New Secret Key Management Technology for Blockchains from Biometrics Fuzzy Signature
New Secret Key Management Technology for Blockchains from Biometrics Fuzzy Signature
复制标题
来自生物识别模糊签名的区块链新密钥管理技术
DOI：
10.1109/asiajcis50894.2020.00020
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
Naganuma Ken; Suzuki Takayuki; Yoshino Masayuki; Takahashi Kenta; Kaga Yosuke; Kunihiro Noboru
中科院分区：
文献类型：
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作者：
Uchida Masataka;Horii Naoki;Hasegawa Natsuki;Oyanagi Eri;Yano Hiromi;Iemitsu Motoyuki;髙田真吾;Naganuma Ken; Suzuki Takayuki; Yoshino Masayuki; Takahashi Kenta; Kaga Yosuke; Kunihiro Noboru
区块链技术作为金融等领域分散支付的创新系统正在引起人们的关注。另一方面，在去中心化的环境中，用于用户身份验证和数字签名的密钥的管理成为一个大问题，因为如果用户丢失了他/她的密钥，他/她也将丢失区块链上的资产。本文描述了区块链系统中的密钥管理问题，并提出了一种使用基于生物特征的数字签名方案的解决方案。在我们提出的系统中，每次都根据用户的生物特征信息生成用于数字签名的密钥，并在使用后立即从存储器中删除。因此，我们的区块链系统具有无需在整个系统中存储密钥的优点。结果，用户没有丢失密钥管理设备的风险，并且可以防止来自窃取秘密密钥的恶意软件的攻击。
Blockchain technology is attracting attention as an innovative system for decentralized payments in fields such as financial area. On the other hand, in a decentralized environment, management of a secret key used for user authentication and digital signature becomes a big issue because if a user loses his/her secret key, he/she will also lose assets on the blockchain. This paper describes the secret key management issues in blockchain systems and proposes a solution using a biometrics-based digital signature scheme. In our proposed system, a secret key to be used for digital signature is generated from the user's biometric information each time and immediately deleted from the memory after using it. Therefore, our blockchain system has the advantage that there is no need for storage for storing secret keys throughout the system. As a result, the user does not have a risk of losing the key management devices and can prevent attacks from malware that steals the secret key.