page_cms man page
page_cmsCMS/PKCS7 message functions.
— CMS is defined in RFC 3369 and is an continuation of the RSA Labs standard PKCS7. The basic messages in CMS is
SignedData Data signed with private key (RSA, DSA, ECDSA) or secret (symmetric) key
EnvelopedData Data encrypted with private key (RSA)
EncryptedData Data encrypted with secret (symmetric) key.
ContentInfo Wrapper structure including type and data.
See the library functions here: hx509 CMS/pkcs7 functions