213results about How to "Improve tamper resistance" patented technology

The invention discloses a user public key address binding, searching and verifying method and system based on the crypto currency open account book technology. The user public key address binding, searching and verifying method is characterized by comprising the following steps that (1) verification public key addresses are published to users in a crypto currency network; (2) an account name registration request of one user is received, and the public key address of the user is received; (3) crypto currency is sent to the public key address of the crypto currency of the registered user through a private key address corresponding to the verification public key address and used as a verification transaction, and it is set that additional information or script content of the verification transaction contains the account number of the user, wherein the amount of the crypto currency is greater than or equal to zero; (4) query requests from other users in the crypto currency network are received, and the public key address of the registered user is fed back according to the query requests. The user public key address binding, searching and verifying method and system can substantially improve the availability, convenience, safety and reliability of crypto currency transactions, and protect the users against economic losses caused by the situation that the public key addresses are tampered with and used illegally.

A tamper-resistant secure label, article and associated method. A label for overlying information comprises an adhesive layer for adhering the label to a substrate. The adhesive layer includes a structural adhesive that ensures that an initial removal precludes re-adhering using the adhesive layer. The label may further include an obscuring layer to selectively block visual access to the information and maintain the confidentiality of the information until the obscuring layer is removed.

A semiconductor device of the present invention includes: at least one of non-volatile memory unit operable to store data; at least one of an arithmetic-logic unit operable to perform an arithmetic-logic operation using data which is stored in the memory unit and data that is inputted from outside; and an output unit operable to output a result of arithmetic-logic operation performed by the arithmetic-logic unit; wherein the memory unit, the arithmetic-logic unit, and the output unit are included in a functional block, and an output line of each of the memory unit is connected only to one of at least one of the arithmetic-logic unit.

A task of the present invention is to provide a container sealing structure capable of easily and surely unsealing a container and hygienically maintaining an opening portion at the time of resealing, and a method of manufacturing the sealing structure. The container sealing structure of the present invention is configured by integrally forming a pouring portion (12) and a cap portion (16). An easily breakable portion (15) is formed in the container sealing structure. The pouring portion (12) and the cap portion (16) includes an intermediate wall (13) which is formed by bending downwardly from an upper end portion of an inner wall (11) and an outer wall (14) which is formed by bending upwardly from a lower end portion of the intermediate wall (13).

The invention discloses a lock cylinder fixed type cross-shaped mechanical antitheft lock matched with a fingerprint lock and relates to the field of antitheft locks. By means of the characteristic that the operation manner that a key can only be inserted and pulled and unlocking can be conducted as long as a handle is rotated of the mechanical antitheft lock is right the same as the operation manner of the fingerprint lock is utilized, the scheme of matched usage of the mechanical antitheft lock and the fingerprint lock is put forwards. A cam mechanism of a special structure and double clutches running independently are mainly adopted so that fingerprint recognition unlocking, key unlocking and locking operation can be completed through the same handle, wherein the cam mechanism is mainly composed of a torque limiter, a driven ring, a cam ring and a stirring wheel in a combined manner, engagement and disengagement of the auxiliary clutch are completed through key inserting and pulling, and the main clutch and the auxiliary clutch are relatively independent and do not interfere with each other; and therefore convenience of the fingerprint lock is maintained in the whole set of lock, and meanwhile the beneficial effects that technical opening, violent opening and damage are prevented, the handle can idle, and a main lock plunger, a spring bolt and a lock body are movably connected in an external hanging manner of the mechanical antitheft lock are achieved.

A circuit board is provided in which tamper resistance is improved by making probing by third parties difficult, while solving problems associated with the current techniques and manufacturing costs. A signal line through which a confidential signal requiring tamper resistance flows and components 32 and 33 connected to the signal line 21 by the terminals thereof, are laid out in a component-containing layer 13 of a circuit board 10. Only a confidential signal having been encrypted through a predetermined component 31 is outputted to an observation point 34 provided on a surface of the circuit board 10. External observation and control of the confidential signal is performed by decoding a cipher provided by the component 31 to the signal which appears at the observation point 34.

A system for increasing a tamper resistance of a digital data processing unit, comprises a first unit (901) comprising processing means (906) for processing the received digital data in dependence on values looked up in at least one look-up table (916) based on values in the received digital data. The system further comprises a second unit (902) comprising means (912) for computing at least one value for inclusion in the digital data causing the first unit (901) to look up at least one predetermined value in the look-up table (916) when processing the digital data. It comprises an inserter (910) for including the at least one value in the digital data, and an output (908) for transmitting the digital data to the first unit.

The invention relates to a peer-to-peer network having at least one first node with a first clock module and part of a peer-to-peer application. Also included is at least one second node with a second clock module and part of the peer-to-peer application. At least one communication connection between the first node and the second node is establishable. The first node comprises at least one first synchronization clock module. The second node comprises at least one second synchronization clock module. At least the first synchronization clock module is configured to transmit at least one first synchronization clock message to the second synchronization clock module via the communication connection, the second synchronization clock module is configured to synchronize the clock signal of the second clock module to the clock signal of the first clock module based on synchronization information included in the first synchronization clock message.

The invention provides an Internet of Vehicles privacy protection trust model based on a block chain. Vehicles on the road generate and broadcast messages through the vehicle-mounted ad hoc network toshare surrounding traffic information so as to improve the traffic efficiency and safety. However, due to the untrusted network environment of the vehicle-mounted ad hoc network, the privacy of the vehicle is easy to expose, and whether the received message is reliable cannot be judged. The message is anonymously sent by the vehicle through the ring signature technology, so that the vehicle is prevented from being tracked by a malicious vehicle. Messages sent by the vehicle are evaluated and screened through a reputation evaluation mechanism based on the block chain technology, and forged information in the messages is filtered. Based on the characteristics of the block chain, it is guaranteed that the vehicle reputation is not maliciously tampered, real-time synchronous updating of the vehicle reputation is achieved, and the safety and usability of the vehicle-mounted ad hoc network are further improved.

A method comprises the steps: receiving to-be-stored data uploaded by a user, collecting storage key information of the to-be-stored data, and uploading the to-be-stored data to an interstellar file system; verifying the to-be-stored data by utilizing the interstellar file system, after the verification is passed, fragmenting the to-be-stored data by the interstellar file system, storing the fragmented to-be-stored data to different nodes, and generating a hash value for each fragment of the to-be-stored data in the interstellar file system; and storing the hash value and the evidence storagekey information in transaction record detail information in the form of a blockchain transaction record based on an intelligent contract, establishing a corresponding mapping relationship between theuser and related data, and respectively storing the transaction record detail information in a blockchain and a database. Through the decentration characteristic of the blockchain, and in combinationwith the distributed storage characteristic and encryption strength of the interstellar file system, higher tamper-proof capability is effectively realized.

The semiconductor device of the present invention includes: first defensive wiring provided above a diffusion isolation layer formed in a substrate or a well, arranged at a minimum wiring pitch allowable in fabrication to cover the diffusion isolation layer; a plurality of signal wiring layers formed above the first defensive wiring; and means for applying a predetermined signal to the first defensive wiring and capturing a change in an electrical or physical property of the first defensive wiring.

The present invention discloses a bus monitor for enhancing SOC system security and a realization method thereof. The bus monitor disposed between a system bus and a system control unit includes a configuration unit, a condition judgment unit, an effective data selection unit, a hardware algorithm unit and a comparative output unit. Without affecting the bus access efficiency, the present invention provides the method capable of immediately monitoring the bus behavior, and the detection system notices whether a particular bus access serial behavior is changed due to an accidental fault or intentional attacking fault. If the particular bus access serial behavior is changed, the present invention warns the system to adopt a suitable security measure to prevent the security hidden trouble and leakage of classified information due to the incorrect system security process.

An electronic device is proposed for accompanying a perishable good during one period to monitor the exposure of the good to an environmental parameter, such as temperature. The device includes a data interface for receiving data representing the exposure of the good to the environmental parameter during an immediately preceding period. It further includes a sensor for measuring the environmental parameter. Also, the device includes a processor for using a relationship specific to the good (such an Arrhenius equation for that good) to compute a characteristic of the good at the end of the one period using the received data and the output of the sensor. The device further includes a memory for recording the output of the sensor. To economise on memory usage, data is stored at a faster rate during periods when the data is of most significant (e.g. it indicates a high temperature). A switch is provided for indicating that data should not be taken into account in the computation, during a short interval, in which for example the device may be being handled.

A cap comprises a cap body fitted and secured to the mouth of a container, an upper closure provided in the cap body, and a ring-like member which covers the outer surface of a skirt portion of the cap body. The ring-like member and the skirt portion are coupled together through breakable bridge portions. These two members are separated away from each other via cut surfaces but are intimately contacted to each other at the cut surfaces. The cap can be easily removed by hand from the mouth of the container, and can be separated from the container at the time of disposal.

The invention discloses a double-insertion type antitheft door and relates to the field of antitheft safety doors. The double-insertion type antitheft door is mainly characterized in that an insertion lug is arranged at the position, corresponding to each doorframe insertion hole, of a doorframe buckled edge, an insertion lug gap is formed between each insertion lug and a doorframe, a double-insertion plate is arranged at the position, closely neighboring a door leaf side edge, inside the door leaf, the double-insertion plate is provided with liner plates in the mode that each liner plate corresponds to the corresponding insertion hole in the doorframe, a narrow-slit type insertion hole is formed between each liner plate and the double-insertion plate, the side edge of a panel inside the door leaf is provided with rectangular insertion holes in the mode that each rectangular insertion hole corresponds to the corresponding narrow-slit type insertion hole, the insertion lugs, the door leaf side edge, the double-insertion plate and the liner plates are each provided with an insertion hole in the mode of corresponding to the doorframe insertion holes, the five insertion holes which are correspondingly formed constitute a group, after the door leaf is closed, the insertion lugs are inserted into the rectangular insertion holes and the narrow-slit type insertion holes, the double-insertion plate is also inserted into the insertion lug gaps, the five insertion holes are all coaxial, lock tongues are inserted into the five concentric insertion holes correspondingly and used for locking the antitheft door, and the double-insertion type antitheft door is resistant to unclenching and damage.

A tamper-evident and/or tamper-resistant electronic module comprising an electronic component embedded in an encapsulant material and at least one thin sheet of frangible material contacting and overlying said encapsulant material and overlying said component, said sheet being sufficiently thin that it is likely to crack or break if an attempt is made to drill or cut through it with a laser drill.

The invention designs an electric energy meter theft prevention sealing structure which solves the technical problem of low productivity because the traditional electric energy meter seal is still manually operated. The electric energy meter theft prevention sealing structure comprises a meter shell and a meter body, wherein the meter shell is provided with a screw hole, and a screw is fixedly connected with the meter body after penetrating through the screw hole. The electric energy meter theft prevention sealing structure is characterized in that a seal cap with an outer folding edge at thelower part is arranged on the screw; a metal ring is sleeved outside the seal cap; the metal ring is abutted against the outer folding edge, and the outer wall is provided with a plurality of buckling pieces which are outwards inclined and opened to the upper part; the buckling pieces are circumferentially arranged; the inner wall of the surface shell arranged at the upper part of the screw hole is provided with an annular projection; and the buckling pieces are positioned at the lower part of the annular projection to form inversed buckling. The invention can visually find out damage traces and replace the damaged electric energy meter in time and has the advantages of good electricity theft prevention effect, high inversed buckling matching strength, good pickproof performance, convenience in processing, simplicity in sealing operation and high productivity.