Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
公開鍵の信頼性を証明するための装置、方法及びそのためのプログラム
Document Type and Number:
Japanese Patent JP6634171
Kind Code:
B2
Abstract:
Proving reliability of a second public key of a second key pair generated in association with a first key pair. A generator 210 calculates and stores x·H(n) which is proof data and ax·H(n), when the second public key ax·g1 which is of the second key pair is generated (S301). The generator 210 provides the calculated proof data to a receiving apparatus 220 (S302) which has received the proof data, transmits a proof request to the proving apparatus 230 for requesting a proof that the second public key ax·g1 is generated by an owner of the first public key a·g1 (S303). In response to the proof request, the proving apparatus 230 verifies the proof data by calculating a verification formula for the proof data (S304). The proving apparatus 230 transmits the verification result as a response to the proof request from the receiving apparatus 220 (S305).

Inventors:
Komiyama Mineshi
Application Number:
JP2019007394A
Publication Date:
January 22, 2020
Filing Date:
January 19, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Bitflyer blockchain Co., Ltd.
International Classes:
H04L9/32; G09C1/00; H04L9/08
Domestic Patent References:
JP2017126943A
Other References:
加藤 陽介 ほか,アドホックネットワークにおける証明書不要な公開鍵暗号の実装,2010年 暗号と情報セキュリティシンポジウム SCIS2010 [CD-ROM],日本,2010年 暗号と情報セキュリティシンポジウム実行,2010年 1月19日,2E3-3,p.1-6
大竹 剛 ほか,任意の数の鍵発行機関が存在可能な属性ベース暗号,電子情報通信学会技術研究報告,日本,社団法人電子情報通信学会,2010年 6月24日,Vol.110 No.114,p.153-158
Attorney, Agent or Firm:
Hiroshi Otani