Zhaozhi Wu

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This paper describes the technical details of designing and implementing a simple anti breaking CAPTCHA system for ordinary MIS, including the layout of the characters, forming of CAPTCHA image, designing of corresponding cookies, etc. By the clever layout and twisting manipulation, its anti breaking strength is enhanced greatly. The system is designed in C(More)
The paper describes the technical details of design and implementation of the built-in boot loader for ARM uCOS, including self-adapted booting technique, using of MMU, handle of interrupts, indirect setting of interrupt vectors, accessing of large page flash, programming for UART, etc. An example is provided to demonstrate the real effect of the built-in(More)
This paper describes the technical details of the design and implementation of a Web programming library for Web based MIS, including Web page authoring functions, secure login functions, and utility functions, all integrated into one library. The library is programmed in C on Linux platform with GNU tool chain. A demo example is provided to show the usage(More)
The article describes design and implementation of a secure proxy base on Secure Socket Layer (SSL) protocol for ARM platform. The main content includes porting method of openssl to ARM platform, structure analysis and implementation of the SSL proxy, installation and running of it on ARM machine, and an application example of it as Web proxy on the(More)
The article describes design and implementation of an embedded secure web server base on Secure Socket Layer (SSL) protocol for ARM platform. The main content includes porting method of openssl to ARM platform, structure analysis and implementation of the secure web server, installation and running of it on ARM machine, and an application example of it on(More)
Sequence alignment is one of the most common tasks in molecular biology or bioinformatics. This paper presents a multiple sequence alignment algorithm based on genetic and ant colony algorithms. The algorithm solves the multiple sequence alignment in three stages. At first, we use a divide-and-conquer strategy to divide the set of sequences into several(More)
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