3 ms·
I remeber in the very early 2000s, a guy had a stopwatch sized whos-it, and it kept flashing numbers on it. Updated every 5 minutes. Apparently, some cesium b
by b112 4y ago
I remeber in the very early 2000s, a guy had a stopwatch sized whos-it, and it kept flashing numbers on it. Updated every 5 minutes.
Apparently, some cesium based list of numbers, again, was 20 years ago.
Point is, it was a one time pad...
- dekhn 4y agoYou mean this? https://en.wikipedia.org/wiki/RSA_SecurID https://en.wikipedia.org/wiki/RSA_SecurID I'm not sure but I don't think this is OTP?
- g_p 4y agoIndeed, they're not one-time pads - they are symmetric authenticators where both sides hold the same seed, and iterate a PRNG or similarly iterable function every N units of time (say, 30 seconds), to give you the same new output, based on the same starting seed. Think stream cipher output, with an initialisation vector. They are often called OTPs though (i.e. one-time passcodes), just to cause confusion.
- djmips 4y agoA Whatsit. A Thingamabob. A doohickey. I remember those - people still use them I think?