Efficient federal data correlation calculation method based on hybrid encryption

• Main Authors: PENG YANXIONG, TAN YANG
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to an efficient federal data correlation calculation method based on hybrid encryption. The method comprises the following steps: generating tensors x and y for point multiplication operation from respective characteristic data; the method comprises the following steps: A, locally generating a Paillier encrypted public key PK and a Paillier encrypted private key SK; a step that the A sends Encpk (k) and nonce to the B; the participant A generates a key stream ks through k and nonce, and then uses ks to carry out mask processing on x to generate Maskk, nonce (x); after generation, A sends the information to B; b, through the nonce, Maskk, nonce (x) and Encpk (k) sent by the step A, calculating to obtain a ciphertext Encpk (x) after the tensor x is encrypted; b, the dot product EncDot (x, y) = Dot (Encpk (x)) of y and Encpk (x) is calculated through Paillier ciphertext calculation, and the dot product EncDot (x, y) = Dot (Encpk (x), y) is calculated; the EncDot (x, y) is sent to the step A