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How can Ethereum contract accounts prevent disclosure of their own information?
2022-02-03 20:53:26 【Q & A of Denglian community】
For example, there is a contract mapping State variables ,key It's the address ,value It's your message , Function access to get information mapping Variable , Send it to its own address , Can take out their own information .
The problem now is that the storage of contract accounts exists on each node , How to prevent malicious nodes from not calling functions , Get all... Directly from the storage of this contract account value Well ？
Take the answer 1：
If you want to save confidential data , Can store encrypted data （ The encrypted data is used as value）.
In addition, pay attention to ： Data in the contract , Whether visibility is common （public） It's still private （private）. From the perspective of data chain , It's all public . Private data in the contract , Even if there is no way to get... Directly through the access contract , But it can be obtained from the parsing block .
author[Q & A of Denglian community],Please bring the original link to reprint, thank you.
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