From c834cd4474d8019514586001633ceb0c4b2e06aa Mon Sep 17 00:00:00 2001
From: Fu Diwei <fudiwei@sina.com>
Date: Mon, 2 Aug 2021 16:37:04 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20=E5=AE=8C=E5=96=84=E6=96=87=E6=A1=A3?=
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 .../Advanced_EventDataSignatureVerification.md  | 17 +++++++++++++++++
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 create mode 100644 docs/WechatApi/Advanced_EventDataSignatureVerification.md

diff --git a/docs/WechatApi/Advanced_EventDataSignatureVerification.md b/docs/WechatApi/Advanced_EventDataSignatureVerification.md
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+## 如何验证回调通知事件签名？
+
+---
+
+> 请先自行阅读：
+>
+> [《微信官方文档 - 开始开发：接入指南》](https://developers.weixin.qq.com/doc/offiaccount/Basic_Information/Access_Overview.html)
+
+同样的，你既然可以利用本库提供的 `SHA1Utility` 工具类自行进行签名验证，也可以通过扩展方法实现：
+
+```csharp
+bool ret = client.VerifyEventSignature(
+    callbackTimestamp: "微信回调通知中的 timestamp 字段",
+    callbackNonce: "微信回调通知中的 nonce 字段",
+    callbackSignature: "微信回调通知中的 signature 字段"
+);
+```