PRIVACY-PRESERVING IMAGE DISTRIBUTION Russian patent published in 2024 - IPC G06F21/60 G06F21/62 G06T7/11 

FIELD: physics.

SUBSTANCE: invention relates to a method, a system and a computer-readable data medium for distributing personalized images which preserve privacy to a plurality of users. Method comprises using a hardware processor of a privacy management server for: in response to reception of the encrypted initial image, decrypted using the administration key, performing segmentation of the initial image of the encrypted domain to obtain a plurality of user-specific encrypted private images, wherein: selected private image comprises a source image region selected to display a private element of a selected user from a plurality of users, and the other private image contains another area of the original image selected for displaying the private item of another user from the plurality of users; in response to image segmentation, performing the encrypted domain key modification procedure to obtain a plurality of user-specific re-encrypted images, wherein: selected re-encrypted image contains the result of conversion of the selected private image from decrypted using the administration key to the decrypted using the private key of the selected user, and the other re-encrypted image contains the result of converting another private image from the decrypted using the administration key to the decrypted using the private key of the other user; and transmitting a plurality of user-specific re-encrypted images to an image distribution server for further distribution to client devices configured to recover the user-specific plaintext versions of the original image.

EFFECT: possibility of distributing data to multiple users with preservation of privacy of corresponding users.

21 cl, 20 dwg