function to create One Time Passwords (OTP)

[Matthias Rebbe | M-R-D]

Hi,

thanks for clarifying. I forgot to mention that my function creates a mobile-otp (mOTP).
So using only otp in the topic and in the text was misleading.

To create a mOTP i need to use the seconds and divide them by 10 in my function, otherwise login will not work on devices which support mOTP.
Okay i could use milliseconds and divide them by 10000, but that would be the same.

Please excuse the confusion.


Matthias

Am 09.07.2014 um 18:37 schrieb Dr. Hawkins <dochawk at gmail.com>:

> On Mon, Jul 7, 2014 at 11:21 PM, Matthias Rebbe | M-R-D <
> matthias_livecode_150811 at m-r-d.de> wrote:
> 
>> i don´t understand the meaning of your last sentence and google translate
>> is also not helpful.
>> Does it make a difference if using milliseconds and divide them by 1000
>> and by 10?
>> 
> 
> Using the seconds narrows down the key to just a few if someone knows when
> the key is generated.  Just try all in +/- 20 seconds, and they have the
> key.
> 

> The milliseconds, though, changes a thousand times a second, at least
> making a larger search space (and the long seconds would be even better,
> but that's mac only)
> 
> Mac, unix, and phones will generally have their time to within a second or
> two of one another; I don't know if time server sync finally works on
> windows yet or not.
> 
> -- 
> Dr. Richard E. Hawkins, Esq.
> (702) 508-8462
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