ovih dana je izasla u prodaju nokia 3250 i cuo sam da koristi samo . sisx instalacione fajove i da ne moze koristiti programe predvidjene za npr. 6600 ili 6630! jel zna neko nesto o ovim fajlovima, da li ima programa i gde mogu da se nadju

Gde si čuo/pročitao tu informaciju?!? Daj izvor!

Hmmm, ovo čak i postaje zanimljivo. Pričalo se i ranije o tkz. zaštićenim, sigurnosnim aplikacijama koje poštuju (DRM)Digital Rights Management i izgleda da su to aplikacije koje će se distribuirati u vidu .sisx sertifikovanih fajlova("paket" sadrži program koji će biti instaliran na uredjaju i još sadrži instrukcije koje vode ka installer komponentama i kako da relocira softver u samom uredjaju) za tkz. Software Series 60 3rd Edition - Symbian 9.1 pametne telefone, tipa Nokia n80/3250 i sl.
Mada verujem da mogu i obični .sis instalacione datoteke biti moguće instalirati, jer je ovo još u razvoju!

Primer .sisx fajla i kontrole rezolucije ekrana telefona:

Display resolution
Conditional blocks can be used to control the installation process according to
the display resolution supported by the device. The syntax is as follows:

IF DisplayXPixels=<TInt> AND DisplayYPixels=<TInt> <packagelines>

[ELSEIF DisplayXPixels=<TInt> AND DisplayYPixels=<TInt>
<package-lines>]
[ELSE <package-lines>]

ENDIF

The following example instructs the software installer component to copy
resolution-dependent resources to the device:

IF DisplayXPixels=176 AND DisplayYPixels=208
"marm\myapp176x208.mbm"-"!:\System\Apps\MyApp\Myapp.mbm"

ELSEIF DisplayXPixels=240 AND DisplayYPixels=320
"marm\myapp240x320.mbm"-"!:\System\Apps\MyApp\Myapp.mbm"

ELSE

;Screen resolution not supported we have to show error
;message and cancel the installation
"nosupport.txt"-"", FILETEXT, TEXTEXIT

ENDIF

Ovo postaje sve zanimljivije
E, da, 3250 je "samo" 360 Evra

Što mu dodje u prevodu: "malo sutra ćeš instalirati neku aplikaciju ako nema potvrdu rezolucije od 240x320 recimo"!
Dao bog da nisam u pravu, inače nema ništa od nabavke n80 i sl. modela!

Pa ako je tako, valjda ce brzo da naprave programe sa podrskom za tu rezoluciju. Nego, a sta ako moze da rade i ove sto sada koristimo pa slika bude kao kad instaliras neku series 40 java igricu na symbian.
Da ga okadimo za svaki slucaj [smilie=pop.gif]

Evo još nečega(mrzi me da prevodim):

In Platform Security-enabled platforms, the software installer has the
responsibility of identifying and authorizing the software during installation. This
can be achieved with signed installation packages, allowing validation of a
signature against trusted certificates stored in the phone. The installation
software can install two types of packages: SISX packages (note that the actual
file extension is still .sis), and Java archives (JAR) run by a Java virtual machine.
When a SISX package is installed into the system, its signature is validated
against root certificates that are stored in the phone. If they match, the
application is installed and the requested capabilities are stored within the
executable, assuming that the certificate can grant the capabilities. The
application’s Secure Identifier is also checked for local uniqueness; that is, a
device cannot have two applications with the same SID. The software installer
has the Trusted Computing Base (TCB) capability to access and modify all
protected directories under the sys directory, so it is possible to save executable
files to the \sys\bin directory. For unsigned applications, only basic capabilities
can be granted, and these are always confirmed by the user.
Software can also be installed to removable media during the installation
procedure. During installation, a hash (checksum) of the executable is stored
locally in the phone to protect the integrity of the binary. Afterwards, if the locally
stored hash does not correspond with the binary on the memory card, the binary
is not loaded. This overcomes the fact that the content of the memory card can
be changed outside Symbian OS. The main drawback is that applications
become dependant on the phone they were originally installed into.
Applications and data can also be distributed directly on removable media. The
memory card can contain the SISX signature part, which is then processed by
the Software Installer when the memory card is installed. The SISX signature
part must be of preinstalled application (PA) type, and it must be signed against
a trusted certificate stored in the phone to perform silent installation.
4.5.2 Symbian Signed
Symbian has launched a process called Symbian Signed to verify and supply
signatures and certificates for application suppliers' software. During the
process, the Symbian Test House also tests the application against test criteria
and ensures that it is working as specified in the user guide. The main goals for
the Symbian Signed program are:
  Prevent tampering of installation (.SIS) files
  Provide a way to identify the application supplier
  In the future, possibility to cancel (revoke) the installation file’s certificate
Signatures are based on a Public Key Infrastructure (PKI) security model, where
.SIS files are signed by the vendor’s private key. The software installer verifies
the package content and author with the vendor’s public key. If a file has been
tampered with or hacked, it will be detected and the installation process can be
cancelled. However, the content of the installation file is not encrypted, so it can
be easily stolen or reverse engineered.


Mrzi me više da podvlačim, izvucite sami zaključke.

A new version of DRM, the OMA DRM v2.0, is included in Symbian OS v9.1 (an optional
feature in S60 3rd Edition).
Što mu dodje: novi OS koji je "vredan" samo izdavačima, bla, bla....

Kako li će izgledati aplikacije za n80 koja ima rezoluciju od 352x416 piksela?!?
Još ako se primeni recimo "recept":
 "ELSE
;Screen resolution not supported we have to show error
;message and cancel the installation
"nosupport.txt"-"","
 

Mada uvek ima mesta za "reverse engineering"! 

Dzabe se trude.Ne bi ni symbian a bogami ni nokia telefoni bili ovoliko rasireni i popularni da nema ovoliko softwerske podrske za dz.Sigurno ce i sa ovim novim symbianom da ostave neku mogucnost za hackovanje kao slucajno jer inace ko bi im kupovao telefone?Verovatno mnogo manji procenat ljudi nego sad.Ja sigurno ne bi.Moraju kao nesto da urade da se ne bi demoralisali proizvodjaci software-a,ali u sustini mislim da ne treba da se sekiramo.