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1. (US20130156195) METHOD OF OBTAINING A MAIN KEY FROM A MEMORY DEVICE, METHOD OF GENERATING AUTHENTICATION INFORMATION FOR A MEMORY DEVICE, AN EXTERNAL DEVICE AND SYSTEM ICLUDING THE EXTERNAL DEVICE

官庁 : アメリカ合衆国
出願番号: 13677853 出願日: 15.11.2012
公開番号: 20130156195 公開日: 20.06.2013
公報種別: A1
IPC:
H04L 9/08
H 電気
04
電気通信技術
L
デジタル情報の伝送,例.電信通信
9
秘密または安全な通信のための配置
06
シフトレジスタまたはメモリを用いるブロック暗号化装置,例.D.E.Sシステム
08
キーの分配
CPC:
H04L 9/08
出願人: LEE Jae-Bum
JANG Hyoung-Suk
KIM Min-Kwon
KIM Seok-Heon
発明者: LEE Jae-Bum
JANG Hyoung-Suk
KIM Min-Kwon
KIM Seok-Heon
優先権情報: 10-2011-0136797 16.12.2011 KR
発明の名称: (EN) METHOD OF OBTAINING A MAIN KEY FROM A MEMORY DEVICE, METHOD OF GENERATING AUTHENTICATION INFORMATION FOR A MEMORY DEVICE, AN EXTERNAL DEVICE AND SYSTEM ICLUDING THE EXTERNAL DEVICE
要約: front page image
(EN)

In one embodiment, the method includes obtaining, at the external device, an encrypted main key and an encrypted first decryption key from the memory device. The encrypted first decryption key is an encrypted version of a first decryption key. The encrypted main key is an encrypted version of the main key. The external device is unable to read the main key from the memory device. The method further includes decrypting, at the external device, the encrypted first decryption key using a second decryption key to obtain the first decryption key; and decrypting, at the external device, the encrypted main key of the memory device using the first decryption key to obtain the main key.


Also published as:
JP2013127791US20130159733CN103164666