A few comments about this.
* The Google Android Market App source code is not open source.
* You can learn about installation and the security involved around it
that the platform offers by studying the PackageManagerService and
PackageInstallerActivity in the platform source code
source.android.com
* This is not the best forum for understanding security. Try
http://groups.google.com/group/android-security-discuss

Hope this helps,
Balwinder KaurOpen Source Development Center·T· · ·Mobile· stick
togetherThe views, opinions and statements in this email are those of
the author solely in their individual capacity, and do not necessarily
represent those of T-Mobile USA, Inc.


On Aug 21, 7:44 am, engin <[email protected]> wrote:
> Hi, I want to learn that how google android market provides security
> of application.That is, I realize that, when user downloads
> application, market downloads and install application atomically to
> phone. I am designing market and security is important issue so I
> wonder that how google achieve this? How is application installed
> phone?
> 1) Is the apk downloaded sdcard and deleted after installation? In the
> case of this how can market guarantee that when apk downloaded to
> sdcard, program finishes unexpectedly  and installation- deletion of
> apk cannot be done?
> 2) Or installation is done from server?
> 3) I think that there exists  security not to copy apk. how do they do
> this?  Maybe they use phone id to install application, by this way
> even if anyone copy apk they cannot install it other phone?
>
> As I said above I am trying to desing market.
> Thanks...
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