A Secure and Practical Signature Scheme for Blockchain Based on Biometrics
A Secure and Practical Signature Scheme for Blockchain Based on Biometrics
复制标题
DOI：
10.1007/978-3-319-72359-4_55
复制
发表时间：
2017-12
期刊：
影响因子：
--
通讯作者：
Yosuke Kaga;Masakazu Fujio;Ken Naganuma;Kenta Takahashi;Takao Murakami;Tetsushi Ohki;M. Nishigaki
中科院分区：
文献类型：
--
作者：
Yosuke Kaga;Masakazu Fujio;Ken Naganuma;Kenta Takahashi;Takao Murakami;Tetsushi Ohki;M. Nishigaki
在区块链系统中，通过添加数字签名来保护区块链交易免受伪造。通过数字签名验证，我们可以确认交易的创建者拥有正确的私钥。然而，在某些关键领域，我们需要证明交易的创建者是正确的用户。在这种情况下，传统的数字签名验证不能实现足够的安全性。此外，还提出了一种结合区块链和物联网的系统。然而，由于该系统中的物联网设备自动生成区块链交易，因此可靠的创建者验证是一个具有挑战性的问题。为了在物联网区块链系统中实现可靠的创建者验证，我们提出了一种新的区块链签名方案。本文的主要工作如下：（1）提出了一个新的安全实用的数字签名方案。(2)我们在一个物联网区块链系统中实现了我们的签名方案，并对方案的安全性和实用性进行了评估。在我们的方案中，通过使用用户的生物特征信息作为私钥，我们证明了交易的创建者在交易验证中具有正确的生物特征信息。由于指纹、面部、手指静脉等生物特征信息是唯一的，这意味着交易的创建者是适当的用户。此外，所提出的签名方案产生一个短期的私钥，并利用它来创建交易。通过使用该方案，IoT设备可以自动生成新的事务。最后，对方案的安全性和实用性进行了评估.
In a blockchain system, a blockchain transaction is protected against forgery by adding a digital signature. By digital signature verification, we can confirm that a creator of a transaction has a correct private key. However, in some critical fields, we need to prove that a creator of a transaction is a proper user. In such a case, the conventional digital signature verification cannot achieve sufficient security. Furthermore, a system that combines blockchain and IoT has been proposed. However, since an IoT device in this system automatically generates a blockchain transaction, reliable creator verification is challenging issue. To achieve reliable creator verification in the IoT blockchain system, we propose a new signature scheme for blockchain. Our contributions are as follows: (1) We propose a new secure and practical signature scheme. (2) We implement our signature scheme for an IoT blockchain system and evaluate the security and the practicality of our scheme.In our scheme, by using user’s biometric information as a private key, we prove that a creator of a transaction has a correct biometric information in the transaction verification. Since biometric information such as fingerprint, face, finger vein and so on is unique, this means that a creator of a transaction is a proper user. Moreover, the proposed signature scheme generates a short-term private key and utilizes it for creating transactions. By using this scheme, IoT device can automatically generate a new transaction. Finally, we evaluate security and practicality of the proposed scheme.