Hello,

I have a signing certificate with which I sign a message with openssl command line. I do NOT use -nocerts option, so the signing certificate should be embedded in the CMS message. I verify that it exists by retrieving it with command: openssl cms -verify -in infile.ini -certsout cert_to_test.pem and I test the certificate and it works.

Now I want to retrieve the certificate in C, using openssl library. I read the CMS message file, then I read the SMIME and trz to get the signer. Here is the function called:

pBioFile= BIO_new_file(file, "r");

pCms = SMIME_read_CMS(pBioFile, NULL);

pCms_signer = CMS_get0_SignerInfos(pCms);

sk_CMS_SignerInfo_num(pskCms_signer ) -> return 0 meaning no certificates were found.


Can anyone help with what am I doing wrong?


Thanks,
Rares
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