Hello !
1/ I've read the FAQs and did not find an answer to my question
2/ thanks for reading this ;)
As I was taking a walk through the "pk7_mime.c" code,
I stepped against a piece of code I could'nt really understand,
actually not the code itselfs, but its purpose.
in the PKCS7_verify function:
p7bio=PKCS7_dataInit(p7,tmpin);
(...)
/* We now have to 'read' from p7bio to calculate digests etc. */
for (;;)
{
i=BIO_read(p7bio,buf,sizeof(buf));
if (i <= 0) break;
if (tmpout) BIO_write(tmpout, buf, i);
}
(...)
si=sk_PKCS7_SIGNER_INFO_value(sinfos,i);
signer = sk_X509_value (signers, i);
j=PKCS7_signatureVerify(p7bio, p7, si, signer);
"We now have to 'read' from p7bio to calculate digests etc." -> Why so ?
Why do we have to read the content of BIO *p7bio and write it to BIO *tmpout
to get PKCS7_signatureVerify to work properly ?
I hope you can understand my question ;)
thanks in advance and have a nice day !
Valéry.
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