Invention Grant
US07734598B2 Computer-readable recording medium having recorded hash-value generation program, computer-readable recording medium having recorded storage management program, and storage system
有权
具有记录的散列值生成程序的计算机可读记录介质，具有记录存储管理程序的计算机可读记录介质和存储系统
- Patent Title: Computer-readable recording medium having recorded hash-value generation program, computer-readable recording medium having recorded storage management program, and storage system
- Patent Title (中): 具有记录的散列值生成程序的计算机可读记录介质，具有记录存储管理程序的计算机可读记录介质和存储系统
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Application No.: US11497297Application Date: 2006-08-02
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Publication No.: US07734598B2Publication Date: 2010-06-08
- Inventor: Yasuo Noguchi , Kazutaka Ogiwara , Masahisa Tamura , Yoshihiro Tsuchiya , Tetsutaro Maruyama , Riichiro Take
- Applicant: Yasuo Noguchi , Kazutaka Ogiwara , Masahisa Tamura , Yoshihiro Tsuchiya , Tetsutaro Maruyama , Riichiro Take
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Fujitsu Patent Center
- Priority: JP2006-084490 20060327
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F17/00
Abstract:
A computer-readable recording medium having recorded a hash-value generation program for calculating a hash value within a shorter period of processing time. When a target disk is specified for hash value calculation, a segment division block divides the target disk into fixed-length segments. A first hash-value calculation block applies a one-way hash function to all data in each segment to calculate a per-segment hash value. A second hash-value calculation block arranges the per-segment hash values in a segment order corresponding to the order of the data stored on the target disk and applies the one-way hash function again to the arranged per-segment hash values to calculate a total hash value. The hash value calculated in this manner is defined as a hash value of the target disk.
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