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The Development of a Portable Hard Disk Encryption/Decryption System with a MEMS Coded Lock.

Weiping Zhang¹, Wenyuan Chen, Jian Tang

¹Key Laboratory for Thin Film and Microfabrication of Ministry of Education, National Key Laboratory of Nano/Micro Fabrication Technology, Research Institute of Micro/Nano Technology, Shanghai Jiao Tong University, Shanghai 200240, China; E-Mails: chenwy@sjtu.edu.cn (W.C.); SJTUtj@126.com (J.T.); xpsjtu@sohu.com (P.X.); ybsjtu@sohu.com (Y.L.); lshyong@tom.com (S.L.).

Sensors (Basel, Switzerland)

|February 1, 2012

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This study introduces a novel portable hard-disk encryption system featuring a MEMS coded lock for user authentication and AES key generation. The system successfully encrypts/decrypts data, achieving a 17 MB/s read-write speed.

Area of Science:

Electrical Engineering
Computer Engineering
Materials Science

Background:

Data security for portable storage is critical.
Existing encryption methods often lack robust, integrated authentication.
MEMS technology offers potential for novel security solutions.

Purpose of the Study:

To develop and evaluate a portable hard-disk encryption/decryption system.
To integrate a MEMS coded lock for user authentication and key management.
To achieve secure and efficient data handling on portable hard drives.

Main Methods:

Designed and implemented a system using Field Programmable Gate Arrays (FPGA) for ATA protocol, MEMS control, and AES encryption circuits.
Fabricated a MEMS coded lock using a LIGA-like process and precision engineering.

Keywords:

FPGA MEMS coded lock portable hard disk encryption/decryption system

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Integrated authentication, encryption/decryption, and portable hard-disk interface modules.

Main Results:

The MEMS coded lock accurately discriminated user passwords.
The AES encryption module successfully obtained keys from the MEMS lock.
The system demonstrated effective data encryption/decryption with a read-write speed of 17 MB/s in Ultra DMA mode.

Conclusions:

The novel portable hard-disk encryption system with a MEMS coded lock is feasible and effective.
FPGA implementation provides a flexible platform for integrated security functions.
The system offers a promising solution for secure portable data storage.