New Secure Approach to Backup Cryptocurrency Wallets
New Secure Approach to Backup Cryptocurrency Wallets
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DOI：
10.1109/globecom38437.2019.9014007
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发表时间：
2019-12
期刊：
影响因子：
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通讯作者：
Hossein Rezaeighaleh;C. Zou
中科院分区：
文献类型：
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作者：
Hossein Rezaeighaleh;C. Zou
比特币和其他加密货币已经变得流行，并促使更多的黑客窃取数字资金。用户使用加密钱包保护他们的私钥，以确保他们的资金安全免受黑客攻击。虽然最安全的选择是硬件钱包，但它缺乏安全方便的备份和恢复过程。几乎所有现有的钱包都使用助记符来备份私钥，用户必须在一张纸上写下这些单词。这种方法不仅不方便，而且有问题，因为纸张可能丢失或被盗，导致黑客恢复密钥。在本文中，我们提出了一个新的数字方案，以安全地备份硬件钱包依赖于侧通道人类视觉验证，使显示屏上的硬件钱包。使用这种方法，即使通过不可信的终端（如智能手机），我们也可以安全地将私钥的根从一个硬件钱包传输到另一个钱包。在这个过程结束时，用户有两个具有相同私钥的硬件钱包，而她可以使用其中一个作为主钱包，另一个作为备份钱包。
Bitcoin and other cryptocurrencies have become popular and motivate more hackers to steal digital funds. Users protect their private keys using crypto wallets to keep their funds safe from hackers. While the most secure option is hardware wallet, it suffers from lack of a secure and convenient backup and recovery process. Almost all existing wallets use mnemonics to back up the private keys, and a user must write down these words on a piece of paper. This approach is not only inconvenient but also problematic since the paper could be lost or stolen, resulting in a hacker recovering the keys. In this paper, we propose a new digital scheme to securely back up a hardware wallet relying on the side-channel human visual verification enabled by display screen on a hardware wallet. Using this method, we transfer the root of private keys from one hardware wallet to another wallet securely even via an untrusted terminal, such as a smartphone. At the end of this process, the user has two hardware wallets with the same private keys while she may use one of them as the main wallet and another one as a backup wallet.