crypto_box | Easy to use , modern symmetric encryption on the command line | Encryption library

$ echo foobar | lock_box > locked.box
4a5c4119c24b0db47bb4b4d8383c716ea390f04553f8877d0c94099e1ac12eb6
$ ls -l locked.box
-rw-r--r--+ 1 user  staff  48 Jun 18 12:20 locked.box

$ ls -l secret.key
ls: secret.key: No such file or directory
$ echo fo  

$ open_box -k secret.key < locked.box
foobar

$ echo foobar | lock_box -k secret.key > locked.box
$ ls -l locked.box secret.key
-rw-r--r--+ 1 user  staff  48 Jun 18 12:27 locked.box
-r--------+ 1 user  staff  48 Jun 18 12:27 secret.key
$ echo "  

2^192 * 64 KiB = 3.923188585E56 KiB
               = 3.831238852E53 MiB
               = 3.741444192E50 GiB
               = 3.653754093E47 TiB
               = 3.568119232E44 PiB
               = 3.484491437E41 EiB
               = 3.402823669E38 Zi