Title:
データ暗号化,復号化もしくは暗号化・復号化方法及び装置
Document Type and Number:
Japanese Patent JP4539646
Kind Code:
B2
Abstract:
To markedly reduce the risk that common key data will be stolen, in encrypted transmission of digital information data by adapting encryption and decryption with common key data.
An HD-SDI signal DHS is encrypted, corresponding to encryption/decryption common key data DEY for forming an encrypted HD-SDI signal DHSE. In addition, the encryption/decryption common key data DEY is encrypted by using a public key data DOY, to form encrypted encryption/decryption common key data DXY; and then the encrypted HD-SDI signal DHSE and the encrypted encryption/decryption common key data DXY are transmitted.
COPYRIGHT: (C)2007,JPO&INPIT
Inventors:
Tsutomu Shimosato
Yujiro Ito
Yujiro Ito
Application Number:
JP2006331115A
Publication Date:
September 08, 2010
Filing Date:
December 07, 2006
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04L9/08
Domestic Patent References:
| JP6129233A | ||||
| JP61173545A | ||||
| JP4211543A | ||||
| JP777933A | ||||
| JP2000112860A |
Other References:
Bruce Schneier,Applied Cryptography: Protocols, Algorithms, and Source Code in C,John Wiley & Sons, Inc,1996年,Second Edition,pages 48, 173
Attorney, Agent or Firm:
Shinto International Patent Office