Title:
UNAUTHORIZED PROCESSING JUDGMENT METHOD, DATA PROCESSING DEVICE, COMPUTER PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2004/077294
Kind Code:
A1
Abstract:
There are provided an unauthorized processing judgment method, a data processing device, a compute program, and a recording medium for reading out data from buffer memory in byte unit and successively analyzing what kind of instruction codes are contained in a plurality of instruction groups having different read out positions. Judgment is made that an instruction group contains an unauthorized code if the instruction group contains the int instruction, the immediate value has been pushed to the stack more than once, and the virtual stack contains a character code corresponding to “/”.
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Inventors:
SAITO KAZUNORI (JP)
Application Number:
PCT/JP2004/002310
Publication Date:
September 10, 2004
Filing Date:
February 26, 2004
Export Citation:
Assignee:
OSAKA IND PROMOTION ORGANISATI (JP)
SAITO KAZUNORI (JP)
SAITO KAZUNORI (JP)
International Classes:
G06F21/56; G06F11/00; G06F11/22; G06F11/30; G06F11/32; G06F11/34; G06F11/36; G06F12/14; G06F12/16; G06F15/18; G08B23/00; H04L9/32; (IPC1-7): G06F11/00
Foreign References:
| JPH01237834A | 1989-09-22 | |||
| JP2001344128A | 2001-12-14 | |||
| JPH11167487A | 1999-06-22 |
Other References:
EITARO SAITO: "2001 Nen han virus daizukan", NIKKEI NETWORK, no. 16, 22 July 2001 (2001-07-22), pages 59 - 85, XP002982548
Attorney, Agent or Firm:
Kohno, Takao (Tsuriganecho 2-chome Chuo-ku, Osaka-sh, Osaka 35, JP)
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