A quick and simple encrypt and decrypt utility.
quicrypt FILE/FOLDER
quicrypt accepts a single argument: something to en/de-crypt.
If you pass in a normal file (text, image, whatever), it will encrypt it and replace it with filename.gpg. If you pass in a directory, it will replace the whole directory with dirname.gpg.
If you pass in an encrypted file (created via one of the above), it will decrypt, and recreate the file or directory, and put them back.
I had a folder that I kept family documents in. I wanted to keep it encrypted while the machine was running, and to be able to move around a network safely. I created a bash wrapping script around gpg -C, tar, and the like, to encrypt and decrypt.
I started using some systems where I didn't have some of the needed utilities for this little wrapper script available, so I ported it to go, so I can just grab my quicrypt bin to shuffle these files around.
Old script:
command -v gpg >/dev/null 2>&1 || { echo "GPG must be installed" >&2; exit 1; }
#get input filename and make sure it can be used
readonly FILE="${1%/}" #%/ to remove any trailing slashes (esp on directories)
if [ ! -e "$FILE" -o ! -f "$FILE" -a ! -d "$FILE" -o ! -r "$FILE" -o ! -s "$FILE" ]; then
echo "Cannot use "$FILE", might not be readable, or might be empty" >&2
exit 1
fi
# set preferred pinentry mode. pinentry-curses and pinentry-tty are console-based
if file -b "$FILE" | grep "GPG.*encrypted" >/dev/null 2>&1; then
#input file is already encrypted, we are decrypting
echo "decrypting.."
gpg -d "${FILE}"
#if bzipped: Not done. was probably a dir
if file -b "${FILE%.gpg}" | grep "^bzip2" >/dev/null 2>&1; then
echo "expanding directory.."
tar -xjf "${FILE%.gpg}"
fi
rm -rf "$FILE"
else
echo "Encrypting ${FILE}."
#directories cannot be `gpg`d directly. tar first
if [ -d "$FILE" ];then
tar -cj "$FILE" | gpg -c --cipher-algo aes256 -z 0 -o "${FILE}.gpg"
else
gpg -c --cipher-algo aes256 --compress-algo bzip2 -z 9 "${FILE}"
fi
rm -rf "$FILE"
fi
MIT, Copyright (c) 2018 Dan Panzarella