[incubator-shenyu-website] branch main updated: Update custom-sign-algorithm.md (#300)

[dengliming]

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The following commit(s) were added to refs/heads/main by this push:
     new 23277a1  Update custom-sign-algorithm.md (#300)
23277a1 is described below

commit 23277a10854d0e0e312051183756ba7a1e40bfa1
Author: Qicz <qicz...@gmail.com>
AuthorDate: Wed Sep 29 22:26:16 2021 +0800

    Update custom-sign-algorithm.md (#300)
---
 .../developer/custom-sign-algorithm.md             | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git 
a/i18n/zh/docusaurus-plugin-content-docs/version-2.4.0/developer/custom-sign-algorithm.md
 
b/i18n/zh/docusaurus-plugin-content-docs/version-2.4.0/developer/custom-sign-algorithm.md
index 0545f0a..adc1d5b 100644
--- 
a/i18n/zh/docusaurus-plugin-content-docs/version-2.4.0/developer/custom-sign-algorithm.md
+++ 
b/i18n/zh/docusaurus-plugin-content-docs/version-2.4.0/developer/custom-sign-algorithm.md
@@ -39,5 +39,34 @@ public SignService customSignService() {
 }
 ```
 
+## 其他扩展
 
+> 当你只希望修改签名算法时可以参考如下。
 
+* 签名算法，默认使用的 `org.apache.shenyu.common.utils.SignUtils#generateSign`，还可以新增一个类 
`CustomSignProvider` 实现 `org.apache.shenyu.plugin.sign.api.SignProvider`.
+
+```java
+/**
+ * The Sign plugin sign provider.
+ */
+public interface SignProvider {
+
+    /**
+     * acquired sign.
+     *
+     * @param signKey sign key
+     * @param params  params
+     * @return sign
+     */
+    String generateSign(String signKey, Map<String, String> params);
+}
+```
+
+* 把新增的实现类 `CustomSignProvider` 注入到`Spring IoC`即可，如下
+
+```java
+@Bean
+public SignProvider customSignProvider() {
+    return new CustomSignProvider();
+}
+```