openssl cms verfifcation using ca public key && truncate 16 bytes

https://security.stackexchange.com/questions/273870/openssl-cms-sign-and-verify

 openssl cms -verify -nosmimecap -CAfile <rootCA.pem> -in <signature> -content <content> -inform DER -binary| grep Verification

// Truncate 16 bytes

https://stackoverflow.com/questions/60658407/bash-command-to-truncate-bytes-off-end-of-file

// changes original file

truncate -s -16 myfile.json