Re: Encrypt xml with private key

I think you are using 256 bit encryption with the limited
strenth 
jurisdiction files.

See: Java Cryptography Extension (JCE), Unlimited Strength
Jurisdiction 
Policy Files 1.4.2 (htt
p://java.sun.com/j2se/1.4.2/download.html#docs)

Regards,
Mike

"huang zhimin" <flyerhzmgmail.com> wrote on
09/21/2007 10:13:16 AM:

> public void encrypt(Document document) throws Exception
{
>         KeyStore ks = getKeyStore();
>         X509Certificate certificate =
getCertificate(ks);
>         String algorithmURI = XMLCipher.AES_256;
> 
>         Element rootElement =
document.getDocumentElement();
> 
>         XMLCipher xmlCipher =
XMLCipher.getInstance(algorithmURI);
>         xmlCipher.init(XMLCipher.ENCRYPT_MODE,
certificate.getPublicKey 
());
> 
>         EncryptedData encryptedData =
xmlCipher.getEncryptedData();
>         KeyInfo keyInfo = new KeyInfo(document);
>         encryptedData.setKeyInfo(keyInfo);
>         xmlCipher.doFinal(document, rootElement, true);

> }
> 
> I have do it, but get the exception
> 
> Exception was java.security.InvalidKeyException:
Illegal key size or
> default parameters
>     at org.apache.xml.security.encryption.XMLCipher.
> encryptData(Unknown Source) 
>     at org.apache.xml.security.encryption.XMLCipher.
> encryptData(Unknown Source)
>     at org.apache.xml.security.encryption.XMLCipher.
> encryptElementContent(Unknown Source)
>     at
org.apache.xml.security.encryption.XMLCipher.doFinal
(Unknown 
Source)
>     at
org.jtang.service.security.engine.SecurityEngine.
> encrypt(SecurityEngine.java:121)
>     at
org.jtang.service.security.engine.SecurityEngineTest.
> testEncrypt(SecurityEngineTest.java:141)
> 
> What's wrong?

> On 9/21/07, Daniele Gagliardi <daniele.gagliardieng.it
> wrote: 
> If you're using asymmetric cryptography, why do you
want to use private
> key for encryption? In this way everyone who has the
public key (which 
> is PUBLIC) can decrypt the xml.
> For xml encryption, you can use the very good examples
in apache xml 
> signature package  (you can found these in
> 
xml-security-1_4_1/src_samples/org/apache/xml/security/sampl
es/encryption 
> directory of the apache distribution in
> htt
p://xml.apache.org/security/dist/java-library/ )
> 
> huang zhimin ha scritto:
> > Can anybody give me an example to encrypt xml with
private key?
> >
> > --
> > http://so
urceforge.net/projects/mycodeline/
> > http://rubyf
orge.org/projects/ropenwiki/ 

> 
> 
> 
> -- 
> http://so
urceforge.net/projects/mycodeline/ 
> http://rubyf
orge.org/projects/ropenwiki/