FLASH MEMORY DEVICE HAVING SECURE FILE DELETION FUNCTION AND METHOD FOR SECURELY DELETING FLASH FILE
摘要
A flash memory device having a secure file deletion function and a method for securely deleting a flash file are provided to store encoded data and a decoding key in a separate memory block and disable recovery of the encoded data through deletion of the decoding key, thereby guaranteeing quick and secure deletion of a flash file. An end node having the same binary value as LSB(Least Significant Bits) of file ID of a flash file which is a deletion target is searched(S120). A header block indicating the end node is copied to a DRAM(Dynamic Random Access Memory). An object header having the file ID of a deletion target file is set invalid(S140). Effective object headers are stored in the header block(S150). The copied header block is deleted from the DRAM(S160).
申请公布号
KR20090071348(A)
申请公布日期
2009.07.01
申请号
KR20080091545
申请日期
2008.09.18
申请人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人
PARK, SEUNG MIN;KIM, JAE MYOUNG;JUNG, YUNG JOON;LIM, DONG HYOUK;SEO, YOUNG BIN;CHO, YOO KUN;YI, SANG HO;LEE, JAE HEUNG;KIM, SEOK HYUN;OH, JIN HA