Function authorize_once
pub comptime fn authorize_once(
f: FunctionDefinition,
from_arg_name: CtString,
nonce_arg_name: CtString,
)pub comptime fn authorize_once(
f: FunctionDefinition,
from_arg_name: CtString,
nonce_arg_name: CtString,
)
Private and public functions can require an authorization check to be performed before execution. This is typically the case when the function allows performing an action on behalf of someone who is not the caller. This macro injects the necessary code to perform the check via the authwit mechanism and additionally emit the authorization request as an offchain effect, so a user/wallet can verify what are they being asked to sign. This check also emits a nullifier with the provided nonce argument, so authorizations are valid once and only once, preventing replay attacks.