java7为什么显示服务器,我在android上面调用PKCS7Padding 是没有问题的，但是在java写的服务端就有问题了。不知道为什么，我用的jdk都是1.8.0的jdk。...

java.security.NoSuchAlgorithmException: Cannot find any provider supporting AES/ECB/PKCS7Padding

Default JDK supports encryption only through 128 bit keys becuase of American restrictions. So to support encryption from 256 bit long key we have to replace local_policy.jar and US_export_policy.jars in $JAVA_HOME/java-8-oracle/jre/lib/security folder otherwise it will give java.security.InvalidKeyException: Illegal key size or default

http://www.bouncycastle.org/specifications.html

一.解决 Cannot find any provider supporting AES/ECB/PKCS7PADDING 的问题.

1.在Android端的不必修改.Android一点问题都没有

2.将服务端的加密工具类的 AES/ECB/PKCS7PADDING 改成AES/ECB/PKCS5PADDING

二.解决EncryptionException:java.security.InvalidKeyException:Illegal key size 问题

1.下载 Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy 包