Openssl command
From Teknologisk videncenter
[Encryption/decryption of file]
# Encryption example
enc -aes-128-cbc -k Password1 -pbkdf2 -e -in GHOST.c -out G3.out
#decryption example
enc -aes-128-cbc -k Password1 -pbkdf2 -d -in G3.out -out G3.org