[xmlsec] Cannot get encryption to work on Win32

[Jamshed Nawaz]

Can someone please provide a clue as to why I can't get the following code
to work on Windows (XP/2003server), but it works fine on Solaris. The
error I get:

func=xmlSecEncCtxXmlEncrypt:file=..\src\xmlenc.c:line=417:obj=unknown:subj=unknown:error=14:invalid type:type=ÿ%È'G

I used the win32 binaries:
xmlsec 1.2.6
libxml2 2.6.17
openssl 0.9.7e
iconv 1.9.1

I use the latest mingw compiler.

I tried using earlier versions but get the same error.

Here's my encrypt funtion (mostly based on the example):

------------------------------START CODE------------------------------
 std::string encrypt()
  {
    int code = -1;
    std::string msg("");
    xmlChar *xml_secure = NULL;
    int sz;

    xmlDocPtr doc = NULL;
    xmlNodePtr encDataNode = NULL;
    xmlNodePtr keyInfoNode = NULL;
    xmlSecEncCtxPtr encCtx = NULL;
    
    /*assert(keys_mngr);
      assert(xml_plain);*/
    
    std::string priv_key = "symkey_test";
    
    /* load template */
    doc = xmlParseMemory("<?xml version=\"1.0\" encoding=\"UTF-8\"?><SomeXML/>",
                         strlen("<?xml version=\"1.0\" encoding=\"UTF-8\"?><SomeXML/>"));
    if ((doc == NULL) || (xmlDocGetRootElement(doc) == NULL)) {
      std::cerr << "Error: unable to parse string [xmlParseMemory|xmlDocGetRootElement]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    /* create encryption template to encrypt XML file and replace
     * its content with encryption result */
    encDataNode = xmlSecTmplEncDataCreate(doc,
                                          xmlSecTransformAes128CbcId,
                                          NULL,
                                          xmlSecTypeEncElement,
                                          NULL,
                                          NULL);
    if(encDataNode == NULL) {
      std::cerr << "Error: failed to create encryption template [xmlSecTmplEncDataCreate]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    /* we want to put encrypted data in the <enc:CipherValue/> node */
    if(xmlSecTmplEncDataEnsureCipherValue(encDataNode) == NULL) {
      std::cerr << "Error: failed to add CipherValue node [xmlSecTmplEncDataEnsureCipherValue]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    /* add <dsig:KeyInfo/> and <dsig:KeyName/> nodes to put key name
     * in the signed document */
    keyInfoNode = xmlSecTmplEncDataEnsureKeyInfo(encDataNode, NULL);
    if(keyInfoNode == NULL) {
      std::cerr << "Error: failed to add key info [xmlSecTmplEncDataEnsureKeyInfo]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    //"""""""""""""""""""""""//
    //  Provide name of key  //
    //"""""""""""""""""""""""//
    if(xmlSecTmplKeyInfoAddKeyName(keyInfoNode,
                                   (xmlChar*)priv_key.c_str()) == NULL) {
      std::cerr << "Error: failed to add symmetric key name [xmlSecTmplKeyInfoAddKeyName]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    /* create encryption context */
    encCtx = xmlSecEncCtxCreate(keys_mngr);
    if(encCtx == NULL) {
      std::cerr << "Error: failed to create encryption context [xmlSecEncCtxCreate]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    /* encrypt the data */
    if(xmlSecEncCtxXmlEncrypt(encCtx,
                              encDataNode,
                              xmlDocGetRootElement(doc)) < 0) {
      std::cerr << "Error: encryption failed [xmlSecEncCtxXmlEncrypt]\n";
      goto CLEANUP_AFTER_ENCRYPT_;
    }
    
    /* we template is inserted in the doc */
    encDataNode = NULL;
    
    xmlDocDumpMemory(doc,  &xml_secure,  &sz);
    
    /* success */
    code = 0;
    
  CLEANUP_AFTER_ENCRYPT_:
    if(encCtx != NULL)
      xmlSecEncCtxDestroy(encCtx);
    if(encDataNode != NULL)
      xmlFreeNode(encDataNode);
    if(doc != NULL)
      xmlFreeDoc(doc);
    
    std::string xml_secure_;
    if (code<0 || xml_secure==NULL) {
      throw XmlSecurityError("Error encrypting request data.");
    }
    else {
      xml_secure_.assign( (char*)xml_secure );
      free_(xml_secure);
    }

    return xml_secure_;
  }
------------------------------END CODE------------------------------

--
Thanks,
Jamshed