java.security.InvalidKeyException: Illegal key size aes解密失敗

時間 2019-11-18

標籤 java.security.invalidkeyexception java security invalidkeyexception illegal key size aes 解密失敗欄目 Java 简体版

原文原文鏈接

使用微信時按期提示：java.security.InvalidKeyException: Illegal key size和java

com.qq.weixin.mp.aes.AesException: aes解密失敗
   at com.qq.weixin.mp.aes.WXBizMsgCrypt.decrypt(WXBizMsgCrypt.java:169)
   at com.qq.weixin.mp.aes.WXBizMsgCrypt.decryptMsg(WXBizMsgCrypt.java:264)
   at cn.pdmi.channel.controller.WechatController.authWechat(WechatController.java:90)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:497)
   at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
   at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
   at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777)
   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706)web

這是由於用到了jdk sercurity, 而jdk sercurity 使用的jar包 $JAVA_HOME/lib/security/local_policy.jar 和 $JAVA_HOME/jre6_64/lib/security/US_export_policy.jar中有對技術出口的限制，加密只有128bit,而沒有限制的則有256bit.spring

解決辦法：微信

1. 按照版本選擇下載 Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files 8mvc

2. 下載jce_policy-1_8_2.zip後解壓，放入$JAVA_HOME/lib/security/目錄下替換原來的jar包。app

3. 重啓服務加密