Is it possible to find $a$ or $b$ given that $a \oplus b = c$ and $c \oplus b = a$ when I only have the value of $b$?
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No. $a\oplus b = c$ and $c\oplus b = a$ are just rearrangements of the same equation, since
$$a\oplus b = c \iff (a\oplus b)\oplus b = c\oplus b\iff a=c\oplus b\,.$$
answered Jan 11 '19 at 11:48
find a or b. I guess the fact that "XOR" is capitalized but "or" isn't suggests that it's not the logical operator.) $\endgroup$ – David Richerby Jan 12 '19 at 14:23