Unicity distance
id:
unicity-distance-243-4829276
title:
Unicity distance
text:
In cryptography, unicity distance is the length of an original ciphertext needed to break the cipher by reducing the number of possible spurious keys to zero in a brute force attack. That is, after trying every possible key, there should be just one decipherment that makes sense, i.e. expected amount of ciphertext needed to determine the key completely, assuming the underlying message has redundancy. Claude Shannon defined the unicity distance in his 1949 paper "Communication Theory of Secrecy S
brand slug:
wiki
category slug:
encyclopedia
description:
Length of ciphertext needed to unambiguously break a cipher
original url:
https://en.wikipedia.org/wiki/Unicity_distance
date created:
date modified:
2024-04-21T20:30:23Z
main entity:
{"identifier":"Q1640661","url":"https://www.wikidata.org/entity/Q1640661"}
image:
fields total:
13
integrity:
14