公开(公告)号：JP2000205892A

公开(公告)日：2000-07-28

申请号：JP2000000897

申请日：2000-01-06

Applicant: IBM

Inventor： TIMOTHY J CHEINAA ,  GREENGARD CLAUDE A ,  WILLIAM R PUURIIBURANKU ,  CHARLES P TORESE ,  CHAI W WOO

IPC: G01D1/00 ,  G06F21/06 ,  G06K19/00 ,  G06K19/07 ,  G06K19/073 ,  G06K19/10 ,  G06Q10/00 ,  G06Q50/00 ,  G07F9/02 ,  G07G1/00 ,  G06F17/60

Abstract: PROBLEM TO BE SOLVED: To provide accurate information of a product to resist an effort for concealing a symptom such as tampering (illegal tearing) or the like, by sensing data regarding a state of an environment of an object (product) by a sensor, encoding a signal from the sensor and recording the signal. SOLUTION: A smart card 101 mounted on a product is energized by a small power source such as a battery 102 or the like. In addition to constituents such as a memory 103, a processing unit 104, an encoding module 107 and the like, a sensor 105 for detecting a change of the product or an environment caused by tampering is provided. In the module 107, an encryptional algorithm such as, for example, Menezes, Oorschot or the like is used. The overall card 101 can be protected by a tamper-proof package 109. Recording data is encoded to provide a history of a physical event of the product. A person having a key can take out data by anyone, and can decide the state of the product.

公开(公告)号：JP2000215340A

公开(公告)日：2000-08-04

申请号：JP2000002463

申请日：2000-01-11

Applicant: IBM

Inventor： TIMOTHY J CHEINAA ,  GREENGARD CLAUDE A ,  CHARLES P TRESSE ,  CHAI W WOO

IPC: G06K19/00 ,  G06K17/00 ,  G06K19/07 ,  G06Q10/00 ,  G06Q50/00 ,  G07C5/08 ,  G08G1/123 ,  G06F17/60

Abstract: PROBLEM TO BE SOLVED: To make automatically verifiable that a vehicle has been concerned in a specified event by transmitting an inquiry signal when a monitor station detects that the vehicle is running at a violation speed and transmitting the signature information of the vehicle from a smart card to the monitor station when the inquiry signal is received. SOLUTION: When a violation speed of a vehicle is detected or the like, the event recorder of the monitor station on the side of road periodically transmits the inquiry signal. When the inquiry signal is received (300) and it is verified that signal is true, the smart card transmits the signature information of the vehicle to the monitor station (302). When a sensor detects sudden or rapid acceleration or deceleration generated during collision (304), the smart cards attached to the respective vehicles respectively start transmitting the signature information and start receiving the signature information of the other vehicle (308). Then, this information is stored in a memory (310).

公开(公告)号：JP2000224411A

公开(公告)日：2000-08-11

申请号：JP2000015753

申请日：2000-01-25

Applicant: IBM

Inventor： DAVID H JAMESON ,  CHARLES P TRESSER ,  CHAI W WOO ,  STEVEN R ABRAMS ,  SHUMUEL WINOGRAD

IPC: G09C1/00 ,  G06F1/00 ,  G06F11/00 ,  G06F11/10 ,  G06F12/14 ,  G06F21/00 ,  G06F21/24 ,  G06T1/00 ,  G11B20/00 ,  G11B20/18 ,  H03M13/01 ,  H04L9/30 ,  H04N1/32 ,  H04N1/387 ,  H04N7/08 ,  H04N7/081

Abstract: PROBLEM TO BE SOLVED: To recognize whether or not a recording object is true or whether or not it is performed by a true author or both of them by hiding an additional message inside an error correction code for the significant contents of a digital message. SOLUTION: In this method, all authentication data A201 are hidden in the error correction code(ECC) 210 used for performing recording. A code to be used for generating three sets (A, W and D) 205 can be based on ciphering 200 and authentication message A is turned to a coded message corresponding to a pair (W and D) instead of the general tacit relation of the authentication data A201 and an optional data set W202 and an auxiliary data set D203 to be recorded. The meaning of the recorded object is not influenced, a standard reader is not only detected but also not influenced and the truthfulness or propriety or both of recording is recognized.