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- Confusion_and_diffusion abstract "In cryptography, confusion and diffusion are two properties of the operation of a secure cipher which were identified by Claude Shannon in his paper Communication Theory of Secrecy Systems, published in 1949.Confusion means that each character of the ciphertext should depend on several parts of the key. Diffusion means that if we change a character of the plaintext, then several characters of the ciphertext should change, and similarly, if we change a character of the ciphertext, then several characters of the plaintext should change.In Shannon's original definitions, confusion refers to making the relationship between the ciphertext and the symmetric key as complex and involved as possible; diffusion refers to dissipating the statistical structure of plaintext over bulk of ciphertext. This complexity is generally implemented through a well-defined and repeatable series of substitutions and permutations. Substitution refers the replacement of certain components (usually bits) with other components, following certain rules. Permutation refers to manipulation of the order of bits according to some algorithm. To be effective, any non-uniformity of plaintext bits needs to be redistributed across much larger structures in the ciphertext, making that non-uniformity much harder to detect.In particular, for a randomly chosen input, if one flips the i-th bit, then the probability that the j-th output bit will change should be one half, for any i and j—this is termed the strict avalanche criterion. More generally, one may require that flipping a fixed set of bits should change each output bit with probability one half.One aim of confusion is to make it very hard to find the key even if one has a large number of plaintext-ciphertext pairs produced with the same key. Therefore, each bit of the ciphertext should depend on the entire key, and in different ways on different bits of the key. In particular, changing one bit of the key should change the ciphertext completely.The simplest way to achieve both diffusion and confusion is to use a substitution-permutation network. In these systems, the plaintext and the key often have a very similar role in producing the output, hence the same mechanism ensures both diffusion and confusion.".
- Confusion_and_diffusion wikiPageExternalLink shannon1949.pdf.
- Confusion_and_diffusion wikiPageID "537555".
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- Confusion_and_diffusion wikiPageOutDegree "14".
- Confusion_and_diffusion wikiPageRevisionID "678114038".
- Confusion_and_diffusion wikiPageWikiLink Avalanche_effect.
- Confusion_and_diffusion wikiPageWikiLink Category:Symmetric-key_cryptography.
- Confusion_and_diffusion wikiPageWikiLink Cipher.
- Confusion_and_diffusion wikiPageWikiLink Ciphertext.
- Confusion_and_diffusion wikiPageWikiLink Claude_Elwood_Shannon.
- Confusion_and_diffusion wikiPageWikiLink Claude_Shannon.
- Confusion_and_diffusion wikiPageWikiLink Communication_Theory_of_Secrecy_Systems.
- Confusion_and_diffusion wikiPageWikiLink Cryptography.
- Confusion_and_diffusion wikiPageWikiLink Plaintext.
- Confusion_and_diffusion wikiPageWikiLink Substitution-permutation_network.
- Confusion_and_diffusion wikiPageWikiLink Symmetric-key_algorithm.
- Confusion_and_diffusion wikiPageWikiLink Symmetric_key.
- Confusion_and_diffusion wikiPageWikiLinkText "Confusion and diffusion".
- Confusion_and_diffusion wikiPageWikiLinkText "confusion and diffusion".
- Confusion_and_diffusion wikiPageWikiLinkText "confusion".
- Confusion_and_diffusion wikiPageWikiLinkText "diffusion".
- Confusion_and_diffusion wikiPageWikiLinkText "diffusive".
- Confusion_and_diffusion wikiPageWikiLinkText "property of confusion".
- Confusion_and_diffusion hasPhotoCollection Confusion_and_diffusion.
- Confusion_and_diffusion wikiPageUsesTemplate Template:Crypto-stub.
- Confusion_and_diffusion wikiPageUsesTemplate Template:Refimprove.
- Confusion_and_diffusion wikiPageUsesTemplate Template:Reflist.
- Confusion_and_diffusion subject Category:Symmetric-key_cryptography.
- Confusion_and_diffusion hypernym Properties.
- Confusion_and_diffusion type Article.
- Confusion_and_diffusion type Building.
- Confusion_and_diffusion type Article.
- Confusion_and_diffusion comment "In cryptography, confusion and diffusion are two properties of the operation of a secure cipher which were identified by Claude Shannon in his paper Communication Theory of Secrecy Systems, published in 1949.Confusion means that each character of the ciphertext should depend on several parts of the key.".
- Confusion_and_diffusion label "Confusion and diffusion".
- Confusion_and_diffusion sameAs Confusió_i_difusió.
- Confusion_and_diffusion sameAs Diffusion_(Kryptologie).
- Confusion_and_diffusion sameAs Confusión_y_difusión.
- Confusion_and_diffusion sameAs آشفتگی_و_پخش.
- Confusion_and_diffusion sameAs Confusion_et_diffusion.
- Confusion_and_diffusion sameAs Confusione_e_diffusione.
- Confusion_and_diffusion sameAs m.02mvsr.
- Confusion_and_diffusion sameAs Confusion_and_diffusion.
- Confusion_and_diffusion sameAs Плутанина_і_поширення.
- Confusion_and_diffusion sameAs Q1224520.
- Confusion_and_diffusion sameAs Q1224520.
- Confusion_and_diffusion sameAs 混淆與擴散.
- Confusion_and_diffusion wasDerivedFrom Confusion_and_diffusion?oldid=678114038.
- Confusion_and_diffusion isPrimaryTopicOf Confusion_and_diffusion.