8results about How to "Prevent eavesdropping" patented technology

The invention belongs to the field of image communication, and particularly relates to a streaming media hardware acceleration transmission system based on a credit creation server, which comprises a hardware part and a software part, and is characterized in that the hardware part comprises a basic platform which adopts a domestic credit creation server as a hardware basis to ensure the autonomous controllability and safety of the system; in the encryption acceleration step, a data acceleration card is deployed, hardware acceleration is carried out aiming at a national cryptographic encryption algorithm, and the acceleration card processes computation-intensive tasks such as encryption and decryption so as to reduce the burden of a CPU (Central Processing Unit); in the software application step, streaming media processing software and encryption and decryption application software are operated on a credential server to ensure that data processing and storage are carried out on an autonomous and controllable platform; the software part comprises an application layer and an adaptation layer, the application layer comprises a streaming media server and CDN software, and the adaptation layer is divided into static adaptation and dynamic adaptation. According to the system and the method, the safety, the speed and the efficiency of streaming media transmission are remarkably improved, the CPU processing burden is reduced, and the overall performance and the reliability of the system are enhanced.

A chaotic encryption module is characterized in that a light source output by a first continuous wave laser (CW) is modulated by a parallel quadrature modulator (IQM), so that a signal output by an arbitrary waveform generator (AWG) is converted and transmitted, and pseudo-random interleaving coding of the signal is realized; a transmitted signal is loaded to a chaos carrier through a first optical coupler FC to realize chaos hiding, then the chaos optical carrier predicted in advance by a storage pool is utilized in a chaos decryption module through an information transmission module, and the chaos optical carrier is modulated to a continuous optical carrier output by a second continuous wave laser CW through a Mach-Zehnder modulator MZM. And the 90-degree frequency mixer carries out decryption so as to preliminarily recover an original transmission signal. And finally, the obtained signal is processed by a local oscillator (LO) and a coherent receiver, and digital information processing (DSP) is carried out to realize compensation, recovery and decryption of the digital signal, so that chaotic secrecy coherent optical communication is realized.

The invention discloses a quantum secure direct communication method based on a one-time pad mode, which belongs to the technical field of quantum communication, and comprises the following steps: Bob prepares a batch of coherent states and sends the coherent states to Alice through a quantum channel, the Alice divides the received coherent states into two groups, performs homodyne detection on one group and sends a detection result to Bob, and the Bob sends the detection result to the Alice; the Bob performs security detection according to the first effective information amount; the Alice encodes the coherent states according to the secret information and sends the encoded coherent states to the Bob, the Bob randomly selects one coherent state to execute homodyne detection and sends a result to the Alice, and the Alice performs security detection according to the second effective information amount; bob performs homodyne detection on other coherent states, calculates a threshold value, and demodulates the threshold value to obtain secret information; the continuous variable quantum state is adopted, generation and detection are easy, loss is small in the transmission process, safety is high, and compatibility with the standard telecommunication technology can be achieved.

The invention provides a robust secure transmission and identification method for anti-distillation based on multi-teacher comparison, and belongs to the technical field of radio signal automatic modulation and identification. The sending end performs key-driven disturbance filtering processing on the wireless signal to be transmitted based on the shared key, generates an encrypted signal and transmits the encrypted signal; the receiving end performs inverse disturbance reconstruction on the received encrypted signal based on the shared key to obtain a decrypted signal; constructing a multi-teacher distillation system, wherein the multi-teacher distillation system comprises a plurality of teacher models and a student model; performing combined distillation training on the student model based on the output of the teacher model and the student model and the middle layer characteristics; the combined distillation training comprises output distillation and characteristic comparison distillation; and dynamically weighting a plurality of loss items generated in the multi-teacher distillation process through an adaptive loss weight adjustment mechanism based on meta-learning to obtain a modulation identification result. The identification rate of illegal receivers is effectively reduced, and the performance of legal receiving ends under interference is improved.

The application discloses a kind of based on unified port's SIP and RTP tunnel encryption forwarding method and system.The method is cooperated by tunnel client deployed in client side and tunnel server side of server side, including: based on unified port, establishing encrypted communication tunnel between the two;Tunnel client receives SIP signaling, modifies media connection information in it, and then sends to server side through tunnel encryption, and is forwarded to SIP server by server side;Tunnel client receives RTP media stream, and then sends to server side through tunnel encryption after additional header containing forwarding destination information is encapsulated, and is forwarded to SIP server according to header information by server side.The application tunnels and encrypts transmission of SIP signaling and RTP media stream through single port, effectively avoids network protocol ban, greatly simplifies firewall configuration, significantly improves NAT penetration success rate and communication security.

The invention discloses a remote diagnosis method based on a trusted module, and aims to improve the safety of remote connection, the method relates to terminal equipment, a server and a remote debugging host, the terminal equipment is provided with the trusted module, and a white list and a VPN group are preset in the server; the terminal equipment sends an equipment activation request to the server; the server verifies whether the terminal device is in a white list after receiving the device activation request; if verification is not passed, an illegal request is replied, and remote diagnosis cannot be carried out on the terminal equipment; if the verification is passed, VPN connection configuration information is sent to the terminal equipment; the terminal equipment encrypts and stores the VPN connection configuration information by using the trusted module, and the terminal equipment analyzes the VPN connection configuration information and loads the VPN connection configuration information in a memory; the server sends a VPN client starting command to the terminal equipment, the terminal equipment starts the VPN client, and the VPN client and the server establish a secure tunnel; belongs to the technical field of remote connection.

The embodiment of the invention provides a mobile terminal data anti-leakage method and device based on quantum security, and the method comprises the steps: encrypting a data request through a built-in quantum security shield of a mobile terminal, and transmitting the encrypted data request to a management and control data platform, the management and control data platform decrypts the encrypted data request through the quantum security shield, receives encrypted response data issued by the management and control data platform, processes the decrypted data request to generate response data, encrypts the response data through the quantum security shield to obtain encrypted response data, and sends the encrypted response data to the management and control data platform; the response data encrypted by the platform is decrypted through the quantum security shield to obtain the response data, so that attack and eavesdropping of an unauthorized third party are avoided in the data transmission process of the mobile terminal, and the security and integrity of the data in the transmission process are ensured.

The invention discloses an intelligent logistics authorization cloud-assisted PSI-CA method supporting a block chain and electronic equipment. The method comprises the following steps: outputting a public parameter by a BC; an accounting node of the BC outputs parameters required by each participant, and the DO, the C1 and the C2 set respective signature keys and publish public keys; the DU submits vouchers alpha and beta to a system consensus node for registration, generates a signature verification key pair and issues a public key; the DO and the DU respectively select random numbers as blind factors, generate confusion ciphertexts A, A ', T and Q, sign the confusion ciphertexts A, A', T and Q, package data according to classes, and respectively send the data to C1 and C2; c1 and C2 take the packed data of the DO and the DU and the public keys of the corresponding users as input and output Boolean values; when all the results are 1, the C1 and the C2 generate confusion ciphertexts U and W; c1 and C2 carry out authorization verification on the DU, after verification is passed, confused ciphertexts U and W are sent to the DU, and the DU verifies the data after receiving the data; and after all verification is passed, the DU performs statistical information analysis based on the received data. According to the method, the security of the user data can be improved.