COMMUNICATION DEVICE AND COMMUNICATION METHOD

Title:

COMMUNICATION DEVICE AND COMMUNICATION METHOD

Document Type and Number:

Japanese Patent JP2012186553

Kind Code:

A

Abstract:

To safely write an individual key into a communication device.

A debug unit writes a public key of a key issuance server input from outside and an initialization program into a storage unit (S502). An instruction execution unit reads out and executes the initialization program written into the storage unit (S503). A debug port nullification unit makes the debug unit nullified (S504). A public key encryption unit encrypts a random value generated by a random number generation unit after the debug unit was nullified by the public key in the storage unit. A transmission unit transmits the encrypted random number to the key issuance server (S507). A reception unit receives an individual key encrypted by use of the random number from the key issuance server (S508). An individual key write-in unit decrypts the encrypted individual key by use of the random number to obtain the individual key, and write the individual key into the storage unit (S510).

Inventors:

HASHIMOTO MIKIO
YAMANAKA SHINJI
KOMANO YUICHI
KATO HIROSHI
ISOZAKI HIROSHI

Application Number:

JP2011046757A

Publication Date:

September 27, 2012

Filing Date:

March 03, 2011

Export Citation:

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Assignee:

TOSHIBA CORP

International Classes:

H04L9/08

Domestic Patent References:

JP2005100378A	2005-04-14
JP2003317086A	2003-11-07
JP2006157336A	2006-06-15

Foreign References:

WO2006126686A1

2006-11-30

Attorney, Agent or Firm:

佐藤泰和
勝沼宏仁
川崎康
赤岡明
鈴木順生
関根毅

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