Apparatus method and computer readable storage medium with recorded program for managing files with alteration preventing/detecting functions
US6345360B1 · kind B1 · utility
11Cited by
30References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1998 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | May 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/64
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
By storing an authenticator created from a data file in a secure area usually unaccessible, the alteration of the data file can be detected. Furthermore, by designating the data file as a main-file and creating authenticators from various kinds of sub-files related to the main-file, the size of the secure area where the authenticators are stored, can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.