LEX (cipher) - définition. Qu'est-ce que LEX (cipher)
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Qu'est-ce (qui) est LEX (cipher) - définition


LEX (cipher)         
LEX is a stream cipher based on the round transformation of AES. LEX provides the same key agility and short message block performance as AES while handling longer messages faster than AES.
XOR cipher         
ENCRYPTION BY SIMPLE EXCLUSIVE-OR LOGIC OPERATIONS
Simple XOR Cipher; Simple XOR cipher; XOR encryption; Xor encryption; Xor cipher
In cryptography, the simple XOR cipher is a type of additive cipher, an encryption algorithm that operates according to the principles:
Caesar cipher         
  • The Caesar cipher is named for [[Julius Caesar]], who used an alphabet where decrypting would shift three letters to the left.
  • A construction of two rotating disks with a Caesar cipher can be used to encrypt or decrypt the code.
  • The distribution of letters in a typical sample of English language text has a distinctive and predictable shape. A Caesar shift "rotates" this distribution, and it is possible to determine the shift by examining the resultant frequency graph.
SIMPLE AND WIDELY KNOWN ENCRYPTION TECHNIQUE
Shift cipher; Caesar shift cipher; Caesar cypher; Caeser cipher; ROT3; Caesar shift; Caesarean cipher; Caesar Cipher; Rotation cipher; Caesar-shift substitution cipher; Caesar encryption; Caesar’s cipher; Caesar Code; Caesar code; Caesar's cipher; Caesar's code; Caesar's Cipher; Caesar Shift; Caesarian cipher; Ceaserian cipher; Ceasarian cipher; Ceserian cipher; Cesarian cipher; Caesar's method; Caesar method; Shift cypher; Ceasar cypher; Ceasar Cipher
In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.

Wikipédia

LEX (cipher)

LEX is a stream cipher based on the round transformation of AES. LEX provides the same key agility and short message block performance as AES while handling longer messages faster than AES. In addition, it has the same hardware and software flexibility as AES, and hardware implementations of LEX can share resources with AES implementations.

Designed by Alex Biryukov, LEX is a Phase 2 Focus candidate for the eSTREAM project. It is not patented.

A new revision of LEX protects against a slide attack found in an earlier version.