How can I implement whitelist access in sui move?

Question

Im trying to set up access control in Sui Move similar to how its done in Ethereum Solidity. In Solidity, a contract ensures that only whitelisted addresses can call certain functions. You set up a whitelist and check against msg.sender during cross-contract interactions. How can I achieve similar functionality in Sui Move with package-to-package access control?

yhant3 · Accepted Answer

In Sui Move, you can achieve similar access control by minting a 'WhiteListCap' object for the entities that should have access. Here's how it works:

Define a struct for WhiteListCap that includes an UID field.
Create an 'AdminCap' that is required for minting new whitelist entries.
The admin can call a function to generate a WhiteListCap and transfer it to a specific address.
Function calls that should be restricted can require a WhiteListCap parameter to ensure only whitelisted entities can execute them .

However, revoking access in Sui Move might be tricky since the admin loses control over the WhiteListCap once transferred.

LargeCappWithTwo · Answer

If you’re working with smart contracts or packages that may need iterative updates, be aware that Sui Move packages are immutable. Ensure you implement upgrade-friendly code patterns, like managing object-level permissions rather than package-level, and consider using version-based access controls .

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How can I implement whitelist access in sui move?

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