RE: xml encryption/decryption of binary data

Hess Yvan Tue, 04 Apr 2006 02:54:45 -0700

Title: xml encryption/decryption of binary data

I din't find a way how to encryts external binary data using Apache XML Security. I proceed in the following way:

1. I created an encrypted key element using Apache XML Security producing the following result

   <xenc:EncryptedKey xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
      <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-1_5"/>
      <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
         <ds:KeyName>SphinxTest</ds:KeyName>
      </ds:KeyInfo>
      <xenc:CipherData>
         <xenc:CipherValue>EHqHZz7s564E/SQSWjvZ49d3fryP7EN+.....</xenc:CipherValue>
      </xenc:CipherData>
      <xenc:CarriedKeyName>Generated-AES-SecretKey</xenc:CarriedKeyName>
   </xenc:EncryptedKey>

2. Then, I created an EncryptedData using XMLCipher.createEncryptedData(CipherData.REFERENCE_TYPE, uri);

   <xenc:EncryptedData xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
      <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#aes128-cbc"/>
      <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
         <ds:KeyName>Generated-AES-SecretKey</ds:KeyName>
      </ds:KeyInfo>
      <xenc:CipherData>
         <xenc:CipherReference URI="urn:hypersuite:534177D3-C0A8027601B4E829-57982AC1"/>
      </xenc:CipherData>
   </xenc:EncryptedData>

3. Then I have to encrypt the external binary "urn:hypersuite:534177D3-C0A8027601B4E829-57982AC1" MANUALLY. I didnt find a chance to do it using XML security. It seems that the functionalilty is implemented into Apache xml-signature but not into Apache xml-encryption. I thing I will have the same problem for decryption :-)

Hope it helps you.

Regards. Yvan

From: Larchier Christophe [mailto:[EMAIL PROTECTED]
Sent: mardi, 4. avril 2006 11:37
To: [email protected]
Subject: RE: xml encryption/decryption of binary data

The binary datas are externals (payloads of SOAP with attachments messages).

-----Message d'origine-----
De : Hess Yvan [mailto:[EMAIL PROTECTED]
Envoyé : mardi 4 avril 2006 11:29
À : [email protected]
Objet : RE: xml encryption/decryption of binary data

Where you binary datas are stored ? Inside the XML document or outside the document ? Actualy I am "using" XML security to encryt external binary data and may be I can help you if you explain me the problem in detail.

Regards. Yvan Hess

From: Larchier Christophe [mailto:[EMAIL PROTECTED]
Sent: mardi, 4. avril 2006 10:10
To: [email protected]
Subject: RE: xml encryption/decryption of binary data

Which package do you refer to ?

If it's possible, I'd prefer not setting the world on fire.

Christophe

-----Message d'origine-----
De : Martin Labarthe Dubois [mailto:[EMAIL PROTECTED]
Envoyé : lundi 3 avril 2006 20:13
À : [email protected]
Objet : Re: xml encryption/decryption of binary data

why don´t you just use Java crypt primitives for that?

----- Original Message -----

From: Larchier Christophe

To: [email protected]

Sent: Friday, March 31, 2006 4:41 AM

Subject: RE: xml encryption/decryption of binary data

Nobody uses xml encryption with binary datas ???

-----Message d'origine-----
De : Larchier Christophe [mailto:[EMAIL PROTECTED]
Envoyé : mercredi 29 mars 2006 17:41
À : [email protected]
Objet : xml encryption/decryption of binary data

Hi all,

When I use apache xml security library to encrypt an xml document like the following one, the xml header is loosen.

<?xml version="1.0" encoding="UTF-8"?>

<PurchaseOrder>
...
</PurchaseOrder>

After encrypting/decrypting, I get only :

<PurchaseOrder>
...
</PurchaseOrder>

I use the doFinal() method to encrypt/decrypt with the all document as parameter :
xmlCipher.doFinal(doc, doc);

How do you manage this ?

Is it possible to do xml encryption with binary datas ?
I have tried to insert my binary datas into a dom document, but some special characters are added (to replace < > \).

Thanks,
Christophe

RE: xml encryption/decryption of binary data

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