Specification of ForceMove to exhibit safety.#2
Open
andrewgordstewart wants to merge 66 commits intomasterfrom
Open
Specification of ForceMove to exhibit safety.#2andrewgordstewart wants to merge 66 commits intomasterfrom
andrewgordstewart wants to merge 66 commits intomasterfrom
Conversation
At this point, by front-running, Eve can force an infinite loop of forceMoves, where Alice has no choice but to call refute. Since refute does not increment the channel's turnNumber on chain, this creates an infinite loop.
At this point, if Alice has commitments {5,6} and Eve calls
ForceMove(5), then Alice can't refute, and instead needs to respond with
a move.
Once the channel is in the CHALLENGE mode with the latest turn number, Eve would be forced to either - respond with a move (which Alice is ok with) - respond with an alternative move, providing a full round (which Alice has to be ok with, since she signed one of the commitments in that round, and has no control over the later commitments) - refute with a later state signed by Alice (which she can't)
(Some of the algorithm overflows currently.)
There's no need to define it as a constant and then check that it's a participant's IDX. Plus, this way, models exhaustively check all positions of Alice in the participants array.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
No description provided.