1
$\begingroup$

I understand what is happening and how the endpoint is computed but I'm still a bit unsure of where "SP" (Staring Point) came from. Are the starting points, randomly selected keys from the key-space n?

for example...

TMTO

$\endgroup$
2
  • 1
    $\begingroup$ What reference are you pulling this terminology from? That context would be helpful. $\endgroup$
    – mikeazo
    Commented Apr 11, 2016 at 14:47
  • $\begingroup$ Sorry, I've included an example image. Alot of images that I find start with either S or SP for starting point. I'm just trying to figure out exactly what this is. $\endgroup$
    – ellefc
    Commented Apr 11, 2016 at 15:04

1 Answer 1

1
$\begingroup$

Given the diagram, yes they are randomly selected keys, $P$ is a fixed plaintext and the projection of the output to the keyspace gives you the next input as key to the cipher, thus creating a pseudorandom walk through the keyspace.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.