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Collective signature (a.k.a CoSi) #375

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4 tasks
olemis opened this issue Nov 22, 2019 · 0 comments
Open
4 tasks

Collective signature (a.k.a CoSi) #375

olemis opened this issue Nov 22, 2019 · 0 comments
Labels
cosi CoSi collective signature crypto Firmware messages for crypto operations firmware MCU firmware
Milestone
v3

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@olemis
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olemis commented Nov 22, 2019 •
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Describe the solution you'd like
Implement collective signature protocol (a.k.a CoSi) through following messages

  • CosiCommit asks device to commit to CoSi signing
  • CosiCommitment in reply to the former
  • CosiSign request to sign using CoSi
  • CosiSignature retrieves signature

Describe alternatives you've considered
CosiSignature may be replaced with a generic Buffer message with a numeric reason value, but this would duplicate protobuffer selection by message type.

Additional context
Requires fibercrypto/skywallet-protob#80
@olemis olemis added cosi CoSi collective signature crypto Firmware messages for crypto operations labels Nov 22, 2019
@olemis olemis added this to the v3 milestone Nov 22, 2019
@olemis olemis added the firmware MCU firmware label Nov 22, 2019
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cosi CoSi collective signature crypto Firmware messages for crypto operations firmware MCU firmware
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Milestone
v3
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@olemis