IPhone : Generate X-Apple-ActionSignature

on Tuesday, February 24, 2015

for some research at work I have to understand how to generate the X-Apple-ActionSignature which can be found in HTTP-Headers e.g. of iTunes-traffic. I've read that it can be found in other Mac OS X and iOS specific network traffic, too.


What I've found so far is that iTunes sends a GET request to



https://init.itunes.apple.com/WebObjects/MZInit.woa/wa/signSapSetupCert


In the response a plist is appended which has a key 'sign-sap-setup-cert' containing probably a certificate. After that a POST request contains 'sign-sap-setup-buffer' and is sent to



https://play.itunes.apple.com/WebObjects/MZPlay.woa/wa/signSapSetup


The response has again 'sign-sap-setup-buffer' in the data segment and after that every other request contains a X-Apple-ActionSignature. However I can not find out how to generate this. Is someone able to help me?


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