コーディングデバイス - Infineon Technologies AG

Title:

コーディングデバイス

Document Type and Number:

Japanese Patent JP3715574

Kind Code:

B2

Abstract:

The coding device (ZA) comprises a data processing unit (1,1`) for performing cryptographic operations. A disconnecting unit (2) disengages an external data interface (IO) from an internal data interface (IB). Another interface (SV) supplies power to the coding device (ZA). A main clock signal (CLK1) is generated by a program oscillator (3) and a current profile (SP2) by another generator (4). The current profile generator (4), which switches a number of loads, comprises a further program oscillator (7) for generating an auxiliary clock signal (CLK2).

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Inventors:

Beckler, Gregor

Application Number:

JP2001535342A

Publication Date:

November 09, 2005

Filing Date:

October 26, 2000

Export Citation:

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Assignee:

Infineon Technologies AG

International Classes:

H04L9/10; G06F1/00; G06F21/55; G06K19/073; G09C1/00; H04L9/00; H04L9/06; H04L9/30; (IPC1-7): H04L9/10; G09C1/00

Domestic Patent References:

JP2199561A

Foreign References:

FR2776410A1

Other References:

Thomas S.Messerges,Ezzy A.Dabbish,Robert H.Sloan,“Investigations of Power Analysis on Smartcards”,USENIX Workshop on Smartcard Technology,The USENIX Association,1999年 5月11日

Attorney, Agent or Firm:

Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita

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