Exclusive-OR

Exclusive-OR definition in Computer Security terms:

Acronym(s): XOR

Definition(s): The bit-by-bit modulo 2 addition of binary vectors of equal length.
Source(s): NIST SP 800-20
NIST SP 800-67 Rev. 1

A mathematical operation; the symbol ?, defined as:
0 ? 0 = 0 1 ? 0 = 1
0 ? 1 = 1 1 ? 1 = 0
Equivalent to binary addition without carry.
Source(s): NIST SP 800-90A Rev. 1

The bitwise addition, modulo 2, of two bit strings of equal length.
Source(s): NIST SP 800-38A
NIST SP 800-38B
NIST SP 800-38C
NIST SP 800-38D
NIST SP 800-38F

Synonym(s): Exclusive-OR
The bit-by-bit modulo 2 addition of binary vectors of equal length.
Source(s): NIST SP 800-20 NIST SP 800-67 Rev. 1 A mathematical operation; the symbol ?, defined as:
0 ? 0 = 0 1 ? 0 = 1
0 ? 1 = 1 1 ? 1 = 0
Equivalent to binary addition without carry.
Source(s): NIST SP 800-90A Rev. 1 The bitwise addition, modulo 2, of two bit strings of equal length.
Source(s): NIST SP 800-38A NIST SP 800-38B NIST SP 800-38C NIST SP 800-38D NIST SP 800-38F

 

reference: CSRC Glossary