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Merge pull request #810 from LingYe-WEB3/fix/53_ERC20Permit
Fix: lesson 53_ERC20Permit.Modify the content secp256k1 to keccak256
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53_ERC20Permit/readme.md

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@@ -46,7 +46,7 @@ EIP-2612 提出了 ERC20Permit,扩展了 ERC20 标准,添加了一个 `permi
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- `spender` 不能是零地址。
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- `deadline` 必须是未来的时间戳。
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- `v``r``s` 必须是 `owner` 对 EIP712 格式的函数参数的有效 `secp256k1` 签名。
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- `v``r``s` 必须是 `owner` 对 EIP712 格式的函数参数的有效 `keccak256` 签名。
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- 签名必须使用 `owner` 当前的 nonce。
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