XOR
English edit
Etymology edit
Short for exclusive or.
Pronunciation edit
Noun edit
XOR (plural XORs)
Input | Output | |
---|---|---|
A | B | |
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 1 |
1 | 1 | 0 |
- (logic) The connective "exclusive or".
- The XOR of (0,0) is 0; (0,1) is 1; (1,0) is 1; and (1,1) is 0.
- (electrical engineering) A logic gate that implements "exclusive or".
- (programming) The symbolic representation that implements "exclusive or".
- XOR can be used to add bits without carrying.
Usage notes edit
- Boolean variables and states (AND, OR, NOT, TRUE, FALSE etc.) are commonly written in all uppercase in order to distinguish them from the ordinary uses of the words.
Synonyms edit
Antonyms edit
- (antonym(s) of “electrical engineering”): XNOR
Translations edit
logic: connective
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electrical engineering: logic gate
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- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
Verb edit
XOR (third-person singular simple present XORs, present participle XORing, simple past and past participle XORed)
- (transitive, computing) To perform the XOR function upon.
- 1989, IEEE Communications Society, Conference Record:
- The XORed sequence has the same period as the sequence that is not XORed.
- 1998, Stafford Tavares, Henk Meijer, Selected Areas in Cryptography:
- XORing different constants into the four s-boxes in such a cipher has exactly the same effect as XORing a single constant into each round function output.
- 2007, Reinhard Wobst, “Life After DES: New Methods, New Attacks”, in Angelika Shafir, transl., Cryptology Unlocked, John Wiley & Sons, Ltd, →ISBN, section 3 (IDEA: A Special-Class Algoritmh), subsection 5 (Cryptanalyzing IDEA), page 239:
- There are weak keys in the sense that their use by foisting chosen plaintexts can be proved, which could be interesting for chip cards with a ‘burnt-in key’. First of all, however, these keys can be easily avoided—one only needs to XOR all subkeys with the hexadecimal number 0x0dae—and second, the probability that such a key can be caught is 2−96; that is about one out of 1029 randomly selected keys (this number even has a name: 100 quadrilliards).
Synonyms edit
See also edit
Anagrams edit
Portuguese edit
Noun edit
XOR m (plural XORs)
- Alternative spelling of xor