63 results about "Public key authentication" patented technology

A public key authentication system and method for use in a computer system having a plurality of users. The system includes a virtual smart card server, storage connected to the virtual smart card server, and a virtual smart card agent connected to the virtual smart card server. The storage includes a plurality of virtual smart cards, wherein each virtual smart card is associated with a user and wherein each smart card includes a private key. The virtual smart card agent authenticates the user and accesses the authenticated user's virtual smart card to obtain the user's private key.

A method, system, and computer-readable code for delegating authority in a public key authentication environment from a client to a server machine or process, in order that the server machine or process can then securely access resources and securely perform tasks on behalf of the client. The authority is delegated by obtaining tickets (or other equivalent representation of user credentials) from a private key system, such as the Kerberos system, where the tickets identify a user's access rights or privileges. The present invention provides several alternative techniques with which this delegation model can be implemented. In these techniques, the client does not directly access the private key system.

Disclosed are a method and a system for mutual inclusive authentication between a service provider, a terminal and a user identity module. The authentication system is configured in a structure that can interact with a public key infrastructure of the current network security environment and can be independently used in a specific network system. The inclusive authentication method is divided into public key authentication and symmetric key authentication. Mutual authentication can be made between a service provider, a terminal and a user identity module using any of the two authentication schemes. Then a user can access content on any terminal device using the content license based on the user's identity.

In a user authentication system according to the present invention, at user registration, a client device obtains a signature for a user ID, a password, and a public key by using a private key corresponding to the public key, and sends user information that includes the signature and the above-described information items to a service providing apparatus. The service providing apparatus verifies the signature by using the public key and stores the user information by which the password and the public key are associated with each other. When a request for a service is made, the client device allows authentication processing by sending to the service providing apparatus an authentication response that includes the user ID together with password authentication information, a signature for a challenge sent from the service providing apparatus, or a signature for the password and the challenge, irrespective of whether the authentication method for the service is password authentication, public key authentication, or public-key-and-password combination authentication.

Management of user keys for public key authentication using the SSH in large SSH deployments is automated by deploying a management system in the environment, discovering SSH identity keys and authorized keys, analyzing authorized connections between user accounts, and automatically managing the authorized connections and the key pairs used for authentication.

The invention provides a method for cross-isomerism domain identity authentication and session key negotiation based on an access authorization ticket. The method mainly comprises the steps that firstly, a first-level trust relationship is established between a CA of a PKI domain and an AS of a Kerberos domain through a distributed trust model based on a public key authentication mechanism; on the basis, the authorization ticket allowing an outer-domain user to have access to resources of the domain is generated and distributed by the CA or the AS united with a TGS, and through design of a two-way cross-domain authentication and key negotiation protocol based on a symmetric key cryptosystem, a second-level trust relationship allowing the outer-domain user to have access to the resources of the domain is established. On the premise that the requirements for safety of the levels are satisfied, the calculated amount and the communication traffic of a terminal are effectively reduced, public key encryption and decryption operations of a Kerberos domain terminal can be completely avoided, and the implementation is good in the cross-isomerism domain identity authentication process of a dynamic distributed type system, session key negotiation is completed when identity authentication is conducted, and the protocol efficiency is high.

One embodiment of the present invention relates to a method for key management in a communications network. In this method, a public key authentication scheme is carried out between a security controller and a plurality of nodes to establish a plurality of node-to-security-controller (NSC) keys. The NSC keys are respectively associated with the plurality of nodes and are used for secure communication between the security controller and the respective nodes. Other methods and devices are also disclosed.

When a special relationship is present between IC card owners, authority of one of the IC card owners cannot be easily given to the other owner of the IC card. However, an IC card of a second owner can issue a public key certificate of the IC card of a first owner so that the IC card of the first owner can be recognized as a child card of the IC card of the second owner. Thus, the first generation card authenticated by a route authentication station is set as an ancestor which can generate a descendent card which receives the authentication. By checking which parent card has issued the public key authentication owned by the child card, it is possible to given the authority of the parent card to the child card.

Methods and systems may provide for technology to receive, by a computing device, privacy information, a unique identifier (ID) and one or more digital signatures associated with the privacy information and the unique ID. Additionally, the technology may store the unique ID and the digital signature(s) to a record of an authentication log on the computing device and delete the privacy information from the computing device. In one example, the technology conducts a public key authentication of the digital signature(s).

Provided an information processing apparatus including a number generation unit configured to generate numbers used in coefficients of terms included in a pair of multi-order multivariate polynomials F=(f1, . . . , fm), using a predetermined function, from information shared between entities executing an algorithm of a public-key authentication scheme or a digital signature scheme that uses a public key including the pair of multi-order multivariate polynomials F, and an allocation unit configured to allocate the numbers generated by the number generation unit to the coefficients of the multi-order multivariate polynomials for which the pair of multi-order multivariate polynomials F are included in constituent elements.

A communication apparatus having a public key authentication function and a communication method thereof are disclosed. The communication apparatus includes a calculating unit to calculate a first user authentication data for authenticating public information, and a transmitting and receiving unit to transmit the calculated first user authentication data and the public information to be authenticated, and to transmit a password in a form in which a user characteristic input for authenticating the public information is reflected. Accordingly, if the parties to a communication unexpectedly request mutual authentication under an IP-based communication environment, the apparatus can safely authenticate the public information with a use of a user characteristic sensing channel.

The invention discloses a lightweight certificateless authentication method, client and system, and relates to the technical field of information security. The method comprises the following steps: the client generates a temporary public key and a temporary private key, and sends an identity label and the temporary public key to a key generation center; the key generation center calculates according to the identity identifier and the temporary public key to obtain a part of public key and a part of private key, and sends the part of public key and the part of private key to the client; the client calculates according to the temporary private key and the part of private key to obtain a complete private key; and when the client performs public key verification with a third party, verification is performed with the third party according to the complete private key, the identity identifier and the part of the public key. The method is suitable for the environment of the Internet of Things,is low in operation complexity, can be compatible with an existing public key infrastructure, and does not need complex certificate management, the client has complete autonomy for the private key, does not have a secret key escrow problem, and needs less data to be transmitted during public key authentication.

The invention provides a data secure transmission system and method for firmware upgrade. The system comprises an authentication center, a firmware distribution unit and a firmware receiving unit. The authentication center is configured to generate public key authentication information of corresponding units on the basis of identity identification codes and public keys of the units and send the public key authentication information to the corresponding units. The firmware distribution unit is configured to take the selected firmware upgrade information as a transmission data file, generates an encryption data file on the basis of the public key authentication information of the firmware receiving unit and send the encryption data file to the corresponding firmware receiving unit. The firmware receiving unit is configured to receive and decrypt encryption data file sent by the firmware distribution unit, thereby obtaining the firmware upgrade information. The secure transmission of the data in the firmware upgrade process is fully ensured.

The invention discloses a wireless security access authentication method, belonging to field of network communication security authentication. The content of the method comprises an EBAF (Elliptic curve based authentication scheme) initialization protocol, an EBAF authentication protocol and a selectable EBAF cancel protocol, wherein the EBAF initialization protocol generates an elliptic curve, generates secret keys of resource owners, and distributes secret keys of terminals; in the EBAF authentication protocol, authentication both parties authenticate a message of a counter party with respective Diffie-Hellman secret keys; and in the EBAF cancel protocol, a group administer generates a new key pair, wherein the terminal which can not be authenticated by the key pair can be cancelled. The invention not only keeps the security of the public key authentication, but also effectively reduces the authentication cost.

The invention belongs to the technical field of CPU cards and provides a non-contact processor card based on combined public key authentication and a use method. The non-contact processor card comprises a chip, a safe serial port, a radio frequency unit, a micro processor, an RAM, an ROM, an EEPROM, a safe logic unit and a self-destruction unit, wherein the safe serial port, the radio frequency unit, the micro processor, the RAM, the ROM, the EEPROM, the safe logic unit and the self-destruction unit are installed on the chip and are connected with the chip through circuits. The use method of the combined public key authentication is achieved, collusion attack prevention capacity is improved by means of a chaotic random sequence generated by means of chaotic mapping, a puzzling secret key of a reversion prevention project is additionally arranged in a secrete key unit, meanwhile, a self-destruction logic unit for preventing temptation attacks is additionally arranged, transmission secrete keys are not needed, requirements for safety in the communication process are not high, use safety is high, large-scale popularization and use are facilitated, and the CPU card and the use method are suitable for meeting service requirements on the basis of mobile communication.

The invention discloses a without-trust third party public key authentication method based on a speaker voice print, comprising the following steps that 1. the two parties determine a voice channel; 2. the two parties enable the voice channel and respectively establish a GMM (Gaussian mixture model) of the speaker voice print of the opposite side; 3. the two parties respectively generate a public and private key pair; the two parties are symmetrical below; 4. a public key sender states a public key for a receiver through the voice; 5. a public key receiver carries out voice print identification on a voice stream for stating the public key by using the speaker GMM to judge whether to be the sender or not, if yes, carrying out a step 6, and if not, denying; 6. the public receiver extracts the public key of the call voice, and the encrypted public key for a random number is generated and sent to a public key sending end; and 7. after the public key sender receives the random number, the random number is encrypted by the public key and sent to the receiver; after the receiver receives the random number, the random number is decrypted and verified by the public key in the step 6, if pass, the public key authentication is successful, and if fail, the public key authentication fails. The invention does not need the third party to participate and is convenient and flexible to use; and the two communication parties directly transfer and authenticate the public key through a voice call, thereby effectively preventing the attack of other people.

Provided is an information processing apparatus including a number acquisition unit configured to acquire a number used for a coefficient of each term constituting a set of a multi-order multivariate polynomial F=(f1, . . . , fm), the number generated using a predetermined function from information shared between entities that execute an algorithm of a public-key authentication scheme or a digital signature scheme that uses a public key including the set of the multi-order multivariate polynomial F, and a polynomial calculation unit configured to calculate a multi-order multivariate polynomial for an input value of a variable by allocating the number acquired by the number acquisition unit to coefficients of the multi-order multivariate that includes the set of the multi-order multivariate polynomial F as a structural element. The polynomial calculation unit skips a calculation process for a term in which an input value of at least one variable is 0

A combination public key authentication password method based on conic curves includes the following steps that 1, a public password parameter based on a residual class ring conic curve is generated; 2, public and private secret keys based on residual class ring conic curves are generated; 3, a primary algorithm based on a combination public key password method based on the conic curves is used.

The invention relates to the technical field of video conferences, and particularly discloses an identity authentication method and electronic equipment, and the method comprises the steps: generatinga temporary key pair, wherein the temporary key pair comprises a temporary public key and a temporary private key; sending the temporary public key to the security hardware; receiving temporary public key authentication data returned by the security hardware based on the temporary public key, wherein the temporary public key authentication data is obtained by signing a temporary public key by using a hardware private key by the security hardware; signing the identity authentication data sent by the client based on the temporary private key to obtain a signature message, and adding the temporary public key authentication data into the signature message; and sending the signature message to the client, so that the client performs identity authentication on the server. In the security hardware, only the hardware private key needs to be adopted to sign the temporary public key for one time, and the other signatures of the identity authentication data sent by all the clients can be completed in the server; and the processing performance of the server is used for signing, so that the identity authentication efficiency is greatly improved.

In a method for efficient password based public key authentication between a first user device and a second user device, a shared password is received by a first user device which generates a first hash value of the shared password and a first value, wherein the first value is composed of at least a product of the first hash value and a first unique security constant associated with the first user. The first user device then generates a first random value generated using data from a generator element, and a first blind public key associated with the first user device, wherein the first blind public key is generated using a first public key. The first user device concurrently sends the first value and the first blind public key to the second user device for authentication.

The invention relates to a character deformation-based graphical password authentication method. The scheme comprises the following steps of: adopting a personalized character deformation graphical password instead of a text password, and presetting a plurality of cartoon character graphics corresponding to a plurality of postures and deformation effects by using a system; constructing an image deformation technology-based public key authentication system in an image password transmission process, transmitting a public key which is an image deformation parameter, and performing authentication by taking an image backward deformation parameter as a private key, wherein a deformation and backward deformation key pair is generated by deformation restrictions, and the private key is insoluble from the public key; enhancing the machine authentication resistance of an image password system by adopting a multi-posture and identical-semanteme cartoon character model generation technology; and fusing a character image deformation technology into the graphical password to increase the coding fuzziness of the password as well as brute force cracking complexity. The method is easy to operate by a user, convenient to memorize and high in system security. The operability and security can be improved by adopting a character picture selection operating way in combination with the cartoon character model generation technology and the image deformation technology.