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Any local match causes a “safety voucher” to be uploaded along with the encrypted image. The voucher contains a (fragment of a) decryption key. If that fragment
by Hackbraten 5y ago
Any local match causes a “safety voucher” to be uploaded along with the encrypted image. The voucher contains a (fragment of a) decryption key. If that fragment is combined with enough of its buddies from other vouchers, Apple gets to decrypt the image.
- simondotau 5y agoMore precisely, once they have sufficient vouchers, Apple gets to decrypt the contents of the safety vouchers, which contains a low resolution, grayscale copy of the original image. Safety vouchers don't give Apple access to your photo library.