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以太坊如何在私钥泄漏的情况下重新加密敏感数据

[英]Ethereum how to re-encrypt the sensitive data if the private key leaks

原文 2018-07-06 06:34:46 2 1 ethereum

Assuming some sensitive data is encrypted by the public key and stored on the ethereum network. 假设一些敏感数据已通过公钥加密并存储在以太坊网络中。

My question is: If the private key leaks, can we re-encrypt the data so that the data cannot be decrypted by the leaked private key? 我的问题是：如果私钥泄漏，我们可以重新加密数据，以便数据不能被泄漏的私钥解密吗？

Since the immutability of the blockchain, I thinks it's impossbile, right? 由于区块链的不可变性，我认为这是不可能的，对吧？

Are there any other good solutions for storing the sensitive data? 还有其他好的解决方案来存储敏感数据吗？

1 个解决方案

If the private key leaks, can we re-encrypt the data so that the data cannot be decrypted by the leaked private key? 如果私钥泄漏，我们是否可以重新加密数据，以使数据不能被泄漏的私钥解密？

You could reencrypt the data with a new private key, and write that new encrypted data to the blockchain. 您可以使用新的私钥重新加密数据，然后将新的加密数据写入区块链。 However, since ethereum maintains a complete historical state, your previous version of the data will still be visible in the past blocks, allowing anyone to decrypt it. 但是，由于以太坊保持完整的历史状态，因此您以前的数据版本在过去的块中仍然可见，从而允许任何人对其进行解密。

Are there any other good solutions for storing the sensitive data? 还有其他好的解决方案来存储敏感数据吗？

Encrypt and store the data off chain, and just publish a hash of the data to the chain for integrity/security checks/proof of time. 离线加密和存储数据，只需将数据的哈希值发布到链中以进行完整性/安全性检查/时间证明。