Verfahren zur Verarbeitung eines Verschlüsselten Digitalen Inhalts mit einem Entscheidungsbaum

Details

Veröffentlichungs-Nr.

EP4749975

Anmeldetag

22. November 2024

Veröffentlichung

27. Mai 2026

Rechtsraum

EP

IPC

H04L9/00

Abstract

It is disclosed a method for processing a digital content with a decision tree, comprising: -transmitting a ciphertext to a server; -obtaining, from the server, a processed ciphertext function of an encryption of a difference between a third vector equal to a multiplication of the plaintext and a first matrix, and a first vector; -decrypting the processed ciphertext; -setting elements of the processed plaintext selectively to 1 or 0; -encrypting the processed plaintext; -transmitting the resulting second ciphertext to the server; -obtaining, from the server, a second processed ciphertext function of an encryption of a difference between a fourth vector equal to a multiplication of the processed plaintext and a second matrix, and a second vector; -decrypting the second processed ciphertext; -setting elements of the resulting second plaintext selectively to 0 or 1 ; -determining an outcome of the decision tree based on the second plaintext.

Anmelder

Firma

Orange

Land

🇫🇷 Frankreich