Title:
電子メモリ改竄防止システム
Document Type and Number:
Japanese Patent JP4955818
Kind Code:
B2
Abstract:
Methods and apparatus for preventing tampering with memory in an electronic device, such as a cellular telephone, are disclosed. An electronic device having a memory and a processing means contains logic that is used to perform a one-way hash calculation on the device's memory contents whereby an audit hash value, or signature, of such contents is derived. The audit hash value is compared to a an authenticated valid hash value derived from authentic memory contents. A difference between the audit and valid hash values can be indicative of memory tampering. In accordance with another aspect of the invention, electronic device memory contents can be updated by a data transfer device that is authenticated before being permitted access to the memory contents. Data transfer device authentication involves the use of a public/private key encryption scheme. When the data transfer device interfaces with a electronic device and requests memory access, a process to authenticate the data transfer device is initiated.
Inventors:
Osbourne, William, Earl.
Application Number:
JP2011007295A
Publication Date:
June 20, 2012
Filing Date:
January 17, 2011
Export Citation:
Assignee:
ERICSSON INC.
International Classes:
G06F12/14; G06F1/00; G06F21/00; G06F21/24; G09C1/00; H04L9/32; H04M1/67; H04W88/02
Domestic Patent References:
| JP5002535A | ||||
| JP5053919A |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Youhei Kawabata
Yasuhiro Sakata
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Youhei Kawabata
Yasuhiro Sakata