Shell Script To Encrypt Any Text File
Posted in File-management » Security
In cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called cipher) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key.
Mcrypt is a simple crypting program, a replacement for the old unix crypt(1). When encrypting or decrypting a file, a new file is created with the extension .nc and mode 0600. The new file keeps the modification date of the original. The original file may be deleted by specifying the -u parameter. If no files are specified, the standard input is encrypted to the standard output.
Sample Shell Script Wrapper To Encrypt Any Text File
#!/bin/bash # Write a shell script to encrypt any text file # ------------------------------------------------------------------------- # Copyright (c) 2001 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version 2.0 or above # ------------------------------------------------------------------------- # This script is part of nixCraft shell script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # ------------------------------------------------------------------------- file=$1 echo -n "Enter a file name : " read file if [ ! -f $file ] then echo "$file not a file!" exit 1 fi echo -n "Enter a Password : " read password # do encryption using UNIX crypt command # this command will prompt for a password crypt $password < $file > $file.cpy echo "$file.cpy created as encrypted file"
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Tags: algorithm, cipher, crypt command, cryptographic software, Cryptography, decryption, encrypted, Encryption, mcrypt, mcrypt command, password crypt, plaintext, symmetric key cryptography, unix crypt ~ Last updated on: September 14, 2008
please how i can install crypt ?
i type crypt and tap he give me cryptsetup!!
can u please help us what is this mean?
thank you
good job