bon je crois avoir trouvé le prob mais mon prog ne marche tjs pas quelqu'un pourrait m'aider SVP
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.cert.CertificateException;
import javax.naming.NamingException;
import javax.xml.crypto.MarshalException;
import javax.xml.crypto.dsig.XMLSignature;
import javax.xml.crypto.dsig.XMLSignatureException;
import javax.xml.crypto.dsig.XMLSignatureFactory;
import javax.xml.crypto.dsig.dom.DOMValidateContext;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class Main {
public static void main(String[] args) throws FileNotFoundException, SAXException, IOException, ParserConfigurationException, XMLSignatureException, MarshalException, NamingException, CertificateException
{
// on va charger le document à signer puis le valider à l'aide de validate()
DocumentBuilderFactory dbf= DocumentBuilderFactory.newInstance ();
dbf.setNamespaceAware (true);
DocumentBuilder builder = dbf.newDocumentBuilder ();
Document doc = builder.parse (new FileInputStream("monDoc.pdf.isf"));
NodeList NL = doc.getElementsByTagNameNS(XMLSignature.XMLNS, "Signature");
if (NL.getLength()==0) System.out.println ("Element non trouvée");
else System.out.println ("document valide");
if (validation((Element) NL.item(0))) System.out.println ("signature valide");
else System.out.println ("signature non valide");
}
public static boolean validation(Element signature) throws XMLSignatureException, MarshalException, FileNotFoundException, SAXException, IOException, ParserConfigurationException, NamingException, CertificateException
{
//Chargement du contexte de validation : en utilsant la clé du doc*/
DOMValidateContext valContext= new DOMValidateContext ( new KeyValueKeySelector() , signature) ;
System.out.println (valContext);
// récupération des différents composants de la XMLSignature
XMLSignatureFactory signatureFactory= XMLSignatureFactory.getInstance ("DOM");
// création d'une signature au format xml en utilsant DOMValidateContext
XMLSignature signatureVerif= signatureFactory.unmarshalXMLSignature(valContext);
System.out.println (signatureVerif);
// validation de la signature
boolean signatureValidity = signatureVerif.validate(valContext) ;
if (signatureValidity) return true;
else return false ;
}
}
package premier.essai;
import java.security.KeyException;
import java.security.PublicKey;
import java.security.cert.X509Certificate;
import java.util.List;
import javax.xml.crypto.AlgorithmMethod;
import javax.xml.crypto.KeySelector;
import javax.xml.crypto.KeySelectorException;
import javax.xml.crypto.KeySelectorResult;
import javax.xml.crypto.XMLCryptoContext;
import javax.xml.crypto.XMLStructure;
import javax.xml.crypto.dsig.SignatureMethod;
import javax.xml.crypto.dsig.keyinfo.KeyInfo;
import javax.xml.crypto.dsig.keyinfo.KeyValue;
public class KeyValueKeySelector extends KeySelector {
public KeySelectorResult select1(KeyInfo keyInfo,
KeySelector.Purpose purpose,
AlgorithmMethod method,
XMLCryptoContext context)
throws KeySelectorException {
if (keyInfo == null) {
throw new KeySelectorException("Null KeyInfo object!");
}
SignatureMethod sm = (SignatureMethod) method;
List<?> list = keyInfo.getContent();
for (int i = 0; i < list.size(); i++) {
XMLStructure xmlStructure = (XMLStructure) list.get(i);
if (xmlStructure instanceof X509Certificate) {
PublicKey pk = null;
try {
pk = ((KeyValue)xmlStructure).getPublicKey();
} catch (KeyException ke) {
throw new KeySelectorException(ke);
}
// make sure algorithm is compatible with method
if (algEquals(sm.getAlgorithm(), pk.getAlgorithm())) {
return new SimpleKeySelectorResult(pk);
}
}
}
throw new KeySelectorException("No");
}
static boolean algEquals(String algURI, String algName) {
if (algName.equalsIgnoreCase("DSA") &&
algURI.equalsIgnoreCase(SignatureMethod.DSA_SHA1)) {
return true;
} else if (algName.equalsIgnoreCase("RSA") &&
algURI.equalsIgnoreCase(SignatureMethod.RSA_SHA1)) {
return true;
} else {
return false;
}
}
@Override
public KeySelectorResult select(KeyInfo keyInfo, Purpose purpose,
AlgorithmMethod method, XMLCryptoContext context)
throws KeySelectorException {
// TODO Auto-generated method stub
return null;
}
}
j'obtient l'erreur suivante
[code=as]Exception in thread "main" java.lang.NullPointerException
at org.jcp.xml.dsig.internal.dom.DOMXMLSignature$DOMSignatureValue.validate(DOMXMLSignature.java:525)
at org.jcp.xml.dsig.internal.dom.DOMXMLSignature.validate(DOMXMLSignature.java:252)
at premier.essai.Main.validation(Main.java:58)
at premier.essai.Main.main(Main.java:38)
/code
