XML encryption and decryption

[Anirvinya]

Hi all,

I am working as a web developer in one company. I used XML for validation the webpage. Xml encryption is a w3c encrypted xml standards. The encryption process involves encrypted xml document element and its sub-elements, through encryption, xml initial content will be replaced, but the xml format is still being retained intact. I want to know that how XML can be encrypted and decrypted. Please advice. Thanks in advance.

[Praetor]

We have some encryption methods in xml. One is symmetric encryption method of encrypting xml. This encryption method uses only one key, that is whether it is encrypted or decrypted xml an xml use the same key. Because the key is not to save encrypted xml, so we need to encryption and decryption process of loading the key and protect it from being stolen.Uusing symmetric encryption and asymmetric encryption method to encrypt a combination of xml. This method requires a symmetric key used to encrypt the data, and a symmetric key used to protect the non-symmetric key. Encrypted symmetric key and encrypted data stored in the xml along with the document. When using private, non-symmetric key decryption key, when to use the public key of an asymmetric key encryption. Check and reply.

[Katty]

I am using Non-symmetric encryption algorithm that requires two keys: public key (publickey) and private key (privatekey). Public key and private key are a pair, if the public key used to encrypt data, Only the corresponding private key can decrypt; if the private key used to encrypt the data, then only with the corresponding public key can decrypt. Because the encryption and decryption using two different keys, so this algorithm is called for non-symmetric encryption algorithm). Using X.509 encryption xml, this method is to use X.509 as a non-symmetric key, which consists of a third party such as VeriSign and the like to provide. All the best.

[kelfro]

No matter how the xml encryption is done, save the encrypted data is always one of two ways.
(1). Encrypted all of the elements have been named <EncryptedData>
(2) Only the encrypted data to be replaced, while the element name is still readable, and will not change.
This subtle change is very important. For example, If your xml document including the root element is called <employee>, the root element has a section under the detailed information stored in the sub-elements called <WrittenWarning>. If you send this xml, and want to <WrittenWarning> This element is protected, then the method using the first one, then <WrittenWarning> will be replaced <EncryptedData>, you will not be encrypted document from the get any readable information. Check and reply.

[Modifier]

In .Net 2.0 in you can modify the properties of a Boolean value, it can be very simple and the choice of which method to use. The following xml example uses a non-encrypted symmetric encryption method, the xml element of the document under the author and the author of the content of encrypted elements using <EncryptedData> to replace.

xml document
<? xml version = "1.0" standalone = "no"?>
<article>
<articleinfo>
<title> XPathQueries on XmlDocument objects in. NET 1.1 </ title>
<abstract>
<para> Hello </ para>
</ abstract>
<author>
<honorific> Mr. </ honorific>
<firstname> George </ firstname>
<surname> Jaohn </ surname>
<email> 1@abc.com </ email>
</ author>
</ articleinfo>

[Reegan]

xml decryption process can be summarized as the following four steps:
1.In the xml document, select an EncryptedData element
2.The use of a non-symmetric key to decrypt the key (using the private key)
3.The use of non-encrypted key to decrypt the data
4.Replace the Encrypted Data element in the elements are not encrypted.
All the best.