Title:
A scrambling device and an information processor
Document Type and Number:
Japanese Patent JP6089998
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To secure tamper resistance without spoiling convenience when executing encryption processing on the basis of a specified encryption algorithm.SOLUTION: A main program and an encryption processing subroutine are incorporated into an information processing apparatus 100 comprising a smartphone or the like, and a main device 110 and an encryption processing device 120 are configured respectively. At the main device 110, an encryption key K and code data F which are generated by referring to a random number table T on the basis of an algorithm specifier a, are prepared. When encryption processing is required, the main device 110 gives original data D to be a processing object, the encryption key K, and the code data F to the encryption processing device 120. The encryption processing device 120 refers to the random number table T, returns the given code data F to the algorithm specifier a, executes a designated encryption algorithm among a plurality of encryption algorithms A0-A(N-1), executes the encryption processing on the original data D by using the encryption key K, and returns the result to the main device 110 as processed data E.
Inventors:
Yoshihiko Yoshida
Kazuhiko Komiyama
Yoshihiro Yano
Kazuhiko Komiyama
Yoshihiro Yano
Application Number:
JP2013128791A
Publication Date:
March 08, 2017
Filing Date:
June 19, 2013
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
H04L9/14
Domestic Patent References:
| JP201295260A | ||||
| JP1024956A | ||||
| JP1212041A |
Attorney, Agent or Firm:
Hiroshi Shimura