rror: failed to load rsa key from file \"%s\"\n", key_file);
        xmlSecKeysMngrDestroy(mngr);
        return(NULL);
    }

    /* set key name to the file name, this is just an example! */
    if(xmlSecKeySetName(key, BAD_CAST key_file) &lt; 0) {
        fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", key_file);
        xmlSecKeyDestroy(key);	
	xmlSecKeysMngrDestroy(mngr);
	return(NULL);
    }
	
    /* add key to keys manager, from now on keys manager is responsible 
     * for des