XOR
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English
Etymology
Short for exclusive or.
Pronunciation
Noun
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
- 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
Antonyms
- (antonym(s) of “electrical engineering”): XNOR
Translations
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
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
See also
Anagrams
Portuguese
Noun
XOR m (plural XORs)
- Alternative spelling of xor