How to Encrypt Backup Files

Method 1: Using GPG

gpg --symmetric --cipher-algo AES256 backup.tar.gz

Decrypt:

gpg --decrypt backup.tar.gz.gpg > backup.tar.gz

Method 2: Using OpenSSL

openssl enc -aes-256-cbc -salt -in backup.tar.gz -out backup.tar.gz.enc

Decrypt:

openssl enc -aes-256-cbc -d -in backup.tar.gz.enc -out backup.tar.gz

Method 3: Encrypt while creating tarball

tar czf - /home | openssl enc -aes-256-cbc -out backup.tar.gz.enc