发明名称 |
File access system for efficiently accessing a file having encrypted data within a storage device |
摘要 |
<p>A file access system includes a file opening unit (5) which opens a given file within a storage device (10) when a file opening request is issued by an application program (1). A determining unit (6, S44) determines whether a given file within the storage device has encrypted data when a reading request is issued by the application program. When the given file is determined as having the encrypted data, a reading unit (6, S50, S51) receives a fixed length of the encrypted data from the given file and generates a block of decrypted data of the same size as the fixed length by performing a decryption wherein a position of the fixed length of the decrypted data is determined by a position indicated by the reading request. <IMAGE></p> |
申请公布号 |
EP0862124(A2) |
申请公布日期 |
1998.09.02 |
申请号 |
EP19980301387 |
申请日期 |
1998.02.25 |
申请人 |
FUJITSU LIMITED |
发明人 |
SASAKI, TAKAAKI;YAMANAKA, YUSUKE |
分类号 |
G06F17/30;(IPC1-7):G06F17/30 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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