iOS Question Keychain group access - sharing Keychain data between apps

[luc-dev]

Hello,

Is it possible to activate Keychain group access with B4i ?

Thank you
Luc

 

[Erel]

You can access the keychain with the Phone library (KeyChainPut / Get).

You also need to add an entitlement: https://www.b4x.com/android/forum/threads/keychain-problem.71863/#content

 

[luc-dev]

Yes, I am able to access the app keychain using KeyChainPut, Get, Remove but I would like to access the same KeyChain record from several apps and I can't figure out how to do that.

I tried

#Entitlement: <key>keychain-access-groups</key><array><string>ABCDEFGHIJ.com.myCompany.MyApp</string></array>

and also

#Entitlement: <key>keychain-access-groups</key><array><string>ABCDEFGHIJ.*</string></array>

where ABCDEFGHIJ is the Apple AppID Prefix that is shared between the apps

Did I miss something?

 

[Erel]

You should use the one with the wildcard. Does it work?

 

[luc-dev]

I tried with the wildcard, adding the

#Entitlement: <key>keychain-access-groups</key><array><string>ABCDEFGHIJ.*</string></array>

to two of my apps. I use the same keychain key in the two apps to retreive the value.

Each app still retrieves its own value from the KeyChain store. Do I have to change something to Apple Dev Account/Certificates/ids ?

 

[Erel]

It works here. I tested it with three different applications. Two of them with the same entitlement and one without it.

The two apps with the entitlement shared the same keychain.

I've used the same provision profile and certificate in all three apps.

 

[luc-dev]

It finally works, at least with dev certificate/provisioning files. I tested with 3 apps. I hope it will work the same with production certificate.

Many thanks for your time and testing