228results about How to "Improve security strength" patented technology

The invention discloses an identity authentication method based on biological feature encryption and a homomorphic algorithm. The method is quicker than a normal password method by using biological features of users as passwords to log in a system through a mobile device, using an encrypted biological template is safer, and privacy of the users can be guaranteed as information is transmitted in a ciphertext form. By adding factors such as timestamps, tri-party authentication among the users, a provider server and a cloud computing server is realized, and reliability among the three parties is enhanced. Legal users can be prevented from using resources in the cloud computing environment illegally to better manage the resources by means of user authentication operation according to attribution predicate encryption and real-time updating of permission information. Operation without encryption can be realized by the aid of the homomorphic algorithm, same effects as decrypting before operation can be achieved, time and space expenses can be saved, system efficiency is greatly improved, and the identity authentication method has high safety and efficiency.

A semiconductor memory includes a memory control section and a memory core section. A command judgment circuit in the memory control section changes the operating mode of the semiconductor memory in response to a command sent from a controller of an information processing apparatus. In a first mode, a decryption process is performed in a command decryption circuit, and data outputted from the memory core section is not scrambled. In a second mode, the decryption process is not performed in the command decryption circuit, and the command outputted from the memory core section is scrambled.

The invention discloses a metering data transmission system based on identity encryption, which comprises a host station, a metering terminal and an intelligent electric energy meter, wherein the intelligent electric energy meter encrypts metering data by adopting a working key and sends the metering data to the metering terminal; the metering terminal performs decryption by adopting the working key of the intelligent electric energy meter, then encrypts the metering data to form a ciphertext by using a public key of the metering terminal, generates a signature for the ciphertext, and sends the metering data and ciphertext information to the host station together; the host station verifies the signature by using the public key of the metering terminal, a private key of the metering terminal is generated after the signature is authenticated, and decryption for ciphertext information is performed so as to obtain an information plaintext; the host station generates a control command according to data processing results and encrypts the control command by adopting system sharing parameters and the public key of the metering terminal so as to generate the ciphertext, the ciphertext is sent to the metering terminal after the signature is generated, the metering terminal verifies the signature and the signature is authenticated, and the control command aiming at the intelligent electric energy meter is generated after the private key is adopted to decode the ciphertext and the control command is read; and in addition, the control command aiming at the intelligent electric energy meter is encrypted through the working key of the intelligent electric energy meter and then is sent to the intelligent electric energy meter. The metering data transmission system improves the security for data transmission, and reduces the calculating load of the host station.

The present invention relates to software copyright protecting method, and is especially software copyright protecting method by extracting partial codes from program file to the enciphering device. The compiled program file has its codes decomposed into partial codes running in the enciphering device and the other in the computer, and this makes it possible for the software developer to raise the enciphering safety degree without increasing load in developing software protecting functional module. The software copyright protecting method is superior to traditional shell enciphering method.

The invention discloses a method based on PCI-E interface full algorithm cryptographic card, including: a cryptographic algorithm module, a FLASH memory, a PCI-E bus interface, a random numb generator, and an FPGA master control chip with NIOS soft core processor, wherein a PCI-E IP core and an algorithm state machine are integrated in the FPGA master control chip. The cryptographic algorithm module comprises a symmetric key encryption SM4 algorithm chip, a symmetric key encryption SM1 algorithm chip and an asymmetric key encryption SM2 algorithm chip. The invention also discloses an encryption method of the cipher card. The invention provides a high-performance full-algorithm cryptographic card, which simultaneously reduces the complexity of hardware circuit and energy consumption, improves the key operation speed, and the cryptographic card adopts a home-made cryptographic algorithm, so that the user's key is most securely protected.

The invention belongs to the technical field of Internet of Vehicles, and discloses a motorcade safety management system and method based on ring signatures, and a vehicle management platform. identity-based ring signatures are performed on the identities of motorcade members on the basis of an elliptic curve. Hiding and public key updating are conducted on identities of motorcade members throughthe elliptic curve, the block chain and the ring signatures, the identities of the message senders are authenticated, and session keys are updated; the block chain is utilized to publish a public keycertificate and a reputation value of the vehicle; The vehicle inquires the public key, the public key validity and the current reputation value of the surrounding vehicles through the roadside unit,so that the addition of malicious vehicles is avoided; Updating of the public key can prevent information from being intercepted and tampered by malicious vehicles when the private key of the user issubjected to security threats. The privacy of registered users and the privacy of motorcade members are effectively prevented from being leaked, and the communication safety of the members in the motorcade is ensured.

A wireless network (2, 150) for monitoring a patient includes a body sensor network (22, 24, 26, 172, 174, 176) that includes one or more wireless sensors (6, 8, 10, 12, 14, 16, 18, 20, 156, 158, 160, 162, 164, 166, 168, 170) operatively connected to the patient that collect and transfer information related to the patient's health to the wireless network (2, 150). A set-up server (4, 154) configures the one or more wireless sensors (6, 8, 10, 12, 14, 16, 18, 20, 156, 158, 160, 162, 164, 166, 168, 170) with keying material before the one or more sensors (6, 8, 10, 12, 14, 16, 18, 20, 156, 158, 160, 162, 164, 166, 168, 170) are deployed to the wireless network (2, 150). A base station (178, 180) distributes a key certificate to the one or more sensors (6, 8, 10, 12, 14, 16, 18, 20, 156, 158, 160, 162, 164, 166, 168, 170) associated with the body sensor network (22, 24, 26, 172, 174, 176), such that two sensors generate a unique pairwise key based at least in part upon the pre-distributed keying material and the key certificate distributed by the base station (178, 180).

An electronic storage apparatus comprises a biometrics information inputting section, a collation section for comparing and collating collation biometrics characteristic information and reference biometrics characteristic information with each other, an authentication result retention section for retaining, where it is recognized that the collation biometrics characteristic information is that of an owner, the result of the authentication, a secret information outputting section capable of outputting secret information of the owner stored in a secret information storage section to the outside, and an authentication result deletion section for deleting, when an unused state detection section detect that the secret information outputting section is in an unused state, the result of authentication retained by the authentication result retention section, whereby the security strength of a card type storage medium is raised and the electronic storage apparatus can be used more easily by a user.

This invention relates to a method for setting up sequence ciphers and a device, the main content is how to generate the cryptographic key sequence including the following steps: appointing a large enough root cryptographic key space to select seeds secretly and appointing steps to determine the current root cryptographic key as the new seed value. A single-way hash transformation is carried out to the current root cryptographic key to get the current frame cryptographic key, the process of generating said key is repeated to get the necessary key sequence and further enhance the randomness of said generated key sequence.