139 results about "Password cracking" patented technology

To allow flexible security level switching according communication situations, a password holding section holds a plurality of device authentication passwords, for example, a temporary password and a private password. The temporary password is valid only under a certain situation and the private password has a high level of confidentiality to increase the device security. A password management section allows the user to add a new password to the password holding section and delete an existing password therefrom. A password selecting section selects the most suitable password for current connection from among passwords in the password holding section according to a user event, information acquired by an external factor acquisition section, and information from a time control section. The selected password is output to a password checking section.

A method, system and computer program product for automatically displaying the potential risk associated with cracking a password. While creating or modifying a password, feedback is provided describing the risk associated with cracking the password. Risk assessment may be presented as a percentage, accompanied by an explanation of why the value was ascertained. Risk feedback during password creation provides an opportunity to improve computer, document, and file security.

A system for analyzing and modifying passwords in a manner that provides a user with a strong and usable/memorable password. The user would propose a password that has relevance and can be remembered. The invention would evaluate the password to ascertain its strength. The evaluation is based on a probabilistic password cracking system that is trained on sets of revealed passwords and that can generate password guesses in highest probability order. If the user's proposed password is strong enough, the proposed password is accepted. If the user's proposed password is not strong enough, the system will reject it. If the proposed password is rejected, the system modifies the password and suggests one or more stronger passwords. The modified passwords would have limited modifications to the proposed password. Thus, the user has a tested strong and memorable password.

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 provides a weak password verification and cracking method and device; the method and device can realize central management and optimize a weak password dictionary, thus reducing weak password verification time, improving weak password discovering ability, and improving weak password cracking efficiency; the weak password verification method comprises the following steps: obtaining a use equipment UE password; if the obtained password is a cleartext password, determining whether the obtained password as a weak password or not according to a preset weak password definition; if the obtained password is a weak password and the password is not in the preset weak password dictionary, adding the password into the weak password dictionary.

An embodiment of the present invention discloses a method, an apparatus and a system for an access function in network applications. The method includes the steps as follows: receiving a functional access request transmitted by a first client; confirming a target verification mode for verifying the functional access request based on the functional access request; acquiring a kind of verification information as information to be verified, wherein, the verification information corresponds to the target verification mode, and verifying whether the information to be verified and the target verification information are same, if yes, allowing the first client to access the target function by adopting user identity information. According the technical scheme of an embodiment of the present invention, a server pre-records a corresponding relation of the target verification mode and the target function for the user identity information, and the verification modes of various kinds of verification information for various functions are adopted for the user. A problem that a malicious user can maliciously access all functions only needed password cracking is avoided, and thereby increasing a security of the access function in network applications.

The invention discloses a data protection device, a data protection method and a storage controller and relates to the technical field of data protection. The device comprises an encryption unit and a decryption unit, wherein the encryption unit is used for receiving first data of a to-be-written storage module and first storage address information and encrypting the first data based on the first storage address information and characteristic information of a storage module; and the decryption unit is used for reading second data corresponding to second storage address information from the storage module and decrypting the second data based on the second storage address information and the characteristic information. According to the data protection device, the data protection method and the storage controller, write data and read data are encrypted and decrypted based on a storage address and the characteristic information of the storage module, the security of data in the storage module can be improved; after the storage module executes an erasure operation, the read data do not carry information of a decrypted module, the password cracking difficulty can be effectively increased, the content protection is realized; and the data protection device and the data protection method are high in reliability and wide in application range.

The invention belongs to the information security technical field and provides an elliptical curve bypass attack-proof method based on the randomization tape symbol scalar multiplication. The elliptical curve bypass attack-proof method based on the randomization tape symbol scalar multiplication of the invention comprises the following steps that: firstly, a key in binary system is represented to be a randomization tape symbol binary number; secondly, a finite state machine for realizing the randomization tape symbol scalar product is obtained basing on a randomization addition and subtraction chains of the elliptical curve scalar product; finally, the elliptical curve scalar production operation is completed basing on the finite state machine and the improvement of the ability of the elliptical curve cryptograph to resist the bypass attack is realized. The invention which improves the security of the realization of the method can be applicable to the fields such as the cryptograph theory, the password cracking, the security chip design and the smart card design.

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 invention provides a verification method and a verification system. The verification method includes following steps: a) receiving a web access request and accessory user information, sent by a user; b) confirming a verification code grade provided for the user according to the received user information, wherein the verification code grade is confirmed according to a user experience degree grade and the fact that whether a machine cracking difficulty grade is added; c) obtaining a verification code corresponding to the verification code grade according to the confirmed verification code grade, and sending the verification code to the user; d) receiving a verification code input by the user according to the verification code corresponding to the verification code grade and performing verification; e) returning a verification result to the user. According to the verification method and the verification system, the verification code grade is confirmed based on friendliness of the user and cracking difficulty of a machine, and therefore not only are network insecurity and inequity behaviors such as malicious password cracking, ticket brushing and forum irrigation, but also the common user can obtain good user experience.

The invention discloses an AES parallel implementation method based on OpenCL. According to the scheme, when an AES performs parallel running on an AMD GPU based on OpenCL, optimum performance can be achieved. The method includes the following steps that first, the number of plaintext/ciphertext and the number of round key groups are determined, and plaintext /ciphertext and round key data are prepared; second, an executing mode of the AES is determined, and preparation is made for writing of a KiReadyThread; third, the KiReadyThread is written; fourth, a master OpenCL program file is written, and preparation is made for execution of an OpenCL program; fifth, program running parameters are set, memory space is allocated, and the program runs; sixth, the encryption and decryption result is acquired, and resources are released. According to the method, in parallel running process of the AES, data are reasonably allocated in a memory and parallel granularity is reasonably selected so that running performance can be improved, and the method can be used for fast encryption and decryption or password cracking machines.

The invention relates to an intelligent door lock system and a control method and aims to solve the problems that an intelligent door lock in the prior art is easy to monitor, filch and falsify when adopting Bluetooth and WIFI to control unlocking. The intelligent door lock system comprises a door lock terminal, a mobile terminal and a cloud service terminal, wherein the cloud service terminal comprises a communication unit, an information processing unit, a binding unit and a dynamic password generation unit; the door lock terminal comprises a touch screen input unit, a decoding unit, a doorlock processing unit, a manager code setting unit and a screen locking unit. According to the intelligent door lock system, a manager password is set at the door lock terminal, the binding relationship between a user, the door lock terminal and the cloud service terminal is set up at the mobile terminal, the user can unlock the door after receiving the generated dynamic security password from themobile terminal, and the mobile terminal needs not to be connected with the door lock terminal, so the probability of password cracking is reduced, and energy consumption of the door lock terminal isreduced as well.

The invention relates to the technical field of password cracking, and discloses a WPA shared key cracking system based on a GPU cluster. The WPA shared key cracking system based on the GPU cluster specifically comprises a control node and a plurality of GPU computational nodes. The control node intercepts and obtains a WPA data package, a characteristic value extracting module extracts cracking characteristic values, and a user interaction module of the control node receives a password cracking range defined by a user; a password space partition module partitions password sections of certain ranges to all GPU computational nodes, and sends the password sections to all the corresponding GPU computational nodes; the GPU computational nodes calculate and obtain temporary verification parameters MIC_TMP, a breaking password passphrase is regarded as the shared key when the temporary verification parameters MIC_TMP are identical with a verification parameter MIC value, and password cracking is completed. According to the WPA shared key cracking system based on the GPU cluster, the GPU cluster is adopted to crack a password of a WPA/WPA2-PSK, multi-node GPU clusters are supported, expansion can be carried out properly according to needs, and cracking performance is improved well. Meanwhile, oriented to the heterogeneous characteristic of the GPU clusters, a reliable task dispatching system is designed, load balancing is achieved, and cracking speed is improved.

The application relates to a computer technology, and discloses a user authentication method and device aiming at ensuring the accuracy of authentication while reducing the operation complexity of a verification process. The method comprises the following step: a user authentication device real-timely collects and stores a plurality of user behavior data of a first user through a plurality of sensors, separately generates corresponding user characteristic information based on two segments of user behavior data with different storage time, and then matches the two pieces of user characteristic information, and judges that the user is successfully authenticated when a successful match is determined. Thereby, according to a method for authenticating the user by using the user characteristic information extracted based on the user behavior data, the information leakage can be effectively avoided, the difficulty of password cracking can be increased, the possibility of stealing or copying passwords by third parties can be effectively reduced, the accuracy of authentication can be ensured, and the security of the system can be enhanced.

The present invention discloses a gesture-based digital password input method and a system thereof. The system comprises the steps of S1, inputting a gesture in a collection darkroom and acquiring a depth image containing a hand area; S2, preprocessing the acquired depth image and segmenting a hand part to obtain the depth image of the palm of the hand part; S3, subjecting the depth image of the palm to gesture modeling to obtain a gesture model according to a predefined gesture category; S4, identifying the gesture model according to a mapping relationship between the predefined gesture category and digitals, and converting to obtain a corresponding digital code string. According to the technical scheme of the invention, the peeping phenomenon during the inputting process of passwords can be avoided. Meanwhile, no personal information including fingerprints and the like, which might be acquired by a lawless person, is left. Therefore, during the entire inputting process, no information is left, and the information leakage is avoided. The password cracking risk is small and the password inputting security is high.

The invention provides a dynamic password generation verification method, which involves the following parts: original prime number library, dynamic password group generation, dynamic password traversal sequence generation, dynamic password verification and redundancy processing. The dynamic password group is generated by the original prime number library through a randomization algorithm, including n 128-bit dynamic passwords; the dynamic password traversal sequence is a pseudo-random sequence generated by UID (Unique User ID); the dynamic password is triggered by the system clock according to a certain clock frequency The pointer is dynamically generated by traversing the dynamic cipher group according to the dynamic traversal sequence; the dynamic password verification is verified by matching the decrypted result of the encrypted dynamic cipher at the current moment with the redundant password in the dynamic cipher group, and at the same time adjusting the traversal pointer to avoid system errors. After the dynamic password group is generated, it is stored locally in encrypted mode. Two mechanisms are used for dynamic password group generation and dynamic password traversal sequence generation to minimize the possibility of password cracking.

The disclosure discloses a method and apparatus for setting a virtual keyboard which may adjust individual buttons in the virtual keyboard to prevent password cracking software from cracking a password by the approach of continuously trying to input a command sequence. The method comprises: in a current keyboard layout, receiving a character string constituted by selected button key values for password check; when it is detected that the character string matches a preset password, passing the password check of the character string; when it is detected that the character string does not match the preset password, resetting the keyboard layout, and changing the button positions corresponding to the button key values in the virtual keyboard; and in the reset keyboard layout, receiving the character string constituted by selected button key values to continue to perform the password check.

The invention provides a password lock unlocking method, system and server, equipment and a password lock. The server comprises a receiving module, a synchronization time module, a password generatorand a transmission module, wherein the receiving module is used for receiving an unlocking request; the synchronization time module is used for acquiring synchronization time of time synchronization with a password generator in the password lock; the password generator is used for generating a random password according to the unlocking request and the synchronization time; and the transmission module is used for sending a random password to a mobile terminal. The password lock comprises a lock body, a password generator, a password receiving module, a password comparator and an unlocking control module, wherein the password generator is used for synchronously generating a random password identical to the random password generated in the server; the password receiving module is used for receiving an input unlocking password; the password comparator is used for comparing whether the received unlocking password is identical to the generated random password or not; and the unlocking control module is used for controlling the lock body to be opened or keep closed. Through adoption of the password lock unlocking method, system and server, a series of network problems caused by unlockingby means of network communication are solved, and the risk of password reusing and equipment password cracking is also avoided.

The invention discloses a password guessing set generating method and a password cracking method based on user name information. The password cracking method comprises the steps of: 1) labelling user names and passwords of a data training set leaked according to word segmentations and semantic structures, calculating the semantic similarity of the user names and passwords, wherein the semantic similarity comprises semantic structure similarity and semantic portion similarity; 2) applying the semantic similarity to PCFGs grammar, in another word, PCFGs grammar is built based on the semantic similarity; 3) building PCFGs grammar according to step 2), generating a password guessing set according to the probability of descending; 4) cracking the password according to the password guessing set. The password guessing set generating method and password cracking method have the advantages of utilizing the portion similarity and the structure similarity of the usernames and passwords, understanding the constitution semantic of the password, generating the password guessing set, and improving the password cracking efficiency.

The invention provides a system for cracking and restoring iPhone encrypted backup files. The system comprises a graphical user interface (GUI) module, a password cracking module, a backup file restoring module and a keychain checking module. The GUI module is used for interactive operation between a user and a device; the password cracking module is connected with the GUI module and used for cracking encrypted files to obtain cracking passwords; the backup file restoring module receives the cracking passwords to restore encrypted backup files; and the keychain checking module receives the cracking passwords to check data stored in the keychain. According to the system for cracking and restoring encrypted backup files, the iPhone encrypted backup files are restored directly through the encrypted passwords, so that data in the iPhone are obtained, and the inside of existing mobile phone forensic systems can be integrated, and evidence obtaining and case detecting of office departments are facilitated.

The invention discloses a cloud platform based human health detection system and method. The system comprises a collector, a cloud server and a health management center. The collector and the health management center are connected with the cloud server through a network respectively. A recognition module is a fingerprint recognition module, and a display module is a touch display screen. According to the system and the method, human fingerprints are used as user login passwords, so that the password strength is improved, and disturbance caused to users due to password cracking is prevented; the whole system is simple in structure and high in practicality.

The invention relates to a password guessing set generation method based on byte pair encoding, a password decoding method and a device. Firstly, byte pair encoding is used to segment the cipher of training set, and then Markov model is used to generate the cipher guess set according to the result of word segmentation. Further, the plaintext password is decoded by string matching using the password guess set. The invention fully utilizes the idea of statistical probability to segment the cipher, and uses Markov model to explore the correlation between the cipher components, thereby improving the cipher guess effect and the cipher decoding efficiency. The password guessing set generated by the invention is directly used for string matching, so that the password guessing set can be better generated and the security strength of the password can be evaluated.

The invention relates to the technical fields of cryptography, information encryption and decryption and symmetric encryption, and provides a data transmission encryption method, which comprises the following steps of: obtaining a current data storage request, and generating a first token and a first random bit according to the current data storage request; Extracting to-be-stored data contained in the current data storage request, and performing AES encryption on the to-be-stored data based on the first token and the first random bit to obtain a first key; And performing md5 encryption on thefirst key to obtain a ciphertext data packet. When the front end receives the data storage request once, the data needing to be transmitted at the time is encrypted and transmitted to the rear end, the rear end verifies the password of the data transmission, and when the password is incorrect, the rear end refuses the data storage request at the time. And the front end dynamically generates the password through the AES every time, so that the security of data transmission is improved. And through the AES cryptographic algorithm, the adjustment is convenient, the password cracking difficulty is increased, and the data transmission security is improved again.

The invention discloses a storage device and a verification code application method and device. The verification code application method comprises the steps: obtaining a verification request of a client; providing a verification code for the client; obtaining the identity information of the client and current behavior data of a user of the client; taking the identity information and the behavior data as parameters, and obtaining an evaluation result of the current verification behavior through a preset learning model; generating a verification result or updating the verification code accordingto a preset rule; and returning to the step of providing the verification code to the client if the verification code is updated. According to the invention, a real user can conveniently and quicklycomplete verification, high security can be kept while good user experience is ensured for the user, and malicious behaviors such as password cracking, ticket swiping and forum water filling can be effectively avoided.