Using openssl to conduct symmetric encrypt/decrypt (aes-256-cbc)

#Encrypt 

openssl aes-256-cbc -in $TARGZ_BASENAME -out $TARGZ_BASENAME.enc

#Decrypt

openssl aes-256-cbc -d -in $TARGZ_BASENAME.enc -out $TARGZ_BASENAME

Reference:

https://gist.github.com/fcoury/4890d7831d7e83ba1782