...- A [命令模板](https://docs.zk.email/email-tx-builder/architecture/command-templates) 验证
机制，以确保电子邮件命令与预期格式和参数匹配。
- A [零知识证明](https://docs.zk.email/architecture/zk-proofs#how-zk-email-uses-zero-knowledge-proofs) 验证
机制，以确...
...
---
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{
"Result": "Success"
}
hello_aptos/p...
... // 只要 Bank 合约有资金，就持续调用 withdraw
// and the attacker wants to withdraw (e.g., 1 ether per re-entry).
// 并且攻击者想要提款（例如，每次重入 1 以太币）。
if (address(bank).balance >= 1 ether) {
bank.withdraw(1 eth...