bolt-simple-taproot: make funding symmetric, add new type for shutdown #5
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In this commit, we build off the prior JIT nonce proposal modifying the
following:
* The funding flow returns to being symmetric. Both `open_channel` and
`accept_channel` carry nonces.
* The `shutdown` message once again transmit a nonce that'll be used
by both sides to sign the shutdown transaction. A symmetric nonce
approach is used here as both sides already know what the other will
use for their nonce, and there's only a single message to sign.
* The `closing_signed` message now only carries a 32-byte
`partial_sig` value, as the nonces has already been transmitted
ahead of time. Additionally, the existing "negotiation" feature has
been done away with. Cooperative close will now always succeed after
a single round, as the initiator is the only that ultimately pays
fees.
This was referenced Jan 13, 2023
Closed
|
Landing this so we can continue to iterate in future PRs and also sync up with the main BOLT PR. |
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In this commit, we build off the prior JIT nonce proposal modifying the
following:
The funding flow returns to being symmetric. Both
open_channelandaccept_channelcarry nonces.The
shutdownmessage once again transmit a nonce that'll be usedby both sides to sign the shutdown transaction. A symmetric nonce
approach is used here as both sides already know what the other will
use for their nonce, and there's only a single message to sign.
The
closing_signedmessage now only carries a 32-bytepartial_sigvalue, as the nonces has already been transmittedahead of time. Additionally, the existing "negotiation" feature has
been done away with. Cooperative close will now always succeed after
a single round, as the initiator is the only that ultimately pays
fees.