usage: cryptodir {enc | dec} <key> <in_dir> <out_dir>
<key> 256 bit key in 64 bytes hex format.
To generate key you can use hard time and memory key derivation function such as argon2:
echo -n "some-strong-password" | argon2 some-salt -t 20 -m 20 -r > ./key.txt
Then if you have somedir directory create empty somedir2 directory:
mkdir somedir2
And create empty somedir2/.cryptodir_enc file:
touch somedir2/.cryptodir_enc
Then encrypt:
cryptodir enc `cat ./key.txt` somedir somedir2
Create yet anoder somedir3 directory:
mkdir somedir3
End create empty somedir3/.cryptodir_dec file:
touch somedir3/.cryptodir_dec
And decrypt:
cryptodir dec `cat ./key.txt` somedir2 somedir3
Then files in somedir should be in somedir3 directory.
PS: When you use argon2 to generate key from password remeber to remeber ;) or save not only password but salt and other parameters too.
github.com/pawplo/cryptodir