Hello Ryan!
Thank you for your response, this link from github helped me to get
the correct keyid.
> As an aside, I'm curious to hear more about what you're working on that
relates the accessing data in Firefox Sync, if you'd be willing to share.
I'm studying cryptography and i'm interested in studying how modern
companies use it in their products.
And I have some new questions:
1)If I'm not mistaken the POST request to /account/device is not
necessary for the sync operation. But in the Fiddler I saw that some
crypto values are included in this request. Can you also explain me
how the next values are generated: pushpublickey, pushauthkey,
pushcallback and kid, IV, hmac, ciphertext values from the
"availableCommands":{"https://identity.mozilla.com/cmd/open-uri
":"{\"kid\":\"\",\"IV\":\"...\",\"hmac\":\"...\",\"ciphertext\":\"...\"}"}}
)? I can’t find where they are generated in the source code.
2) In the article
https://mozilla-services.readthedocs.io/en/latest/sync/storageformat5.html
I see that for the encryption of sync data only the value of kB is
needed. But the GET request to
https://token.services.mozilla.com/1.0/sync/1.5 returns me some extra
data: 'hashed_fxa_uid', 'key', 'id'. I think 'key' and 'id' are used
for the Hawk authentication but what about 'hashed_fxa_uid'?
Best wishes,
Albert
P.S. I didn’t understand if I should reply both you and sync-dev or only
you and I firstly sent a message only to you(I think you haven’t received
it and that’s why I’m duplicating the message here)
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