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This commit is contained in:
Jeff Burdges
2018-08-30 14:33:25 +02:00
parent dc3460db26
commit 35b8be2347
1 changed files with 4 additions and 5 deletions
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NetRNGs.md
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@@ -53,10 +53,11 @@ signature or private scalar. In comparison, DFinity's VSS + VRF
scheme produces a BLS signature, or even shared private scalar. scheme produces a BLS signature, or even shared private scalar.
If the message is known in advance, then PVSS could seemingly If the message is known in advance, then PVSS could seemingly
produce a BLS signature, although I need to think more about the produce a BLS signature, although I need to think more about the
timing of protocol messages in doing so. If correct, this would timing of protocol messages in doing so. If correct, this might
answer an important open question of DFinity's Timo Hanke, but answer an important open question of DFinity's Timo Hanke, but
maybe not the answer he wants, as PVSS probably need to be run for maybe not the answer he wants, as PVSS probably need to be run for
every signature produced. every signature produced, and DFinity's solution runs the DFG
infrequently.
Schoenmakers' PVSS avoids pairings but incorporates two rounds of Schoenmakers' PVSS avoids pairings but incorporates two rounds of
DLEQ proofs. These are complex operations, but might prove faster DLEQ proofs. These are complex operations, but might prove faster
@@ -102,7 +103,7 @@ TODO: link
If we have a network randomness scheme picking block producers or If we have a network randomness scheme picking block producers or
many another specific random results, then they could include a VRF many another specific random results, then they could include a VRF
of the previous block. As above, each node's only options are to of the block number. As above, each node's only options are to
produce a block or not produce a block, so whatever alternatives produce a block or not produce a block, so whatever alternatives
nodes they have who could produce a block give them influence over nodes they have who could produce a block give them influence over
the random number, but another user might produce a block first the random number, but another user might produce a block first
@@ -153,8 +154,6 @@ collaborative PRNGs here.
Relevant questions: Relevant questions:
- Can we produce a security proof for Alistair's VRF leveraging? - Can we produce a security proof for Alistair's VRF leveraging?
- How does Ouroboros handle similar situations? - How does Ouroboros handle similar situations?
- Why does DFinity want a VRF so bad?
- Are the issues with using PVSS?
- Is PVSS + VRF better? - Is PVSS + VRF better?
## Finality gadget leader assignments ## Finality gadget leader assignments