Example usage for java.security KeyFactory getProvider

Introduction

In this page you can find the example usage for java.security KeyFactory getProvider.

Prototype

public final Provider getProvider() 

Source Link

Document

Returns the provider of this key factory object.

Usage

From source file:com.vmware.demo.SamlService.java

public String validateSAMLResponse(String samlResponse, String samlCert) throws Exception {
    String decodedString = "";
    try {/*from ww w . j a  v  a  2 s  .  co  m*/
        decodedString = decodeSAMLResponse(samlResponse);
        InputStream inputStream = new ByteArrayInputStream(decodedString.getBytes("UTF-8"));

        // Parse XML
        BasicParserPool parserPoolManager = new BasicParserPool();
        parserPoolManager.setNamespaceAware(true);
        parserPoolManager.setIgnoreElementContentWhitespace(true);
        Document document = parserPoolManager.parse(inputStream);
        Element metadataRoot = document.getDocumentElement();

        QName qName = new QName(metadataRoot.getNamespaceURI(), metadataRoot.getLocalName(),
                metadataRoot.getPrefix());

        // Unmarshall document
        Unmarshaller unmarshaller = Configuration.getUnmarshallerFactory().getUnmarshaller(qName);
        Response response = (Response) unmarshaller.unmarshall(metadataRoot);
        Issuer issuer = response.getIssuer();
        logger.info("Parsed response.  Issued:" + response.getIssueInstant().toString() + ", issuer: "
                + issuer.getValue());

        java.security.cert.X509Certificate jX509Cert = SamlUtils.parsePemCertificate(samlCert);
        if (null == jX509Cert) {
            logger.info("Failed to parse cert. " + samlCert);
            return "";
        }

        PublicKey publicCert = jX509Cert.getPublicKey();
        logger.info("Extracted cert.  Cert:" + publicCert);
        X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(publicCert.getEncoded());

        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);
        logger.debug("Key created by provider: " + keyFactory.getProvider().toString());

        // Setup validation
        BasicX509Credential publicCredential = new BasicX509Credential();
        publicCredential.setPublicKey(publicKey);
        SignatureValidator signatureValidator = new SignatureValidator(publicCredential);
        Signature signature = response.getSignature();

        // Validate
        try {
            signatureValidator.validate(signature);
            logger.info("Assertion signature validated.");
        } catch (ValidationException e) {
            logger.error("Failed to validate signature of assertion", e);
            throw e;
        }

        // Get decryption key
        RSAPrivateKey privateKey = null;
        BasicX509Credential decryptionCredential = new BasicX509Credential();
        decryptionCredential.setPrivateKey(privateKey);
        StaticKeyInfoCredentialResolver skicr = new StaticKeyInfoCredentialResolver(decryptionCredential);

        // Decrypt assertion
        Decrypter decrypter = new Decrypter(null, skicr, new InlineEncryptedKeyResolver());
        if (response.getEncryptedAssertions().isEmpty()) {
            logger.info("Nothing to decrypt in assertion.");
        } else {
            Assertion decryptedAssertion;
            try {
                decryptedAssertion = decrypter.decrypt(response.getEncryptedAssertions().get(0));
                logger.info("Assertion decryption succeeded.");
            } catch (DecryptionException e) {
                logger.error("Failed to decrypt assertion", e);
                throw e;
            }

            // Extract attributes, log in output
            List<AttributeStatement> attributeStatements = decryptedAssertion.getAttributeStatements();
            for (int i = 0; i < attributeStatements.size(); i++) {
                List<Attribute> attributes = attributeStatements.get(i).getAttributes();
                for (int x = 0; x < attributes.size(); x++) {
                    String strAttributeName = attributes.get(x).getDOM().getAttribute("Name");

                    List<XMLObject> attributeValues = attributes.get(x).getAttributeValues();
                    for (int y = 0; y < attributeValues.size(); y++) {
                        String strAttributeValue = attributeValues.get(y).getDOM().getTextContent();
                        logger.info(strAttributeName + " = " + strAttributeValue);
                    }
                }
            }
        }
    } catch (Exception ex) {
        logger.error("Failed to validate assertion", ex);
        throw ex;
    }
    return decodedString;
}

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