This commit fixes 3 issues:
1) In some cases, the hash ratchet was not correctly found
2) Out of order messages were not processed correctly as the wrong error
was returned
3) Batched non datasync messages were not processed correctly
Fixes: #4170
This commit changes the format of the encryption id to be based off 3
things:
1) The group id
2) The timestamp
3) The actual key
Previously this was solely based on the timestamp and the group id, but
this might lead to conflicts. Moreover the format of the key was an
uint32 and so it would wrap periodically.
The migration is a bit tricky, so first we cleared the cache of keys,
that's easier than migrating, and second we set the new field hash_id to
the concatenation of group_id / key_id.
This might lead on some duplication in case keys are re-received, but it
should not have an impact on the correctness of the code.
I have added 2 tests covering compatibility between old/new clients, as
this should not be a breaking change.
It also adds a new message to rekey in a single go, instead of having to
send multiple messages
Andrea Maria Piana
Patryk Osmaczko
mprakhov
Vitaliy Vlasov
Vitaliy Vlasov
Pedro Pombeiro