Re:Apple enabling client-side CSAM scanning on iPhone tomorrow
by azalemeth on Thursday August 05, 2021 @03:26AM
(#28070864)
But the probability is still not zero, and the number of iPhones in the world is large. A hash collision is possible, however unlikely.
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Re:Apple enabling client-side CSAM scanning on iPhone tomorrow
by zepto on Thursday August 05, 2021 @11:41AM
(#28075283)
The probability of Apple and all its devices winking out of existence due to quantum fluctuations is not zero. ‘Not zero’ is effectively zero if the number is small enough.
Re:Apple enabling client-side CSAM scanning on iPhone tomorrow
by ben_w on Thursday August 05, 2021 @04:21AM
(#28071173)
128 bit hashes are “expect your first collision when each human buys 2305 iPhones, all with one terabyte storage, and then fills them up with photos that are an average of 1MB in file size”
https://en.wikipedia.org/wiki/Birthday_attack
http://www.wolframalpha.com/input/?i=2%5E64%20%2F%20%288e9%2...