实现在WP端silverlight的AES加密采用ECB加密方式和paddingpkcs#5的填充方式。 silverlight中的AESmanaged只有CBC加密方式和paddingpkcs#7的填充方式。-Achieve the WP side silverlight ECB encryption using AES encryption methods and paddingpkcs# 5 is filled. silverlight in AESmanaged only CBC e