I'm trying to build a pkcs#15 file to store certificate and the key pair that their data are extracted from a PKCS#12 file and I really don't know where to start. I have already read the pkcs15 structure written by asn.1 syntax. Is there anyone who have experience in this field that could help me?
UPDATE#1: After awhile, I have successful create a pkcs#15 file from PKCS12 file or .pem file by using the tools call pemtrans with the support of openssl and cryptlib. Now I'm finding way to parse the info from this pkcs#15 for further use.