公开(公告)号：JP2005158043A

公开(公告)日：2005-06-16

申请号：JP2004308911

申请日：2004-10-22

Applicant: Microsoft Corp ,  マイクロソフト コーポレーション

Inventor： LEIS BENJAMIN A ,  CROSS DAVID B ,  BRYCE DUNCAN G ,  GU JIANRONG ,  NAGAR RAJEEV Y ,  FIELD SCOTT A

IPC: G06F12/00 ,  G06F12/08 ,  G06F12/14 ,  G06F21/00 ,  G06F21/24 ,  G09C1/00

CPC classification number: G06F12/145 ,  G06F21/62 ,  G06F21/6281 ,  G06F21/80 ,  G06F2221/2143

Abstract: PROBLEM TO BE SOLVED: To provide a mechanism that, when an operating system copies data from a memory page into a paging file on a disk in order to free up a space in a memory, protects paged data from unauthorized (or otherwise undesirable) observation by encrypting the copied data. SOLUTION: The data stored in the paging file are encrypted by a session key, and the session key is generated immediately after a machine in which the paging file exists is started. The session key, which is used both for the encryption and decryption of the paging file data, is stored in a volatile memory, so that the session key is not persisted across boots of the machine. Since the session key is not persisted across boots, old paging file data that have been stored prior to the most recent boot cannot be recovered in clear text, thereby protecting the data from observation. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种机制，当操作系统将数据从存储器页面复制到盘上的寻呼文件中以释放存储器中的空间时，保护分页数据免于未经授权（或以其他方式） 不希望的）观察，通过加密复制的数据。 解决方案：通过会话密钥对存储在寻呼文件中的数据进行加密，并且在开始分页文件的机器之后立即生成会话密钥。 用于分页文件数据的加密和解密的会话密钥存储在易失性存储器中，使得会话密钥在机器的引导之间不被持久化。 由于会话密钥不会在引导过程中持久存在，所以在最近启动之前存储的旧页面文件数据无法以明文形式恢复，从而保护数据免受观察。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2006222944A

公开(公告)日：2006-08-24

申请号：JP2006019145

申请日：2006-01-27

Applicant: MICROSOFT CORP

Inventor： CROSS DAVID B ,  BRYCE DUNCAN G ,  GU JIANRONG ,  YIU KELVIN SHEK ,  ENE-PIETROSANU MONICA I

IPC: H04L9/08

Abstract: PROBLEM TO BE SOLVED: To provide an encrypted list of previously used keys by systems and methods for managing multiple keys for file encryption and decryption. SOLUTION: The list itself may be encrypted using a current key. To decrypt files that are encrypted in one or more of the previous keys, the list can be decrypted and the appropriate previous key can be retrieved. T re-key files, an automated process can decrypt any files using previous keys and encrypt them using the current key. If a new current key is introduced, the prior current key can be used to decrypt the list of keys, the prior current key can be added to the list and the list can be re-encrypted using the new current key. COPYRIGHT: (C)2006,JPO&NCIPI

公开(公告)号：AT522877T

公开(公告)日：2011-09-15

申请号：AT98953167

申请日：1998-09-11

Applicant: MICROSOFT CORP

Inventor： BRUNDRETT PETER ,  GARG PRAERIT ,  GU JIANRONG ,  KELLY JAMES ,  KAPLAN KEITH ,  REICHEL ROBERT ,  ANDREW BRIAN ,  KIMURA GARY ,  MILLER THOMAS

IPC: G06F21/24 ,  G06F1/00 ,  G06F12/00 ,  G06F12/14 ,  G06F21/00 ,  G06F21/22 ,  G09C1/00