There can be cases when you want to password protect the tar files. There are two ways you can do it.

First Method Using SSL and Salt:

Encrypt:

tar -cj directory | openssl des3 -salt > encrypted.tarfile

Decrypt:

cat encrypted.tarfile | openssl des3 -d -salt |tar -xvj

Second Method Using GPG:

Encrypt:

gpg -c

It will then ask for the password, you can type the password and retype it and it will generate the file having .gpg extension which is an encrypted file.

Decrypt:

gpg