Hi all,

Thanks a lot. I am able to generate signer tag using below link-
http://seandroid.bitbucket.org/InstalltimeMAC.html

Couldn't test it though, but I guess it should work.

Thanks
Pankaj Kushwaha

On Mon, Dec 15, 2014 at 4:40 PM, Robert Craig <[email protected]>
wrote:
>
>  Best bet is to run setool which we maintain on our seandroid-5.0.1 and
> seandroid branches.  This will directly create the needed signer stanza for
> you. You'll have to build it separately though as it's not part of any
> normal device build. When run, just pass the apk in question and the hex
> encoded X.509 certificate used to sign the app, which is also the cert
> needed for the policy, will be dumped for you.
>
> You could also just pull out the cert yourself. The following command
> should work where CERT.RSA is the DER contents of your app's cert aftert
> unzipping the apk.
>
> openssl pkcs7 -inform DER -print_certs -in CERT.RSA | tail -n +4 | head -n -2 
> | base64 -d -i | hexdump -v -e '/1 "%02x" '
>
>
> On 12/15/2014 01:29 AM, Pankaj Kushwaha wrote:
>
> I tried below tag in mac_permissions.xml as my .mk flle in vendors had
> local cetificate as presigned-
>
>      <signer signature="@PRESIGNED" >
>       <seinfo value="mysevalue" />
>     </signer>
>
>  But I wasn't able to label it perfectly.
>
>  Then I tried below tag-
>  <package name="com.mypackage">
>   <seinfo value="mysevalue" />
> </package>
>
>  But still I wasn't able to label it perfectly.
>
>  Am is missing something ??
>
> On Mon, Dec 15, 2014 at 11:17 AM, Pankaj Kushwaha <
> [email protected]> wrote:
>>
>> I am currently thinking to add a signer tag in mac_permisison.xml and
>> include package stanzas in that tag, but I am not sure what sign shall I
>> use for this third party app.
>> I will give a custom seinfo in that tag for my package.
>>
>>
>> On Mon, Dec 15, 2014 at 10:58 AM, Pankaj Kushwaha <
>> [email protected]> wrote:
>>>
>>> Thanks a lot for the info.
>>> But I am in still in other issues. I don't have the keys from which app
>>> is signed and the client for which I am working won't share the key (due to
>>> the fear that if I have the key I might replace their app from devices). So
>>> that's the reason I was trying to find other ways.
>>>
>>> On Fri, Dec 12, 2014 at 9:41 PM, William Roberts <
>>> [email protected]> wrote:
>>>>
>>>>
>>>> On Dec 12, 2014 5:33 AM, "Stephen Smalley" <[email protected]> wrote:
>>>> >
>>>> > With regard to your other question (about reverting the changes and
>>>> just
>>>> > using name= with seinfo=default in your seapp_contexts), I don't think
>>>> > anything would currently prevent you from doing that but you'll lose
>>>> the
>>>> > safety check for any future changes you make, and if that app is ever
>>>> > removed from your build but the corresponding seapp_contexts line is
>>>> not
>>>> > removed, you'll leave open the potential for any app with the same
>>>> name
>>>> > to run in that domain. So I wouldn't recommend it.  At some point, we
>>>> > will likely add something to the CTS to check that the device
>>>> > seapp_contexts file does not have any such entries, so it will be
>>>> > enforced for production devices, but that doesn't exist in the current
>>>> > CTS AFAIK.
>>>>
>>>> As stephen mentioned not using a signing key is very bad practice. I
>>>> would also strongly emphasize that you take the advice given here. It is
>>>> really no additional work to just add the signing key into the build files
>>>> and use your own seinfo.
>>>>
>>>> >
>>>> > On 12/12/2014 06:02 AM, Pankaj Kushwaha wrote:
>>>> > > Hi,
>>>> > >
>>>> > > In my case, our app is a 3rd party app which will be pre-built
>>>> (part of
>>>> > > system.img) and will be uploaded on google play as well for any
>>>> updated
>>>> > > (just like gmail, google maps, etc).
>>>> > >
>>>> > > So there are no chances that anyone else will install app with same
>>>> > > package name.
>>>> > > Will there be any other consequences if I revert these two patches ?
>>>> > >
>>>> > > Also can you please guide me on how to add a new signer for my app ?
>>>> > > Because my apk doesn't have any .mk file so how will the system know
>>>> > > that app has to pick which seinfo from mac_permissions.xml ?
>>>> > > I just keep my signed apk in vendor/<oem>/common/apps/ folder.
>>>> > >
>>>> > > Thanks
>>>> > > Pankaj Kushwaha
>>>> > >
>>>> > > On Thu, Dec 11, 2014 at 8:18 PM, Stephen Smalley <[email protected]
>>>> > > <mailto:[email protected]>> wrote:
>>>> > >
>>>> > >     Correct.  We simply want to preclude the unsafe practice of
>>>> assigning
>>>> > >     domain by package name only, as anyone can create an app with
>>>> any
>>>> > >     package name, and first one to be installed with that name
>>>> wins.  So you
>>>> > >     must bind it to a specific signature as well.
>>>> > >
>>>> > >     On 12/11/2014 09:35 AM, William Roberts wrote:
>>>> > >     > It appears to me that you can just specify a signer in Mac
>>>> perms XML
>>>> > >     > with and use a custom seinfo in seapp contexts.
>>>> > >     >
>>>> > >     > On Dec 10, 2014 10:56 PM, "Pankaj Kushwaha"
>>>> > >     > <[email protected]
>>>> > >     <mailto:[email protected]>
>>>> > >     <mailto:[email protected]
>>>> > >     <mailto:[email protected]>>>
>>>> > >     > wrote:
>>>> > >     >
>>>> > >     >     Hi,
>>>> > >     >
>>>> > >     >     I was running some of the third party apps in my custom
>>>> domain, by
>>>> > >     >     adding below line in seapp_context-
>>>> > >     >     user=_app seinfo=default name=<pacakge_name>
>>>> domain=<custom_domain>
>>>> > >     >     type=<custom_file_type>
>>>> > >     >     and tehre were few other changes as well.
>>>> > >     >
>>>> > >     >     But in android L I am unable to do so because of below
>>>> patches-
>>>> > >     >     https://android-review.googlesource.com/#/c/90142/
>>>> > >     >     https://android-review.googlesource.com/#/c/90143/
>>>> > >     >
>>>> > >     >     I just wanted to know that is there any other way to run
>>>> my app in
>>>> > >     >     custom domain in andorid L ?
>>>> > >     >     If not, if I remove above two patches in what way will it
>>>> effect my
>>>> > >     >     other functionality ?
>>>> > >     >
>>>> > >     >     Thanks
>>>> > >     >     Pankaj Kushwaha
>>>> > >     >
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