• 报错 Illegal key size or default parameters


    简介: java中使用AES对称加密后,请求报错: Caused by: java.lang.RuntimeException: java.security.InvalidKeyException: Illegal key size or default parameters at com.

    Caused by: java.lang.RuntimeException: java.security.InvalidKeyException: Illegal key size or default parameters
            at com.btzh.util.AESUtil.encrypt(AESUtil.java:18)
            at com.btzh.service.impl.SiThirdSystemServiceImpl.mapSystemParams(SiThirdSystemServiceImpl.java:32)
            at com.btzh.resource.SiThirdSystemResource.mapSystemParams(SiThirdSystemResource.java:41)
            ... 43 common frames omitted
    Caused by: java.security.InvalidKeyException: Illegal key size or default parameters
            at javax.crypto.Cipher.checkCryptoPerm(Cipher.java:1026)
            at javax.crypto.Cipher.implInit(Cipher.java:801)
            at javax.crypto.Cipher.chooseProvider(Cipher.java:864)
            at javax.crypto.Cipher.init(Cipher.java:1249)
            at javax.crypto.Cipher.init(Cipher.java:1186)
            at com.btzh.util.AESUtil.encrypt(AESUtil.java:15)

    原因是美国的出口限制,Sun通过权限文件(local_policy.jar、US_export_policy.jar)做了相应限制。密钥长度最大128,对于需要更大长度的场景则会抛出上面异常。

    解决办法是下载Oracle官方网站上的无政策限制权限文件,下载链接:

    jdk8:https://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

    下载后将%JAVA_HOME%jrelibsecurity中的local_policy.jar 和US_export_policy.jar替换为下载包中的的local_policy.jar 和US_export_policy.jar

    在CentOs 7.6环境查看jdk安装目录

    在/usr/java/jdk1.8.0_131/jre/lib/security下替换local_policy.jar和US_export_policy.jar

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  • 原文地址:https://www.cnblogs.com/guanbin-529/p/13556138.html
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