Can a resource account create and use another resource account?

[kshitijc1506]

Asked by jojothomas on Discord (#dev-discussion)

Can a resource account have a resources account?
Let say i publish with create_resource_account_and_publish, and inside my init module we i use account::create_resource_account(&signer, SEED).
Does it detect that it's a resource account that was used to publish it and just return the signer? Or does it create another resource account with the publishing resource account as the owner/creator/signer.

Keywords: resource account

[kshitijc1506]

Yes, a resource account can be used to create another resource account.

If you publish a module under a resource account (create_resource_account_and_publish(&signer, SEED)), and in that module's init_module you call create_resource_account(&signer, SEED), there is no logic that verifies that the origin signer reference is another resource account. You can see this here.

Essentially, create_resource_account(&signer, SEED) will create a new resource account, and the original resource account will be the owner. The signer_cap will be stored in the original resource account's Container resource. You can see that logic here.

[jojothomas1515]

Thanks for the answer.

Another question:

when publishing with create_resource_account_and_publish from aptos cli
and i want to get the signer_cap for resource account and save move it to the resource account,
i used the function bellow, and i am confused as to the meaning of source address.

resource_account::retrieve_resource_account_cap(signer, @source_addr)

is it:

• the address of the resource account publishing the module which i assume is the signer address?
• or the address of my account in used on the aptos cli?

[kshitijc1506]

It is the address of the account that owns the Container resource. This would be the account used to create the resource account (address of your account used on CLI).

Over here, note the use of borrow_global_mut<Container>(source_addr). This container is stored in the owner's account when a resource account is created.

The first parameter is a &signer reference to the resource account.