Title:
ブロックチェーン・ネットワーク及びそのための確定方法
Document Type and Number:
Japanese Patent JP7101031
Kind Code:
B2
Abstract:
The present invention simplifies the signature handling for a block for which consensus was formed in a blockchain network which requires signatures from a plurality of nodes to form consensus for the adoption of a block. After completion of the setup, a first node 110 sends a first message including a generated block to N nodes (S301). Each node evaluates the validity of the block on the basis of the rule for consensus formation (S302). If the block is valid, the node sends, to each node, a second message which includes a signature si, by a secret key share f(xi), with respect to a hash value h of the block for which consensus is to be formed (S303-1). After k signatures are collected at jth node, the node merges these signatures to generate a signature corresponding to a public key PK (S304). A block for which consensus is to be formed has a signature SK·h appended thereto and is added to the blockchain of each node (S306).
Inventors:
Minefumi Komiyama
Application Number:
JP2018077368A
Publication Date:
July 14, 2022
Filing Date:
April 13, 2018
Export Citation:
Assignee:
BitFlyer Blockchain Co., Ltd.
International Classes:
G09C1/00; H04L9/32
Foreign References:
| WO2017174141A1 |
Other References:
光成 滋生,BLS署名と秘密分散を組み合わせる,Qiita @herumi,[オンライン],2017年02月16日,,[検索日 2018.10.18]、インターネット
東角 芳樹 ほか,コンソーシアムチェーンにおける証明書管理に関する一考察,2017年 暗号と情報セキュリティシンポジウム(SCIS2017)予稿集 [USB],日本,2017年 暗号と情報セキュリティシンポジウム実行,2017年01月24日,1F2-3,p.1-4
DIKSHIT PRATYUSH; ET AL,EFFICIENT WEIGHTED THRESHOLD ECDSA FOR SECURING BITCOIN WALLET,2017 ISEA ASIA SECURITY AND PRIVACY (ISEASP),IEEE,2017年01月29日,PAGE(S):1 - 9,http://dx.doi.org/10.1109/ISEASP.2017.7976994
東角 芳樹 ほか,コンソーシアムチェーンにおける証明書管理に関する一考察,2017年 暗号と情報セキュリティシンポジウム(SCIS2017)予稿集 [USB],日本,2017年 暗号と情報セキュリティシンポジウム実行,2017年01月24日,1F2-3,p.1-4
DIKSHIT PRATYUSH; ET AL,EFFICIENT WEIGHTED THRESHOLD ECDSA FOR SECURING BITCOIN WALLET,2017 ISEA ASIA SECURITY AND PRIVACY (ISEASP),IEEE,2017年01月29日,PAGE(S):1 - 9,http://dx.doi.org/10.1109/ISEASP.2017.7976994
Attorney, Agent or Firm:
Hiroshi Otani