Earticle

초록

영어

As the amount of digitized private data grows, security requirements such as irrecoverable file deletion are gaining importance. Existing secure file deletion tools, which repeatedly over-write the contents to be deleted, do not work properly with NAND-based block devices because these devices perform out-of-place updates on over-write requests, retaining the original data. This paper presents a method for secure file deletion in NAND-based block devices. The presented scheme maintains the over-write count and the physical locations of the original data. If the over-write count exceeds a predefined threshold, the scheme finds the original data that has been invalidated by previous over-write operations and removes the original data using the block erasure operation. The erased data is irrecoverable. Trace-driven simulation shows that the presented scheme reduces the total I/O time up to 104 % under a realistic workload compared to existing file deletion schemes.

목차

Abstract
 1. Introduction
 2. Flash translation layer
 3. Secure file deletion for page mapping
 4. Performance Evaluation
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Ilhoon Shin [ Seoul National University of Science & Technology ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Security and Its Applications

• 간기

  격월간

• pISSN

  1738-9976

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605