FI19992778A - Treatment of a secret key - Google Patents

Treatment of a secret key

Info

Publication number
FI19992778A
FI19992778A FI992778A FI19992778A FI19992778A FI 19992778 A FI19992778 A FI 19992778A FI 992778 A FI992778 A FI 992778A FI 19992778 A FI19992778 A FI 19992778A FI 19992778 A FI19992778 A FI 19992778A
Authority
FI
Finland
Prior art keywords
secret key
processor
memory
order
calculating
Prior art date
Application number
FI992778A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI107769B (en
Inventor
Lauri Paatero
Teemu Asikainen
Janne Rantala
Original Assignee
Setec Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Setec Oy filed Critical Setec Oy
Priority to FI992778A priority Critical patent/FI107769B/en
Priority to DE60029134T priority patent/DE60029134T2/en
Priority to AT00987532T priority patent/ATE332043T1/en
Priority to AU23781/01A priority patent/AU2378101A/en
Priority to EP00987532A priority patent/EP1243093B1/en
Priority to PCT/FI2000/001112 priority patent/WO2001048963A1/en
Priority to CNB008176302A priority patent/CN1311657C/en
Publication of FI19992778A publication Critical patent/FI19992778A/en
Application granted granted Critical
Publication of FI107769B publication Critical patent/FI107769B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The present invention relates to a device comprising: a processor (1) controlling the operation of the device, a memory (M) connected to the processor (1) through a bus (5), and an auxiliary processor (9) connected to the processor (1) and the memory (M) through said bus (5) in order to produce a response on the basis of a secret key (K). In order to make it even more difficult for an external attacker to find out the secret key, said secret key (K) is stored encoded (K') in said memory (M). Calculating means (8) of the auxiliary processor (9) comprise a decoding function for calculating the secret key (K) from the encoded secret key (K') in a data register (R2), and a calculating function of the calculating means (8) retrieves the decoded secret key (K) in order to produce said response.
FI992778A 1999-12-23 1999-12-23 Handling of the secret key FI107769B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI992778A FI107769B (en) 1999-12-23 1999-12-23 Handling of the secret key
DE60029134T DE60029134T2 (en) 1999-12-23 2000-12-19 MANAGEMENT OF A SECRET KEY
AT00987532T ATE332043T1 (en) 1999-12-23 2000-12-19 MANAGEMENT OF A SECRET KEY
AU23781/01A AU2378101A (en) 1999-12-23 2000-12-19 Handling a secret key
EP00987532A EP1243093B1 (en) 1999-12-23 2000-12-19 Handling a secret key
PCT/FI2000/001112 WO2001048963A1 (en) 1999-12-23 2000-12-19 Handling a secret key
CNB008176302A CN1311657C (en) 1999-12-23 2000-12-19 Handling secret key

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI992778A FI107769B (en) 1999-12-23 1999-12-23 Handling of the secret key
FI992778 1999-12-23

Publications (2)

Publication Number Publication Date
FI19992778A true FI19992778A (en) 2001-06-24
FI107769B FI107769B (en) 2001-09-28

Family

ID=8555808

Family Applications (1)

Application Number Title Priority Date Filing Date
FI992778A FI107769B (en) 1999-12-23 1999-12-23 Handling of the secret key

Country Status (7)

Country Link
EP (1) EP1243093B1 (en)
CN (1) CN1311657C (en)
AT (1) ATE332043T1 (en)
AU (1) AU2378101A (en)
DE (1) DE60029134T2 (en)
FI (1) FI107769B (en)
WO (1) WO2001048963A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828781B1 (en) * 2001-08-14 2003-11-14 At Sky SYSTEM FOR SECURING THE DESGROWING OF DIGITAL DATA ON AN OPEN CUSTOMER STATION

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613565B1 (en) * 1987-04-03 1989-06-23 Bull Cps METHOD FOR ROUTING SECRET KEYS TO SECURITY MODULES AND USER CARDS, IN AN INFORMATION PROCESSING NETWORK
CA1321649C (en) * 1988-05-19 1993-08-24 Jeffrey R. Austin Method and system for authentication
EP0566811A1 (en) * 1992-04-23 1993-10-27 International Business Machines Corporation Authentication method and system with a smartcard
US5267314A (en) * 1992-11-17 1993-11-30 Leon Stambler Secure transaction system and method utilized therein
WO1995016238A1 (en) * 1993-12-06 1995-06-15 Telequip Corporation Secure computer memory card
FR2717286B1 (en) * 1994-03-09 1996-04-05 Bull Cp8 Method and device for authenticating a data medium intended to allow a transaction or access to a service or a place, and corresponding medium.
US5999629A (en) * 1995-10-31 1999-12-07 Lucent Technologies Inc. Data encryption security module
WO1999046881A1 (en) * 1998-03-11 1999-09-16 Guardtech Technologies Ltd. Transaction card security system

Also Published As

Publication number Publication date
CN1311657C (en) 2007-04-18
DE60029134T2 (en) 2007-05-16
WO2001048963A1 (en) 2001-07-05
CN1413397A (en) 2003-04-23
EP1243093A1 (en) 2002-09-25
EP1243093B1 (en) 2006-06-28
DE60029134D1 (en) 2006-08-10
ATE332043T1 (en) 2006-07-15
FI107769B (en) 2001-09-28
AU2378101A (en) 2001-07-09

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Legal Events

Date Code Title Description
PC Transfer of assignment of patent

Owner name: GEMALTO OY