Recipe: Cryptographic tools and hashes


crypt
=====
$ crypt < input_file > output_file
Enter passphrase: 

$ crypt PASSPHRASE < input_file > encrypted_file

Decrypt
=======

$ crypt PASSPHRASE -d < encrypted_file > output_file

gpg
===
$ gpg -c filename

Decrypt gpg file
================
$ gpg filename.gpg


base64
======
$ base64 filename > outputfile
OR
$ cat file | base64 > outputfile


To decode base64 data
=====================
$ base64 -d file > outputfile

$ cat base64_file | base64 -d > outputfile


md5sum and sha1sum
==================
$ md5sum file 
8503063d5488c3080d4800ff50850dc9  file 

$ sha1sum file
1ba02b66e2e557fede8f61b7df282cd0a27b816b  file 

Generating shadow like hash (salted hash)
=========================================
$ openssl passwd -1 -salt SALT_STRING PASSWORD
$1$SALT_STR$323VkWkSLHuhbt1zkSsUG.