Title:
長期署名用サーバ
Document Type and Number:
Japanese Patent JP5648247
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To allow for verification of non-tampering, shooting date and time, and shooting location of image data captured by means of a portable terminal.SOLUTION: When shooting a subject by means of a portable terminal 6, the portable terminal 6 generates and stores image data of the subject, and then transmits image GPS information to a base station server 5. The base station server 5 checks whether or not the shooting date and time, and shooting location out of the image GPS information are correct, and transmits the image GPS information and a public key certificate to a long-term signature server 3. Upon receiving the image GPS information and a public key certificate, the long-term signature server 3 generates XAdES data before signature for generating ES by using them and transmits the XAdES data before signature to the base station server 5. The base station server 5 signs that data electronically by a secret key, and transmits an electronic signature value to the long-term signature server 3. The long-term signature server 3 completes ES-A(1 st) and sends the ES-A(1 st) to the portable terminal 6.
Inventors:
村尾 進一
上畑 正和
柴田 孝一
上畑 正和
柴田 孝一
Application Number:
JP2013266261A
Publication Date:
January 07, 2015
Filing Date:
December 25, 2013
Export Citation:
Assignee:
セイコーインスツル株式会社
International Classes:
H04L9/32; G06F21/64
Attorney, Agent or Firm:
Noriaki Uchino
Nobuyuki Kimura
Mountain stream 徹
Kawai 隆
Hitoshi Nakano
Nobuyuki Kimura
Mountain stream 徹
Kawai 隆
Hitoshi Nakano