Title:
安全なソフトウェアの更新のためのシステム及び方法
Document Type and Number:
Japanese Patent JP2014505318
Kind Code:
A
Abstract:
A secure software update provides an update utility with an update definition, a private encryption key and a public signature key to a target device. A software update package is prepared on portable media that includes an executable update program, a checksum for the program that is encrypted with a symmetrical key, an encrypted symmetrical key that is encrypted with a public encryption key and a digital signature prepared with a private signature key. The update process authenticates the digital signature, decrypts the symmetrical key using the private encryption key, and decrypts the checksum using the symmetrical key. A new checksum is generated for the executable update program and compared to the decrypted checksum. If inconsistencies are detected during the update process, the process is terminated. Otherwise, the software update can be installed with a relatively high degree of assurance against corruption, viruses and third party interference.
Inventors:
Abraham, Westin
Mirror, kelly
Mirror, kelly
Application Number:
JP2013553630A
Publication Date:
February 27, 2014
Filing Date:
February 13, 2012
Export Citation:
Assignee:
SIEMENS HEALTHCARE DIAGNOSTICS INC.
International Classes:
G06F21/64; G06F21/57
Domestic Patent References:
| JP2009124520A | 2009-06-04 | |||
| JP2004288074A | 2004-10-14 | |||
| JP2001312415A | 2001-11-09 | |||
| JP2008165593A | 2008-07-17 | |||
| JP2009020697A | 2009-01-29 |
Attorney, Agent or Firm:
Patent business corporation Tsukuni
Hajime Tsukuni
Yasuo Yanagibashi
Satoko Ito
Keiko Ozawa
Toshio Miyake
Yasuhiro Oguni
Yoko Tanaka
Yoshinori Ikukawa
Akio Shibata
Hajime Tsukuni
Yasuo Yanagibashi
Satoko Ito
Keiko Ozawa
Toshio Miyake
Yasuhiro Oguni
Yoko Tanaka
Yoshinori Ikukawa
Akio Shibata