Title:
ENCRYPTION DEVICE, ENCRYPTION METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2010/038764
Kind Code:
A1
Abstract:
Provided are an encryption device, an encryption method and a program that enable the amount of encrypted data to be reduced without lowering the safety of the encrypted data. With the encryption device, character strings predicted to be used in succession with character strings to be kept private are preregistered as key words. When the type of confidential information is character information, the key words that have been preregistered are searched for within the character information, and only a prescribed number of characters used in succession with the searched key words are encrypted. For example, when the text string "Mr.," "Mrs.," or "Dear" has been registered as the key word, the two characters preceding the key word are encrypted.
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Inventors:
TSUCHIYA TOSHIKO (JP)
Application Number:
PCT/JP2009/067005
Publication Date:
April 08, 2010
Filing Date:
September 30, 2009
Export Citation:
Assignee:
ICON CORP (JP)
TSUCHIYA TOSHIKO (JP)
TSUCHIYA TOSHIKO (JP)
International Classes:
H04L9/36; G06F21/24; H04L9/08; H04L9/32
Domestic Patent References:
| WO2009144924A1 | 2009-12-03 |
Foreign References:
| JP2004287566A | 2004-10-14 | |||
| JPS63158663A | 1988-07-01 | |||
| JP2002149638A | 2002-05-24 |
Attorney, Agent or Firm:
PATENT RELATED CORPORATION IPS (JP)
Patent business corporation Eye P. S. (JP)
Patent business corporation Eye P. S. (JP)
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