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Decentralized Hierarchical Authorized Payment with Online Wallet for Blockchain

机译:使用在线钱包进行区块链的分散式分层授权付款

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In Bitcoin, the knowledge of private key equals to the ownership of bitcoin, which occurs two problems: the first problem is that the private key must be kept properly, and the second one is that once the private key is given, it can't be taken back, hence the bitcoin system can only implement the transfer function. In this paper, we first propose a new digital signature algorithm and use it to design an online wallet, which can help the user derive the signature without obtaining the user's private key. Secondly, using our proposed online wallet, we extend the application of private key so that the cryptocurrency system can implement the authorization function. In more detail, we define a new primitive that we call decentralized hierarchical authorized payment scheme (DHAP scheme). We next propose a concrete instantiation and prove its correctness. Finally, we analyze the security and usability of our scheme. For security, we prove our scheme to be secure under the random oracle model. For usability, we examine its performance and compare it with bitcoin's performance.
机译:在比特币中,私钥的知识等同于比特币的所有权,这会发生两个问题:第一个问题是必须正确保存私钥,第二个问题是一旦给出私钥就不能因此,比特币系统只能实现转移功能。在本文中,我们首先提出了一种新的数字签名算法,并将其用于设计在线钱包,该算法可以帮助用户获得签名而无需获取用户的私钥。其次,使用我们提出的在线钱包,我们扩展了私钥的应用范围,以便加密货币系统可以实现授权功能。更详细地讲,我们定义了一个新的原语,称为分散式分层授权付款方案(DHAP方案)。接下来,我们提出一个具体的实例并证明其正确性。最后,我们分析了该方案的安全性和可用性。为了安全起见,我们证明了我们的方案在随机预言机模型下是安全的。为了可用性,我们检查其性能并将其与比特币的性能进行比较。

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