Java加密 规格严格

http://docs.oracle.com/javase/1.4.2/docs/guide/security/jce/JCERefGuide.html#CipherClass

http://stackoverflow.com/questions/2052213/an-example-of-encrypting-an-xml-file-in-java-using-bouncy-castle

http://www.devx.com/xml/Article/28701#codeitemarea

http://www.w3.org/2000/11/02-xml-encryption-ws/XmlEncryptor/XmlEncryptor.html