公开(公告)号：US09515994B2

公开(公告)日：2016-12-06

申请号：US14614241

申请日：2015-02-04

Applicant: Infosys Limited

Inventor： Kulvaibhav Kaushik ,  Vijayaraghavan Varadharajan ,  Rajarathnam Nallusamy

IPC: H04L9/00 ,  H04L9/32 ,  H04L29/06 ,  H04L9/08 ,  H04L9/30

CPC classification number: H04L63/0281 ,  H04L9/0825 ,  H04L9/30 ,  H04L63/0428 ,  H04L63/0435 ,  H04L63/0478 ,  H04L2209/76

Abstract: A method and system for a multi-user searchable encryption system over ordered keywords is disclosed. The system includes a key generation server which issues a primary key to a user terminal device and a secondary key to a proxy server. A trapdoor is sent by the user terminal and received by the proxy server. The trapdoor is encrypted at the proxy server. The proxy server receives cypher text from the user terminal and sends the cypher text to the database server. A search keyword inputted by the user at the user terminal is used to perform a lookup in encrypted data.

Abstract translation: 公开了一种用于多用户可搜索加密系统的有序关键词的方法和系统。 该系统包括向用户终端设备发出主键的密钥生成服务器和代理服务器的辅助密钥。 一个陷门由用户终端发送并由代理服务器接收。 陷门在代理服务器上进行加密。 代理服务器从用户终端接收密码文本，并将密码文本发送到数据库服务器。 由用户在用户终端输入的搜索关键字用于在加密数据中执行查找。

公开(公告)号：US20230359482A1

公开(公告)日：2023-11-09

申请号：US17750034

申请日：2022-05-20

Applicant: INFOSYS LIMITED

Inventor： Mohammed Aamir QUDSI ,  Vijayaraghavan Varadharajan ,  Akshay Pachbudhe

IPC: G06F9/46 ,  G06N10/60

CPC classification number: G06F9/46 ,  G06N10/60

Abstract: A method and system for performing an approximate optimization for solving a global optimization task, comprising of receiving data representing one or more global task objectives performing an optimization technique to cause transition of the global optimization task from a first Hamiltonian state towards a second Hamiltonian state identifying, through a machine learning model, an equation/algorithm to obtain a solution to the global optimization task in the quantum domain, wherein the identification is based on clustering equation/algorithm trained with predefined types of decision variables.

公开(公告)号：US10007803B2

公开(公告)日：2018-06-26

申请号：US14058106

申请日：2013-10-18

Applicant: Infosys Limited

Inventor： Kulvaibhav Kaushik ,  Vijayaraghavan Varadharajan ,  Rajarathnam Nallusamy

IPC: G06F21/62 ,  G06F17/30 ,  H04L9/30 ,  G06F7/72 ,  H04L29/06 ,  H04L29/08

CPC classification number: G06F21/6227 ,  G06F7/725 ,  G06F7/726 ,  G06F16/152 ,  G06F16/245 ,  G06F2221/2107 ,  H04L9/3013 ,  H04L63/0428 ,  H04L63/1441 ,  H04L67/1097

Abstract: The present invention relates to a computer-implemented method, system and computer readable medium for searching over encrypted keywords in a database. The method includes the steps of generating at least one keyword, generating a plurality of different encrypted keywords corresponding to the keyword, storing the at least one encrypted keyword in the database, generating a plurality of different trapdoors for the keyword, verifying the plurality of different trapdoors with the plurality of different encrypted keywords corresponding to the keyword, and determining the keyword is found if the plurality of different trapdoors match with one the encrypted keyword corresponding to the keyword, otherwise determining the keyword is not found.

公开(公告)号：US11907807B2

公开(公告)日：2024-02-20

申请号：US17706215

申请日：2022-03-28

Applicant: INFOSYS LIMITED

Inventor： Vipul Jain ,  Aditya Bothra ,  Vijayaraghavan Varadharajan ,  Umberto Borso

IPC: G06N10/40

CPC classification number: G06N10/40

Abstract: A method of enhanced hybrid quantum-classical computing mechanism for solving optimization problems is disclosed comprising altering a value of a configuration chromosome by storing an angle memory on a shared classical memory. The angle memory corresponds to a predefined configuration chromosome. The method then generates a state vector based on the angle memory and reinitializes a quantum circuit from the state vector. Subsequently, generating at least two most probable configuration chromosome from the reinitialized quantum circuit corresponding to a superposition of qubits in a position chromosome. Subsequently selecting one of the at least two most probable configuration chromosomes for each position chromosome after evaluation by a fitness function.

公开(公告)号：US20140075202A1

公开(公告)日：2014-03-13

申请号：US13969404

申请日：2013-08-16

Applicant: Infosys Limited

Inventor： Vijayaraghavan Varadharajan ,  Sivakumar Kuppusamy ,  Rajarathnam Nallusamy

IPC: G06F21/31

CPC classification number: G06F21/41 ,  G06F21/31 ,  G06F21/34 ,  H04L29/06768 ,  H04L63/0815

Abstract: An embodiment for securely accessing services of a service provider based on single sign on. The user device is authenticated by an authentication server if the computed hash of the first random number r is same as the received hash of the first random number r sent by a user device. Thereafter, the second random number y, the user id and an element Q are encrypted using a service provider password and send to the service provider. The user device computes a first discrete exponential function Z using the element Q and the second random number y and sends along with the user id to the service provider. The service provider computes a second discrete exponential function Z′ using the element Q and the second random number y received from the authentication server and provides the user device access to the services if Z is equal to Z′.

Abstract translation: 基于单一登录安全访问服务提供商的服务的实施例。 如果所计算的第一随机数r的散列与由用户设备发送的第一随机数r的接收散列相同，则认证服务器认证用户设备。 此后，使用服务提供商密码对第二随机数y，用户ID和元素Q进行加密并发送给服务提供商。 用户设备使用元素Q和第二随机数y来计算第一离散指数函数Z，并与用户ID一起发送到服务提供商。 服务提供商使用从认证服务器接收的元素Q和第二随机数y计算第二离散指数函数Z'，并且如果Z等于Z'，则提供用户设备对服务的访问。

公开(公告)号：US09449167B2

公开(公告)日：2016-09-20

申请号：US13969404

申请日：2013-08-16

Applicant: Infosys Limited

Inventor： Vijayaraghavan Varadharajan ,  Sivakumar Kuppusamy ,  Rajarathnam Nallusamy

IPC: G06F21/41 ,  G06F21/31 ,  H04L29/06 ,  G06F21/34

CPC classification number: G06F21/41 ,  G06F21/31 ,  G06F21/34 ,  H04L29/06768 ,  H04L63/0815

Abstract: An embodiment for securely accessing services of a service provider based on single sign on. The user device is authenticated by an authentication server if the computed hash of the first random number r is same as the received hash of the first random number r sent by a user device. Thereafter, the second random number y, the user id and an element Q are encrypted using a service provider password and send to the service provider. The user device computes a first discrete exponential function Z using the element Q and the second random number y and sends along with the user id to the service provider. The service provider computes a second discrete exponential function Z′ using the element Q and the second random number y received from the authentication server and provides the user device access to the services if Z is equal to Z′.

Abstract translation: 基于单一登录安全访问服务提供商的服务的实施例。 如果所计算的第一随机数r的散列与由用户设备发送的第一随机数r的接收散列相同，则认证服务器认证用户设备。 此后，使用服务提供商密码对第二随机数y，用户ID和元素Q进行加密并发送给服务提供商。 用户设备使用元素Q和第二随机数y来计算第一离散指数函数Z，并与用户ID一起发送到服务提供商。 服务提供商使用从认证服务器接收的元素Q和第二随机数y计算第二离散指数函数Z'，并且如果Z等于Z'，则提供用户设备对服务的访问。

公开(公告)号：US20150229611A1

公开(公告)日：2015-08-13

申请号：US14614241

申请日：2015-02-04

Applicant: Infosys Limited

Inventor： Kulvaibhav Kaushik ,  Vijayaraghavan Varadharajan ,  Rajarathnam Nallusamy

IPC: H04L29/06 ,  H04L9/08

CPC classification number: H04L63/0281 ,  H04L9/0825 ,  H04L9/30 ,  H04L63/0428 ,  H04L63/0435 ,  H04L63/0478 ,  H04L2209/76

Abstract: A method and system for a multi-user searchable encryption system over ordered keywords is disclosed. The system includes a key generation server which issues a primary key to a user terminal device and a secondary key to a proxy server. A trapdoor is sent by the user terminal and received by the proxy server. The trapdoor is encrypted at the proxy server. The proxy server receives cypher text from the user terminal and sends the cypher text to the database server. A search keyword inputted by the user at the user terminal is used to perform a lookup in encrypted data.

Abstract translation: 公开了一种用于多用户可搜索加密系统的有序关键词的方法和系统。 该系统包括向用户终端设备发出主键的密钥生成服务器和代理服务器的辅助密钥。 一个陷门由用户终端发送并由代理服务器接收。 陷门在代理服务器上进行加密。 代理服务器从用户终端接收密码文本，并将密码文本发送到数据库服务器。 由用户在用户终端输入的搜索关键字用于在加密数据中执行查找。

公开(公告)号：US20140122900A1

公开(公告)日：2014-05-01

申请号：US14058106

申请日：2013-10-18

Applicant: Infosys Limited

Inventor： Kulvaibhav Kaushik ,  Vijayaraghavan Varadharajan ,  Rajarathnam Nallusamy

IPC: G06F21/60 ,  G06F17/30

CPC classification number: G06F21/6227 ,  G06F7/725 ,  G06F7/726 ,  G06F17/30109 ,  G06F17/30424 ,  G06F2221/2107 ,  H04L9/3013 ,  H04L63/0428 ,  H04L63/1441 ,  H04L67/1097

Abstract: The present invention relates to a computer-implemented method, system and computer readable medium for providing a searching over encrypted keywords in a database. The method comprises the steps of generating at least one keyword, generating a plurality of different encrypted keywords corresponding to said keyword, storing said at least one encrypted keyword in said database; generating a plurality of different trapdoors for said keyword, verifying said plurality of different trapdoors with said plurality of different encrypted keywords corresponding to said keyword and determining said keyword if said plurality of different trapdoors match with one said encrypted keyword corresponding to said keyword else determining said keyword is not found.

Abstract translation: 本发明涉及一种计算机实现的方法，系统和计算机可读介质，用于在数据库中提供对加密关键字的搜索。 该方法包括以下步骤：生成至少一个关键字，产生与所述关键字对应的多个不同的加密关键字，将所述至少一个加密的关键字存储在所述数据库中; 为所述关键字生成多个不同的陷门，用与所述关键词相对应的所述多个不同加密关键字验证所述多个不同的陷阱，并且如果所述多个不同的陷阱与所述关键字对应的所述多个不同的陷阱与所述关键字相匹配，则确定所述关键字，否则确定所述 关键字未找到。