it.
But, when the program 'enc' finishes, the generated pkcs7 object does not contain this certificates, only the issuer_and_serial.
In fact, this is what I expected before reading the code.
Can someone explain what happens?

-- 
        Manuel Mollar Villanueva
        Prof TEU depto informatica, UJI
        http://moon.act.uji.es
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