DATA PROCESSING METHOD, ITS PROGRAM, AND ITS DEVICE

Title:

DATA PROCESSING METHOD, ITS PROGRAM, AND ITS DEVICE

Document Type and Number:

WIPO Patent Application WO/2004/028072

Kind Code:

A1

Abstract:

Data processing devices (302, 303) authenticates each other using first and second authentication key data sets (ST91). If the two-way authentication is successful, the data processing device (302) encrypts predetermined data using encryption key data and outputs the encrypted data to the data processing device (303) (ST93, ST94). The data processing device (303) decrypts the encrypted data using decryption key data (ST96), judges if the decryption is successful, and validates the data (ST97, ST98)

Inventors:

OMORI KAZUO (JP)
HONJO AKIRA (JP)
SUEYOSHI MASAHIRO (JP)
HANAKI NAOFUMI (JP)
TATENO KEI (JP)

Application Number:

PCT/JP2003/011804

Publication Date:

April 01, 2004

Filing Date:

September 17, 2003

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Assignee:

SONY CORP (JP)
OMORI KAZUO (JP)
HONJO AKIRA (JP)
SUEYOSHI MASAHIRO (JP)
HANAKI NAOFUMI (JP)
TATENO KEI (JP)

International Classes:

G06F21/31; G06F21/32; G06F21/34; G06F21/44; H04L9/08; H04L9/10; H04L9/14; H04L9/32; H04L29/06; (IPC1-7): H04L9/08; H04L9/10; H04L9/32; G09C1/00

Domestic Patent References:

WO2002011363A1

2002-02-07

Foreign References:

JP2000332748A	2000-11-30
JP2002111658A	2002-04-12
JPH0787078A	1995-03-31
JPH10327142A	1998-12-08
JP2000332742A	2000-11-30
JPH08242224A	1996-09-17
US5371794A	1994-12-06

Other References:

MENEZES ET AL.: "Handbook of Applied Cryptography", 1997, CRC PRESS, article "Handbook of Applied Cryptography"
See also references of EP 1542389A4

Attorney, Agent or Firm:

Satoh, Takahisa (4F Miyaki Bldg., 4-2, Yanagibashi 2-chom, Taito-ku Tokyo, JP)

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