公开(公告)号：US08117377B2

公开(公告)日：2012-02-14

申请号：US12256331

申请日：2008-10-22

申请人： Seungmin Park ,  Jaemyoung Kim ,  Yungjoon Jung ,  Donghyouk Lim ,  Youngbin Seo ,  Yookun Cho ,  Sangho Yi ,  Jaeheung Lee ,  Seokhyun Kim ,  Jinha Oh

发明人： Seungmin Park ,  Jaemyoung Kim ,  Yungjoon Jung ,  Donghyouk Lim ,  Youngbin Seo ,  Yookun Cho ,  Sangho Yi ,  Jaeheung Lee ,  Seokhyun Kim ,  Jinha Oh

IPC分类号： G06F12/00

CPC分类号： G06F12/0246 ,  G06F17/30117 ,  G06F17/30218 ,  G06F21/6218 ,  G06F21/79 ,  G06F2212/1052 ,  G06F2212/7209 ,  G06F2221/2143 ,  G06F2221/2145

摘要： Disclosed is a flash memory device having a secure flash file deletion function and a method for securely deleting a flash file. Data and object headers as actual contents of the flash file are separately stored in data blocks and header blocks. At this time, the data is encrypted and stored, and a decryption key is included in an object header and stored in a header block. When the flash file is deleted, the object header is deleted by searching the header block where the object header including the decryption key is stored. In order to search the header block, a binary tree structure is used in which a terminal node indicates an LSB of a file ID. Disclosed may be applied to an embedded system where a flash memory is used as a storage medium. In particular, disclosed is suitable for a NAND flash memory device.

摘要翻译： 公开了一种具有安全闪存文件删除功能的闪存设备和用于安全地删除闪存文件的方法。 作为闪存文件的实际内容的数据和对象标题被分别存储在数据块和标题块中。 此时，数据被加密和存储，并且解密密钥被包括在对象标题中并存储在标题块中。 当闪存文件被删除时，通过搜索存储包括解密密钥的对象标题的标题块来删除对象标题。 为了搜索标题块，使用二叉树结构，其中终端节点指示文件ID的LSB。 公开了可以将闪存用作存储介质的嵌入式系统。 特别地，所公开的适用于NAND闪存器件。

公开(公告)号：US20090172265A1

公开(公告)日：2009-07-02

申请号：US12256331

申请日：2008-10-22

申请人： Seungmin Park ,  Jaemyoung Kim ,  Yungjoon Jung ,  Donghyouk Lim ,  Youngbin Seo ,  Yookun Cho ,  Sangho Yi ,  Jaeheung Lee ,  Seokhyun Kim ,  Jinha Oh

发明人： Seungmin Park ,  Jaemyoung Kim ,  Yungjoon Jung ,  Donghyouk Lim ,  Youngbin Seo ,  Yookun Cho ,  Sangho Yi ,  Jaeheung Lee ,  Seokhyun Kim ,  Jinha Oh

IPC分类号： G06F12/00 ,  G06F12/16 ,  G06F12/14 ,  G06F12/02 ,  G06F17/30

CPC分类号： G06F12/0246 ,  G06F17/30117 ,  G06F17/30218 ,  G06F21/6218 ,  G06F21/79 ,  G06F2212/1052 ,  G06F2212/7209 ,  G06F2221/2143 ,  G06F2221/2145

摘要： Disclosed is a flash memory device having a secure flash file deletion function and a method for securely deleting a flash file. Data and object headers as actual contents of the flash file are separately stored in data blocks and header blocks. At this time, the data is encrypted and stored, and a decryption key is included in an object header and stored in a header block. When the flash file is deleted, the object header is deleted by searching the header block where the object header including the decryption key is stored. In order to search the header block, a binary tree structure is used in which a terminal node indicates an LSB of a file ID. Disclosed may be applied to an embedded system where a flash memory is used as a storage medium. In particular, disclosed is suitable for a NAND flash memory device.

摘要翻译： 公开了一种具有安全闪存文件删除功能的闪存设备和用于安全地删除闪存文件的方法。 作为闪存文件的实际内容的数据和对象标题被分别存储在数据块和标题块中。 此时，数据被加密和存储，并且解密密钥被包括在对象标题中并存储在标题块中。 当闪存文件被删除时，通过搜索存储包括解密密钥的对象标题的标题块来删除对象标题。 为了搜索标题块，使用二叉树结构，其中终端节点指示文件ID的LSB。 公开了可以将闪存用作存储介质的嵌入式系统。 特别地，所公开的适用于NAND闪存器件。