Title:
AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2012/172832
Kind Code:
A3
Abstract:
According to one embodiment, an authentication method between an authenticatee which stores key information having a data structure composed of a key transition record, secret information XY of a matrix form, and secret information XYE which is created by encrypting the secret information XY, and an authenticator which authenticates the authenticatee, includes selecting, by the authenticator, a record corresponding to a device index of the authenticator from the key information which is received from the authenticatee, and decrypting the record by a device key, thereby taking out a key transition, and executing, by the authenticator, a decryption process on the secret information XYE, which is received from the authenticatee, by using the corresponding key transition, and sharing the secret information XY.
Inventors:
NAGAI YUJI (JP)
KATO TAKU (JP)
MATSUSHITA TATSUYUKI (JP)
KATO TAKU (JP)
MATSUSHITA TATSUYUKI (JP)
Application Number:
PCT/JP2012/054500
Publication Date:
May 23, 2013
Filing Date:
February 17, 2012
Export Citation:
Assignee:
TOSHIBA KK (JP)
NAGAI YUJI (JP)
KATO TAKU (JP)
MATSUSHITA TATSUYUKI (JP)
NAGAI YUJI (JP)
KATO TAKU (JP)
MATSUSHITA TATSUYUKI (JP)
International Classes:
H04L9/08; H04L9/32
Foreign References:
| EP1061514A2 | 2000-12-20 |
Other References:
HENRI GILBERT ET AL: ": Increasing the Security and Efficiency of", 13 April 2008, ADVANCES IN CRYPTOLOGY Â EUROCRYPT 2008; [LECTURE NOTES IN COMPUTER SCIENCE], SPRINGER BERLIN HEIDELBERG, BERLIN, HEIDELBERG, PAGE(S) 361 - 378, ISBN: 978-3-540-78966-6, XP019088212
MENEZES A ET AL: "Handbook of Applied Cryptography KEY ESTABLISHMENT PROTOCOLS", 1 January 1997, HANDBOOK OF APPLIED CRYPTOGRAPHY; [CRC PRESS SERIES ON DISCRETE MATHEMATICES AND ITS APPLICATIONS], CRC PRESS SERIES ON DISCRETE MATHEMATICS AND ITS APPLICATIONS, BOCA RATON, FL, US, PAGE(S) 489 - 541, ISBN: 978-0-8493-8523-0, XP002304953
BENOIT CALMELS ET AL: "Low-Cost Cryptography for Privacy in RFID Systems", 1 January 2006, SMART CARD RESEARCH AND ADVANCED APPLICATIONS LECTURE NOTES IN COMPUTER SCIENCE;;LNCS, SPRINGER, BERLIN, DE, PAGE(S) 237 - 251, ISBN: 978-3-540-33311-1, XP019029959
MENEZES A ET AL: "Handbook of Applied Cryptography KEY ESTABLISHMENT PROTOCOLS", 1 January 1997, HANDBOOK OF APPLIED CRYPTOGRAPHY; [CRC PRESS SERIES ON DISCRETE MATHEMATICES AND ITS APPLICATIONS], CRC PRESS SERIES ON DISCRETE MATHEMATICS AND ITS APPLICATIONS, BOCA RATON, FL, US, PAGE(S) 489 - 541, ISBN: 978-0-8493-8523-0, XP002304953
BENOIT CALMELS ET AL: "Low-Cost Cryptography for Privacy in RFID Systems", 1 January 2006, SMART CARD RESEARCH AND ADVANCED APPLICATIONS LECTURE NOTES IN COMPUTER SCIENCE;;LNCS, SPRINGER, BERLIN, DE, PAGE(S) 237 - 251, ISBN: 978-3-540-33311-1, XP019029959
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (1-12-9 Toranomon, Minato-k, Tokyo 01, JP)
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