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A comment on Adding Client-Side Scanning Breaks End-to-End Encryption. Parent comment

Re:Adding Client-Side Scanning Breaks End-to-End Encryption by bonoboTP on Sunday November 03, 2019 @03:06PM (#21436226)
The first is not true. These are robust hashes of the image content, not the exact pixel colors. Look up PhotoDNA for an example.
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Re:Adding Client-Side Scanning Breaks End-to-End Encryption by PostOnce on Sunday November 03, 2019 @11:11PM (#21438982)
"Perceptual hashing" it's sometimes called.
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