是否可以仅适用于合同所有者可用的结构的某些字段？
例如，给定以下结构，我希望某些字段仅适用于合同所有者，
struct Participant{
address participantAddress; // can be seen by anyone
string team; // can be seen by anyone
string personalDescription; // can be seen by anyone
string secret // can be seen only by contract owner
}
// Mapping each participant to an uint id
mapping(address=>Participant) public participantsMapping;
换句话说，检查参与者映射的人可以
从我所知道的 东西中看到除秘密的一个字段（只能由所有者看到） ，“私有”关键字不隐藏任何数据，它只是代码级规范符。
有功能的修饰符，但是它们也为结构中的字段工作吗？ 如果没有，如何实现？
modifier onlyOwner() {
require(msg.sender==ownerAddress,
"Visible only by owner");
_;
}
For example, given the following structure, I want some fields to be visible only for the contract owner
struct Participant{
address participantAddress; // can be seen by anyone
string team; // can be seen by anyone
string personalDescription; // can be seen by anyone
string secret // can be seen only by contract owner
}
// Mapping each participant to an uint id
mapping(address=>Participant) public participantsMapping;
In other words, someone inspecting the participantsMapping can see all the fields EXCEPT the secret one (which can only be seen by owner)
From what I know, the "private" keyword doesn't hide any data, it's only a code-level specifier.
There are modifiers for function, but do they work for fields in a structure too? If not, how can it be achieved?
modifier onlyOwner() {
require(msg.sender==ownerAddress,
"Visible only by owner");
_;
}
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否。在链上存储私人数据是不可能的。
可以加密数据，以便只有秘密钥匙的人才能访问它。请参阅 https://docs.metamask.io/guide/guide/rpc-api/rpc-api/rpc-api 。 .io/guide/rpc-api.html＃加密例如用法。
No. Storing private data on-chain is impossible.
It's possible to encrypt the data, so that only the person with the secret key can access it. See https://docs.metamask.io/guide/rpc-api.html#example-4 and https://docs.metamask.io/guide/rpc-api.html#encrypting for example usage.