(Ruby) PBKDF2 - Derive Key from Password

Demonstrates how to derive a symmetric encryption key from a password using PBKDF2.

For more information, see https://www.chilkatsoft.com/key_derivation_pbkdf2.asp

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

crypt = Chilkat::CkCrypt2.new()

pw = "password"

pwCharset = "utf-8"

# Such as sha256, sha512
hashAlg = "sha256"

# 16 bytes
saltHex = "78578E5A5D63CB0668AB39B21C8637FA"

iterationCount = 100000

# Derive a 256-bit key from the password.
outputBitLen = 256

# The derived key is returned as a hex or base64 encoded string.
# (Note: The salt argument must be a string that also uses
# the same encoding.)
enc = "hex"

hexKey = crypt.pbkdf2(pw,pwCharset,hashAlg,saltHex,iterationCount,outputBitLen,enc)

print hexKey + "\n";

# Sample output:
# AE96E261E32792D0FD6F0E72F8E872D046F7DB4C1FA7C83892EC73C49F461B70