使用java_aes_crypt对文件进行AES加解密
下载jce_policy-6.zip,更新JCE Unlimited Strength Jurisdiction Policy Files，详见readme文件
http://www.aescrypt.com/java_aes_crypt.html
使用AESCrypt.java
public static void main(String[] args) throws GeneralSecurityException, IOException{
AESCrypt aes = new AESCrypt(true,"pwd");
aes.encrypt(2, "e://test.doc", "e://test.doc.aes");
aes.decrypt("e://test.doc.aes","e://test.doc");
}
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