Sökning: onr:"swepub:oai:DiVA.org:kau-10005" >
Security Implicatio...
Security Implications of Selective Encryption
-
- Lundin, Reine, 1974- (författare)
- Karlstads universitet,Avdelningen för datavetenskap,Centrum för HumanIT,Datavetenskap
-
- Lindskog, Stefan, 1967- (författare)
- Karlstads universitet,Avdelningen för datavetenskap,Centrum för HumanIT,Datavetenskap
-
(creator_code:org_t)
- 2010-09-15
- 2010
- Engelska.
-
Ingår i: MetriSec'10. - New York : ACM. - 9781450303408
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- To be able to perform an analytical and more exact description of security, quantitative security measures are desirable. Two proposed quantitative security measures are entropy and guesswork. When breaking an encrypted message, entropy measures the average number of guesses in an optimal binary search attack, whereas guesswork measures the average number of guesses in an optimal linear search attack. In this paper, we continue to investigate the security implications of a generic selective encryption procedure. That is, how entropy and guesswork changes with the number of encrypted units, i.e., the encryption level. This is done for languages up to thesecond order by deriving equations for entropy of selectively encrypted messages and then transferring the result to guesswork through an equation relating the two measures. Furthermore, unlike entropy, guesswork does not possess the chain rule, however, through the equation relating entropy and guesswork an equation connecting the different guessworks is derived.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Nyckelord
- Computer Security
- Security Measures
- Selective Encryption
- Entropy
- Guesswork
- Datavetenskap
- Computer Science
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
Hitta via bibliotek
Till lärosätets databas