builder.setUserInfo("wss4jcert");
builder.setKeyIdentifierType(WSConstants.X509_KEY_IDENTIFIER);
builder.setKeyEnc(WSConstants.KEYTRANSPORT_RSAOEP);
Document doc = unsignedEnvelope.getAsDocument();
WSSecHeader secHeader = new WSSecHeader();
secHeader.insertSecurityHeader(doc);
log.info("Before Encryption Triple DES/RSA-OAEP....");
Document encryptedDoc = builder.build(doc, crypto, secHeader);
log.info("After Encryption Triple DES/RSA-OAEP....");
Message encryptedMsg = (Message) SOAPUtil.toSOAPMessage(encryptedDoc);