George Mason University

Singapore Management University

Huawei Technologies Co., Limited

Huawei International Pte. Ltd.

Yingjiu Li

Sushil Jajodia

Huiping Guo

Ke Xu

Tsz Hon Yuen

Guilin Wang

Robert Huijie Deng

Hui Cui

Daibin Wang

Haixia Yao

A data processing method and apparatus include: generating, by a terminal device, a first public key and a first private key; sending the first public key to a key generation center (KGC), where the first public key is used by the KGC or a server to generate a transform key, and the transform key is used by the server to transform data that is encrypted based on an attribute structure of the terminal device into data that is encrypted based on the first public key; receiving second data sent by the server, where the second data is data that is generated after the server processes first data according to the transform key; and decrypting the second data according to the first private key. In the data processing, main work is completed by the server with no need to use a secure channel to transmit a key.

Data processing method and apparatus

System and methods for securing inter-component communications in an operating system are provided. Systems and methods provided herein secure inter-component communications in an operating system by selectively generating instances when inter-component communication requests occur, whereby each of the generated instances are attached to a newly created blocked permissions list. System and methods further manage the invocation of Application Programming Interfaces by applications or instances in the operating system by determining whether the invocation of the Application Programming Interface is allowed or declined based on the blocked permissions list and default permission list associated with each invoking application or instance.

System and method for securing inter-component communications in an operating system

Disclosed is a fragile watermarking scheme for detecting and localizing malicious alterations made to a database relation with categorical attributes without introducing distortions to cover data. A watermark for a tuple group may be inserted by selectively switching the position of tuples in tuple pairs using a tuple hash associated with each tuple in the tuple pair; and a corresponding bit in a watermark derived from the tuple group using a embedding key, a primary key and hash functions.

Fragile watermarks

A watermarking system embeds a watermark into data values that may be streamed. A data hash is calculated using data values and a hash key. The data values are grouped. The groups include a first group and a second group. A first group hash is calculated using data values in the first group and a first group hash key. A second group hash is calculated using data values in the second group and a second group hash key. A watermark is constructed based on the first group hash and the second group hash. The value of at least one of the data values in the first group is modified using the watermark.

Method and apparatus for watermarking stream data

Growing community of inventors

Singapore, Singapore

Yingjiu Li