Encrypt files & folders for Mac & Linux

evancrypt.sh

#!/bin/sh
#
# This is a free to use, free to restribute,
# free to fork and free to edit software.
#
# No responsibility is granted for its use
#
# Contributors:
# - Evangelos Pappas <epappas@evalonlabs.com>
#
# Enjoy!

DRY_MODE=0
ENCR_MODE=1
DECR_MODE=0
CIPHER=aes-256-cbc

set -e

run_main(){
  if [ $ENCR_MODE -ne 0 ]; then
      tar -cf - ${FILE_IN} | openssl ${CIPHER} -salt -out ${FILE_IN}.tar.aes
  else
      openssl ${CIPHER} -d -salt -in ${FILE_IN} | tar -x -f -
  fi
}

if [ $# -eq 0 ]; then
  exit 0
fi

if [ ! -z "$(echo $@ | grep -e "--decrypt")" ]; then
  shift
  ENCR_MODE=0
  DECR_MODE=1
fi

FILE_IN=$1

run_main