From a588417f32cda1d6b5489b876c7b2a03e7762669 Mon Sep 17 00:00:00 2001
From: Fu Diwei <fudiwei@sina.com>
Date: Mon, 2 Aug 2021 20:25:28 +0800
Subject: [PATCH] =?UTF-8?q?docs:=20=E5=AE=8C=E5=96=84=E6=96=87=E6=A1=A3?=
MIME-Version: 1.0
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---
 .../Advanced_EventDataSignatureVerification.md         | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/docs/WechatApi/Advanced_EventDataSignatureVerification.md b/docs/WechatApi/Advanced_EventDataSignatureVerification.md
index 97a09a58..70e8cf47 100644
--- a/docs/WechatApi/Advanced_EventDataSignatureVerification.md
+++ b/docs/WechatApi/Advanced_EventDataSignatureVerification.md
@@ -6,12 +6,18 @@
 >
 > [《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：
+同样的，你既然可以利用本库提供的 `SHA1Utility`、`WxBizMsgCryptor` 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(
+/* 验证微信服务器 */
+bool ret = client.VerifyEventSignatureForEcho(
     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"
 );
+
+/* 验证安全模式下 XML 消息的签名 */
+bool ret = client.VerifyEventSignatureFromXml(
+    callbackXml: "微信公众平台发来的通知内容，形如：<xml> <Encrypt>...</Encrypt> </xml>"
+);
 ```