(PowerShell) PBKDF2 Key Derivation

Demonstrates AES secret key derivation from a password using PBDKF2.

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

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

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

$crypt = New-Object Chilkat.Crypt2

$password = "correcthorsebatterystaple"

# Derive from the utf-8 byte representation of the password.
$charset = "utf-8"

$hashAlg = "sha256"

$crypt.EncodingMode = "hex"
$saltHex = $crypt.GenRandomBytesENC(16)

$iterationCount = 310000

# 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 = $crypt.Pbkdf2($password,$charset,$hashAlg,$saltHex,$iterationCount,$outputBitLen,$enc)

$($hexKey)

# Sample output:
# 597734C894FF89CFD3B93D925462C24E97724BCB118F6FC919007F5ABC27E768