(PowerShell) Generate TOTP using Base32 Secret (6 Digits, Time-based, 30-second period)

Generates a 6-digit time-based TOTP code using a base32 secret with a 30-second time period.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.
# 
$crypt = New-Object Chilkat.Crypt2

# Base32 secret key:
$secretKey = "oebf ytfl qmzb p4xd 2ztf zyz4 hjrw 3uyo"

$sbKey = New-Object Chilkat.StringBuilder
$success = $sbKey.Append($secretKey)

# Remove SPACE chars.
$numRemoved = $sbKey.Replace(" ","")

# Note: A new token is generated every 30 seconds.  You must generate within the same 30 second interval to get the same result.

# Generate 6 digits.
$numDigits = 6
# 30 second time period.
$timePeriod = 30
$("Your token is: " + $crypt.Totp($sbKey.GetAsString(),"base32","0","",$timePeriod,$numDigits,-1,"sha1"))