Basic-Linux-and-Debian-Packages/file_encryption_decryption.sh at main · Sai-Ishaan/Basic-Linux-and-Debian-Packages · GitHub

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#!/bin/bash

encrypt_file(){
  FILE=$(zenity --file-selection --title="Select the file to encrypt")

  if [ -z "$FILE"  ]; then
   zenity --error --text="No file selected"
   exit 1
  fi

  Op_file=$(zenity --file-selection --save --confirm-overwrite --title="Save Encrypted as:")

  if [ -z "$Op_file" ]; then
   zenity --error --text="File Not Selected"
   exit 1
  fi

  passwd=$(zenity --password --title="Enter Encryption Password")

  if [ -z "$passwd" ]; then
    zenity --error --text="No password entered"
    exit 1
  fi

  openssl enc -des-ede3-cbc -salt -in "$FILE" -out "$Op_file" -pass pass:"$passwd"

  if [ $? -eq 0 ]; then
    zenity --info --text="File Encryption Successful"

  else
    zenity --error --text="Encryption Failed"

  fi

}

decrypt_file(){
       FILE=$(zenity --file-selection --title="Select a file to decrypt")

       if [ -z "$FILE" ]; then
        zenity --error --text="No file selected"
        exit 1
       fi

   Op_file=$(zenity --file-selection --save --confirm-overwrite --title="Save decrypted as:")

  if [ -z "$Op_file" ]; then
   zenity --error --text="File Not Selected"
   exit 1
  fi

  passwd=$(zenity --password --title="Enter Password to Decrypt")

  if [ -z "$passwd" ]; then
    zenity --error --text="No password entered"
    exit 1
  fi
   echo "$passwd" > password.txt
  openssl enc -d -des-ede3-cbc -salt -in "$FILE" -out "$Op_file" -pass file: password.txt

  rm password.txt

  if [ $? -eq 0 ]; then
   zenity --info --text="File Decrypted Successful"

  else
   zenity --error --text="Decryption Failed"
  fi

}


ACTION=$(zenity --list --radiolist --column "Select" --column "Action" TRUE "Encrypt" FALSE "Decrypt" --title="Choose Action")

case $ACTION in
  Encrypt)
  encrypt_file
  ;;

  Decrypt)
  decrypt_file
  ;;
  *)
  zenity --error --text="No valid operation chosen"
  exit 1
  ;;

esac