CMS_encrypt
cms = CMS_encrypt(recips, in, EVP_des_ede3_cbc(), flags);
cms = CMS_encrypt(recips, in, EVP_des_ede3_cbc(), flags);
CMS_ContentInfo *CMS_encrypt(STACK_OF(X509) *certs, BIO *in,
content = CMS_encrypt(certstack, msgbio, cipher, CMS_TEXT);