Lua

PBKDF1 - Derive Key from Password

See more Encryption Examples

Demonstrates how to derive a symmetric encryption key from a password using PBKDF1. This example matches the results found at this URL: http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf

It also matches the output produced by the .NET Framework using this C# code:

            byte[] salt = new byte[] { 0x78, 0x57, 0x8E, 0x5A, 0x5D, 0x63, 0xCB, 0x06 };
            PasswordDeriveBytes cdk = new PasswordDeriveBytes("password", salt);

            cdk.IterationCount = 1000;
            cdk.HashName = "SHA1";

            // generate a 16-byte key
            byte[] key = cdk.GetBytes(16);

Lua

local chilkat = require("chilkat")

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

local crypt = chilkat.Crypt2.new()

-- http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf

local pw = "password"
local pwCharset = "ansi"
-- Hash algorithms may be: sha1, md2, md5, etc.
local hashAlg = "sha1"
-- The salt should be 8 bytes:
local saltHex = "78578E5A5D63CB06"
local iterationCount = 1000
-- Derive a 128-bit key from the password.
local outputBitLen = 128

-- 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.)
local enc = "hex"

local hexKey = crypt:pbkdf1(pw, pwCharset, hashAlg, saltHex, iterationCount, outputBitLen, enc)

print(hexKey)

-- The output should have this value:
-- DC19847E05C64D2FAF10EBFB4A3D2A20