Abstract: A satellite in-orbit secure anomaly detection method for offshore wind farms, includes: a trusted authority center sets the basic security parameters of the system, and initializes the XOR filter; the first type of satellite and the second type of satellite are configured to prepare for subsequent data processing; the first type of satellite receives anomaly data sent by the remote manager of the offshore wind farm and adds it to the XOR filter, using the fingerprint of the XOR filter to generate corresponding elements and sends them to the second type of satellite; an anomaly data intersection phase: the second type of satellite receives real-time data sets from sensors of the offshore wind farm, uses the XOR filter to filter out elements that do not belong to the intersection, and then completes the intersection process of the two sets with the first type of satellite.

Abstract: The present invention provides a foldable recliner, comprising a ground supporting component and unfolding components, wherein the unfolding components are fixedly connected to a backrest, and first guide blind holes and second guide blind holes are formed in the unfolding components; when the backrest is in a sitting posture state, the ground supporting component is inserted into the first guide blind holes, and a height of the ground supporting component is greater than that of the backrest; and when the backrest is in a lying posture state, the ground supporting component is inserted into the second guide blind holes, such that the ground supporting component is in contact with the ground to support the backrest.

Abstract: Embodiments of this disclosure disclose a key management method and a related device, the method including: selecting a random number and a key according to an operation instruction inputted by a user; generating a first encryption ciphertext of the key, according to the random number, the key, a first public key, and a second public key, the first public key being determined according to a point on an elliptic curve and a private key of a hardware security module (HSM), and the second public key being determined according to the point on the elliptic curve and a private key of the client; generating a symmetric key sequence according to the key and a preselected hash function; encrypting data according to the symmetric key sequence to obtain a data ciphertext; and transmitting the first encryption ciphertext and the data ciphertext to a cloud server.

Abstract: Embodiments of this disclosure disclose a key management method and a related device, the method including: selecting a random number and a key according to an operation instruction inputted by a user; generating a first encryption ciphertext of the key, according to the random number, the key, a first public key, and a second public key, the first public key being determined according to a point on an elliptic curve and a private key of a hardware security module (HSM), and the second public key being determined according to the point on the elliptic curve and a private key of the client; generating a symmetric key sequence according to the key and a preselected hash function; encrypting data according to the symmetric key sequence to obtain a data ciphertext; and transmitting the first encryption ciphertext and the data ciphertext to a cloud server.