The Proposed of the Encryption Method and Designed of the Secure Key Using Initial Bad Block Information Physical Address of NAND Flash Memory

Security key generation method by hardware or software related techniques have been variously proposed. This study analyzed the existing security key generation techniques, and propose the design of a new NAND Bad block based security key(NBSK) using a Bad Block information in the NAND flash memory, and propose a new encryption method using the same. Bad Block present in the NAND flash memory is also generated during production and sometimes occur during operations. Initial Bad Block information generated during production is not changed, Bad Block information that may occur during operation has a characteristic that can be changed periodically. This study is designed of the new secure key using initial Bad Block information physical address generated during manufacturing a NAND flash memory, and proposed of the new encryption method. With the proposed key and method can satisfy the general security characteristics, such as the creation and distribution of the secure key authentication and confidentiality and the simplicity of the security key. 키워드 : 불량 블록, 불량 블록 테이블, 낸드, 보안키 Key word : Bad Block, BBT, NAND, Secure Key Received 20 July 2016, Revised 22 July 2016, Accepted 04 August 2016 * Corresponding Author Seong-Ryeol Kim(E-mail: srkim@cju.ac.kr, Tel:+82-43-229-8490) Department of Computer & Information Engineering, Cheongju University, Cheongju, 28503, Korea Open Access http://doi.org/10.6109/jkiice.2016.20.12.2282 print ISSN: 2234-4772 online ISSN: 2288-4165 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License(http://creativecommons.org/li-censes/ by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Copyright C The Korea Institute of Information and Communication Engineering. Journal of the Korea Institute of Information and Communication Engineering NAND Flash Memory의 초기 Bad Block 정보 물리주소를 이용한 보안키 설계와 암호화 기법 제안