$ openssl smime -encrypt -aes-256-cbc -in SN19842256.cfg\
   -out SN19842256.enc -outform PEM SN19842256.crt
$ more SN19842256.enc
-----BEGIN PKCS7-----
MIICigYJKoZIhvcNAQcDoIICezCCAncCAQAxggE+MIIBOgIBADAiMBUxEzARBgNV
BAMMClNOMTk4NDIyNTYCCQDJVuBlaTOb1DANBgkqhkiG9w0BAQEFAASCAQBABvM3
...
LZoq08jqlWhZZWhTKs4XPGHUdmnZRYIP8KXyEtHt
-----END PKCS7-----