one-way function
A function is a one-way function if for any probabilistic, polynomial time computable function and any polynomial function there is such that for all :
where has length and all numbers of length are equally likely.
That is, no probabilistic, polynomial time function can effectively compute .
Note that, since need not be injective, this is a stricter requirement than
since not only is (almost always) not , it is (almost always) no value such that .
Title | one-way function |
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Canonical name | OnewayFunction |
Date of creation | 2013-03-22 13:03:14 |
Last modified on | 2013-03-22 13:03:14 |
Owner | Henry (455) |
Last modified by | Henry (455) |
Numerical id | 7 |
Author | Henry (455) |
Entry type | Definition |
Classification | msc 68Q30 |
Synonym | one way function |
Synonym | one-way |
Synonym | one way |