(Go) 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 Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.
    // 
    crypt := chilkat.NewCrypt2()

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

    sbKey := chilkat.NewStringBuilder()
    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
    fmt.Println("Your token is: ", *crypt.Totp(*sbKey.GetAsString(),"base32","0","",timePeriod,numDigits,-1,"sha1"))

    crypt.DisposeCrypt2()
    sbKey.DisposeStringBuilder()