Login without decrypting the whole tree

[swansontec]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Description

The loginTree is a pretty heavyweight structure that has everything decrypted. We want to get rid of this thing, so we just decrypt what we need, when we need it.

Unfortunately, the loginTree is a fundamental core data structure, so getting rid of it is a huge project. This PR just removes the loginTree decryption from the early login stages. This is a change where everything depends on everything else, so there is no way to do it except for a making a single giant commit.

With this change in place, the early login process relies more heavily on the stashTree data structure, which has the same shape as the login tree, but with everything encrypted instead of decrypted. We also add a new SessionKey, which consists a decryption key along with the loginId the key goes with.

We still have a loginTree stored in redux, but this is derived from the stashTree, and only exists once login is complete. Getting rid of this will be another project, but that one will be easier to break into small pieces. Since we derive the loginTree from the stashTree now, we never need to modify the loginTree in memory, which means we can also get rid of the LoginKit.login diff.

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[peachbits]

Took me a while to get through but makes sense 👍