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：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：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。