pseudorandom generator
Let be a deterministic polynomial-time function from to with stretch function , so that if has length then has length . Then let be the distribution on strings of length defined by the output of on a randomly selected string of length selected by the uniform distribution.
Then we say is pseudorandom generator if is pseudorandom.
In effect, translates a random input of length to a pseudorandom output of length . Assuming , this expands a random sequence (and can be applied multiple times, since can be replaced by the distribution of ).
Title | pseudorandom generator |
---|---|
Canonical name | PseudorandomGenerator |
Date of creation | 2013-03-22 13:03:16 |
Last modified on | 2013-03-22 13:03:16 |
Owner | Henry (455) |
Last modified by | Henry (455) |
Numerical id | 6 |
Author | Henry (455) |
Entry type | Definition |
Classification | msc 68Q30 |
Defines | stretch function |