855results about How to "Increase the difficulty of cracking" patented technology

A data encryption and decryption method and an apparatus thereof, and a communication system are disclosed. The data encryption method comprises the following steps of segmenting data to be encrypted and generating a segmented data; aiming at the data to be encrypted, randomly selecting an encryption algorithm; randomly generating a secret key corresponding to the encryption algorithm; using the encryption algorithm and the secret key to encrypt the data to be encrypted so as to acquire the encrypted segmented data; packing the encrypted segmented data to acquire an encrypted segmented data block; and combining and packing the encrypted segmented data block to acquire a final cryptograph. By using the encryption method, cracking difficulty is increased and safety of the data encryption method is increased.

The invention is suitable for the field of touch technology, and provides a unlocking method, a system and a touch terminal for touch terminal interfaces. The method comprises the following steps: receiving a rotary operation command of a three-dimensional graph displayed on a standby unlocking interface; controlling the three-dimensional graph to perform rotary operation in corresponding angle according to the rotary operation command; receiving the position clicked by a user on the three-dimensional graph; and judging whether the position clicked on the three-dimensional graph conforms to the preset unlocking strategy or not, if so, the interface is unlocked. In the scheme for unlocking the multi-dimensional visual space interface in a single-face touch screen, the invention provides brand new operation experience and the unlocking scheme for multi-dimensional visual space interface for users, and the password setting is improved to a brand new breaking difficulty.

The invention provides a reliable encryption transmission system of a quantum cryptography network. The reliable encryption transmission system comprises an encryption processing module and a decryption processing module, the encryption processing module is composed of an encryption strategy unit, a service data buffering shunt unit, a classic encryption unit and a quantum encryption unit, and the decryption processing module is composed of a cryptograph classification unit, a cryptograph data buffering unit, a classic decryption unit and a quantum decryption unit. Meanwhile, the invention further provides a reliable encryption transmission method of the quantum cryptography network. The classic encryption mode and the quantum one-time pad encryption mode are adopted for transmitting service data in a shunt mode, the shunt proportion of the service data can be timely and correspondingly changed according to changes of the quantum secret key supply-demand relationship, on the basis that the safety is guaranteed, the continuity of service data encryption transmission is improved, and the reliability of service data encryption transmission is improved. Meanwhile, the consumption of quantum secret key data is reduced, quantum secret key generation loads of the quantum cryptography network are reduced, and the cost of service data encryption transmission of the quantum cryptography network is reduced.

The invention discloses data encryption, decryption and transmission methods and systems. The data encryption method comprises the steps of: obtaining original data, and generating a random character string; utilizing a preset data mixing rule, mixing the random character string to the original data, and obtaining mixed data; and utilizing a preset encryption algorithm to encrypt the mixed data, obtaining encrypted data, and sending the encrypted data to a receiving end. According to the invention, for either a symmetric encryption mode or an asymmetric encryption mode, dual insurance by the random character string and an encryption key exists, and even if the same secret key is used to encrypt the same original data, different encrypted data is obtained because of the adding of the random character string, so that the decryption difficulty of the encrypted data is enhanced, and the safety of the encrypted data is further improved.

The invention discloses a method for realizing locking of a user number by a wireless terminal device, an unlocking method and a device. The method for realizing the locking of the user number by the wireless terminal device comprises the following steps: reading IMEI of the wireless terminal device and the current user number which is stored in an inserted SIM card and pre-distributed to the wireless terminal device; calculating a first mapped value between the IMEI and the user number; reading IMSI of the SIM card, and calculating a second mapped value between the user number and the IMSI; comparing the calculated first mapped value and the second mapped value, the mapped value between the IMEI pre-stored by the wireless terminal device and the user number and the mapped value between the IMSI and the user number; and when the comparison results are consistent, permitting the wireless terminal device to be used. The invention establishes a binding relation between the wireless terminal device and the user number, has high safety, and is simple and convenient to use.

The invention provides an encrypted storage method and an encrypted storage device. The method comprises the steps of calculating the salted Hash value of a plaintext password, combining the salted Hash value and a corresponding random salt value according to a preset rule to get a ciphertext password corresponding to the plaintext password, and storing the ciphertext password. Through the technical scheme of the invention, the difficulty in ciphertext password cracking is improved, and the safety of user accounts is guaranteed.

The invention relates to a protecting method and a running method and device and system for an Android platform application program. The protecting method comprises the steps of obtaining an application program needing to be protected; performing segment handling on the application program and generating two or more code segments; performing segment encryption processing on one or random more of the two or more code segments; constructing a shell procedure; according to the shell procedure, performing shell adding processing on the two or more code segments having undergone segment encryption processing, and performing shell encryption processing on the protected application program generated after the shell adding processing. According to the technical scheme, the solving difficulty of the application program is increased, and protecting strength of the application program is further improved.

The invention relates to the technical field of encryption, in particular to a file encryption method which comprises the steps that a target storing mode of a packed file to be encrypted is determined according to an instruction; if the determined target storing mode of the packed file to be encrypted is a local basic storing mode, the feature information of the packed file to be encrypted is determined; the packed file to be encrypted is cut according to the feature information to form file blocks; the sequence of the file blocks is disorganized, then the file blocks form an out-of-order file; the out-of-order file is packed and packaged to form a packaged file. According to the file encryption method, obtaining the packed file to be encrypted in the packaged file is complex, the difficult of the process of obtaining file content in the packaged file is increased, and accordingly safety and reliability of encryption of the encrypted packaged file can be improved.

The invention discloses a confrontation method for laser active jamming. A laser locating and tracking system comprises an emitter and a receiver; the method comprises the following steps: the emitter encodes laser detecting signals according to the finite random cycle encoding mode, so that intervals of all laser detecting pulses in one encoding cycle are changed randomly; the emitter introduces the random phase shift Delta i on the all laser detecting pulses, so that the laser detecting pulses have variable phase differences, wherein one random phase shift value is distributed to each laser detecting pulse from the random phase shift sequence; any random phase shift value in the random phase shift sequence is greater than or equal to the time resolution of the receiver, and is smaller than the predetermined minimum period t0 of interference pulses. The confrontation method and system for the laser active jamming of the laser locating and tracking system, disclosed by the embodiment of the invention, both have excellent confrontation effect on the present common three laser active jamming modes and complex jamming modes thereof.

The invention discloses a shared bike electronic lock system and an unlocking method thereof. The electronic lock system comprises an electronic lock module, a mobile phone supporting near-field communication and an authentication server. The electronic lock module is an electronic lock supporting the near-field communication and the mobile communication modes and having a cipher algorithm. The mobile phone supporting the near-field communication is a smart phone with the near-field communication technology. The authentication server comprises a cipher algorithm analysis system and a vehicle identification code database. According to the invention, by use of the near-field communication technology, encrypted message interaction between the electronic lock and the authentication server is improved; user experience is improved; and information safety is ensured.

The invention discloses a code obfuscation method and a code running method and device. The method comprises the steps that an object name to be called is acquired through preset static replacement operation, wherein the static replacement operation is a function configured in a first target file of a target application in advance, and the first target file is used for recording installation information of the target application; whether the object name to be called is contained in a preset obfuscation table is judged, wherein the obfuscation table is generated according to the first target file and a second target file and used for indicating the corresponding relation between the object name and an obfuscation name, and the second target file is used for recording declaration information of the target application; and if the object name to be called is contained in the obfuscation table, the obfuscation name corresponding to the object name to be called is searched for in the obfuscation table and output. Through the method, the technical problem that in the prior art, the obfuscation rate of Java layer codes of an application is low is solved.

Embodiments of the invention disclose an authority check method and device for video playing. The method comprises the following steps of receiving an LUA script file sent by a server; generating check information of a client of a to-be-requested video stream address; executing the LUA script file, encrypting check information according to the LUA script file and generating a client request check code; sending a video stream address request message to the server, wherein the video stream address request message carries the client request check code and the check information, so that the server adopts a corresponding encryption algorithm to encrypt the check information in order to generate a server check code, and if the server check code is consistent to the client request check code, the server returns the requested video stream address; and receiving the video stream address. According to the method and the device, authentication and verification of the video stream address can be effectively realized, the safety of a live video process is improved and the user experience is improved.

The invention belongs to the technical field of information security in communication transmission, and particularly relates to a DNA encryption system and an encryption method. The system comprises an encryption key, an information conversion portion, an information encryption portion, an information transmission portion, a decryption key and an information decryption portion, wherein the encryption key and the decryption key are primer sequences; and information encryption refers to that information is converted and coded and then corresponds to A, T, C, G bases in DNA in a one-to-one mode according to a predetermined rule. The encryption system and the encryption method provided by the invention can realize automatic operation of corresponding code conversion, encryption and decryption by depending on biological problem setting and biological technology development and by being matched with development of corresponding computer information technologies at the same time, have the characteristics of good compatibility with other encryption methods, high automation degree, simple key, high password cracking difficulty, safer information transmission and the like, has good application values, and can provide better reference for other new encryption systems at the same time.

The embodiment of the invention discloses an identity authentication method, an identity authentication device and an identity authentication system. According to the embodiment, the identity authentication method comprises the steps of when the identity authentication request of a user is received, generating authentication information and candidate information based on an identity authentication request; displaying the candidate information at a random position of a preset input graphical interface; displaying the authentication information in a preset authentication interface, wherein the authentication information and the candidate information have a preset corresponding relationship; then obtaining the candidate information selected by the user from the preset input graphical interface so as to obtain an input message; matching the input information with the authentication information; if the input information matches with the authentication information, determining that the identity authentication is successful; otherwise, if the input information does not match with the authentication information, refusing the identity authentication request. The scheme can improve safety.

The invention discloses a method and device for improving terminal self-flashing safety through ciphertext handshaking. The method includes the steps that A, a terminal is connected with a flashing tool so as to enter a downloading preparation mode, feature information of the terminal and feature information of the flashing tool are respectively encrypted through secret keys randomly generated, and therefore a terminal ciphertext and a tool ciphertext are generated; the terminal and the flashing tool interact, the terminal ciphertext and the tool ciphertext are analyzed, and therefore legality and matching performance of the terminal and the flashing tool are verified; B, after it is verified that the terminal and the flashing tool are legally matched, a downloading channel is started by the terminal and the flashing tool for downloading and flashing. According to the method and device, after it is verified that the terminal and the flashing tool are legal, the terminal and the flashing tool are controlled to start the downloading channel to conduct downloading and flashing; due to the fact that the secret keys used for encryption each time are generated randomly, the deciphering difficulty is greatly increased, and the ciphertexts can be prevented from being deciphered; meanwhile, downloading and flashing can be conducted only after the terminal and the flashing tool are legally matched, so that safety is improved.

The invention is suitable for the field of information safety and provides a method for protecting digital contents. The method comprises the following steps: a core processor of terminal equipment generates a digital signature, encrypts the digital signature and transmits the encrypted digital signature to an SP (Service Processor); the SP decrypts the digital signature, generates an SP random number, constitutes a key with an equipment identification number, a local random number and the SP random number, encrypts digital contents, and adds an encrypted information field comprising an encryption identifier and a key determining algorithm to the engaged head part of the digital contents; the SP separately transmits the digital contents to which the encrypted information field is added and the SP random number to the terminal equipment; and the core processor of the mobile equipment locally searches for a key combination which can be used for decrypting the encrypted digital contents according to the key determining algorithm, and decrypts the encrypted digital contents by adopting the key combination. According to the method and the system, the cracking difficulty of encrypted digital contents can be improved, the security of the digital contents is improved, and the aim of protecting the digital contents is fulfilled.

The invention discloses a pirate edition resisting method of coded register software, which comprises the following steps: making user end code to generate sequence code with implicit applying software and computer hardware information at the first time; regarding the sequence code as user's mark code to apply for credit to use register code; coding the legal user to generate a new sequence code through credit end; analyzing the implicit limit information of software and user mark code into the information of applying software and computer hardware; feedbacking the information as register code to the user end; using software user end to store the register code to analyze and detect the register code during operating stage; affirming whether the software is stopped. The invention adopts key character list to group, rearrange and repair to code the random number, which increases the decoding difficulty of code to prevent software edition from embezzling.

The invention discloses an information encrypted/decrypted transmission communication system and method based on group type quantum secret key cards. The communication system comprises a quantum network service station configured in the network side and two clients configured in the user side, each client is provided with the quantum secret key card, each quantum secret key card stores a public key and a private key, all the quantum secret key cards and one quantum network service station share the public key, each quantum secret key card and one corresponding quantum network service station share secret key; when the two clients make communication, the clients obtains a session secret key directly or indirectly via the quantum network service station by using the public and private keys in the matched quantum secret key cards; and then, the clients encrypt and decrypt information via the session secret key in the corresponding quantum secret key card for transmission. The burden in the network side is reduced, and the safety is improved.

The embodiment of the invention provides a data encryption method, the method is applied to a first terminal, and the method comprises the steps: determining a to-be-encrypted file selected by a userof the first terminal and a selected target user under the condition that a first intelligent password key is detected to be inserted into the first terminal; calculating the file content of the to-be-encrypted file according to an SM3 algorithm to obtain an abstract of the file content of the to-be-encrypted file; signing the abstract according to a signature private key of a user of the first terminal stored in the first intelligent password key to obtain a signature abstract; taking a true random number generated by the first intelligent password key as a session key, and encrypting the session key according to the target encryption public key and an SM2 algorithm to obtain a session key ciphertext; encrypting the file content of the to-be-encrypted file according to the session key andan SM4 algorithm to obtain ciphertext content; therefore, the security of the encrypted data is improved.