208eb65f1b Make NodeInfo API public (sanket1729)
Pull request description:
Reported by @shesek. Users might find it convenient to manually construct the tree using `NodeInfo` API
```rust
let leaf1 = NodeInfo::from_leaf_with_ver();
let leaf2 = NodeInfo::from_leaf_with_ver();
let root = NodeInfo::combine(leaf1, leaf2);
let spend_info = TaprootSpendInfo::from_node_info(&secp, internal_key, root);
```
ACKs for top commit:
dr-orlovsky:
ACK 208eb65f1b
apoelstra:
ACK 208eb65f1b
Tree-SHA512: b5a6b26e0d4a637f7ad6e987976b31b00d3567feca85f1a0bf63aa03603aded0ddae6578b1cabc1056870a596b8cb1a83e4ef3f45802e03da80c3d58d9bab1f1
The exact code formatting we use is not as important as uniformity.
Since we do not use tooling to control the formatting we have to be
vigilant ourselves. Recently I (Tobin) changed the way default type
parameters were formatted (arbitrarily but uniformly). Turns out I
picked the wrong way, there is already a convention as shown in the rust
documentation online (e.g. [1]).
Use 'conventional' spacing for default type parameters. Make the change
across the whole repository, found using
git grep '\<.* = .*\>'
[1] - https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
In this library we specifically do not use rustfmt and tend to favour
terse statements that do not use extra lines unnecessarily. In order to
help new devs understand the style modify code that seems to use an
unnecessary number of lines.
None of these changes should reduce the readability of the code.
Our usage of `where` statements is not uniform, nor is it inline with
the typical layout suggested by `rustfmt`.
Make an effort to be more uniform with usage of `where` statements.
However, explicitly do _not_ do every usage since sometimes our usage
favours terseness (all on a single line).
Do various whitespace refactorings, of note:
- Use space around equals e.g., 'since = "blah"'
- Put return/break/continue on separate line
Whitespace only, no logic changes.
Update our `rust-secp256k1` dependency to the latest version.
Requires doing:
- Add a new variant to `Error` for the case where parity of the internal
key is an invalid value (not 0 or 1).
- Use non-deprecated const
Changes the API from TweakedPublicKey to XonlyPublicKey. I believe we
introduced TweakedPublicKey to guard against creating address API. This
is confusing because when we want to verify control block we have to
call dangerous_assume_tweak.
This is in true in most cases that the key would be tweaked, but we only
want to guard in while creating a new address. If we want to verify
blocks, we should deal with native X-only-keys regardless of how they
were created
Rust convention is to use `to_` for conversion methods that convert from
an owned type to an owned `Copy` type. `into_` is for owned to owned
non-`Copy` types.
Re-name conversion methods that use `into_` for `Copy` types to use
`to_`, no need to deprecate these ones because they are unreleased.
b5bf6d7319 Improve rustdocs on schnorr module (Tobin Harding)
a6d3514f2b Return parity when doing tap_tweak (Tobin Harding)
7af0999745 Re-name TweakedPublicKey constructor (Tobin Harding)
3c3cf0396b Remove use of unreachable in error branch (Tobin Harding)
d8e42d153e Remove 'what' comments (Tobin Harding)
b60db79a3b Use un/tweaked public key types (Tobin Harding)
402bd993b2 Add standard derives to TweakedPublickKey (Tobin Harding)
9c015d9ce3 Add newline to end of file (Tobin Harding)
Pull request description:
We have two types for tweaked/untweaked schnorr public keys to help users of the taproot API not mix these two keys up. Currently the `taproot` module uses 'raw' `schnoor::PublicKey`s.
Use the `schnoor` module's tweak/untweaked public key types for the `taproot` API.
Fixes: #725
Please note, I saw this was labeled 'good-first-issue' but I ignored that and greedily implemented a solution because of two reasons
1. We want to get taproot stuff done post haste.
2. I'm struggling to follow what is going on with all the taproot work so this seemed like a way to get my hands dirty.
ACKs for top commit:
dr-orlovsky:
utACK b5bf6d7319
sanket1729:
ACK b5bf6d7319
Tree-SHA512: e3e0480e0d193877c33ac11d0e3a288b0393d9475b26056914e439cb3f19583c1936e70d048df8d2120a36a63b6b592d12e21ca3ab7e058dce6f8f873c3b598b
1518517374 Decrease Huffman weight type to 32 bits (Jeremy Rubin)
Pull request description:
This builds on https://github.com/rust-bitcoin/rust-bitcoin/pull/699 but is the more bikesheddable part since it changes the API.
> u32 of weight should be enough for any branch.
-- Bill Gates
ACKs for top commit:
dr-orlovsky:
utACK 1518517374
Kixunil:
ACK 1518517374
Tree-SHA512: 9c507ae6129dda8dc069b0a142181a78cf89cb3ebf9d2169c46662822cb4ea9ed075bf484528f5399fe0ed383a425174a702e2d685f31c246f5a86c46ed17c3a
Currently we calculate the parity during `tap_tweak` but do not return
it, this means others must re-do work done inside `tap_tweak` in order
to calculate the parity. We can just return the parity along with the
tweaked key.
Keeping inline with the method on `UntweakedPublicKey` that outputs a
`TweakedPublicKey` we can use the same name, for the same reasons.
Use `dangerous_assume_tweaked` as the constructor name to highlight the
fact that this constructor should probably not be being used.
We have two types for tweaked/untweaked schnorr public keys to help
users of the taproot API not mix these two keys up. Currently the
`taproot` module uses 'raw' `schnoor::PublicKey`s.
Use the `schnoor` module's tweak/untweaked public key types for the
`taproot` API.
e7b84e20d3 Use expect for concensus_encode on Vec (Tobin Harding)
4031fbf4ba Use expect for concensus_encode on sinks (Tobin Harding)
fa513bb5b5 Use expect for concensus_encode on engines (Tobin Harding)
a2efafcf9a Use error instead of err (Tobin Harding)
Pull request description:
Calls to `unwrap` outside of tests are generally unfavourable. We currently call `unwrap` in a bunch of places on calls to `consensus_encode` when passing writers that do not fail.
Remove `unwrap` calls on all calls to `consensus_encode` that pass a writer argument for which write functions do not fail. Use `expect` with a descriptive string instead.
Fixes: #714
ACKs for top commit:
Kixunil:
ACK e7b84e20d3
RCasatta:
ACK e7b84e20d3
Tree-SHA512: 3f84598a14ecf3dcde4f418ad1a1dc5278b3ef8b2604f4e9fc4cf4e9aed8390a4a1cf0df47edb5956cc5b667d6c8864e34621c0dae974ea75d6daf1b133165dd
In the name of uniformity use the same error message as argument to
`expect` througout the codebase.
Use "engines don't error" instead of "engines don't err".
f2a6827982 Fix BinaryHeap direction for Taproot Huffman Encoder (Jeremy Rubin)
cccd75d004 Fix Weighting Addition to never error on overflow + prevent overflows from ever happening with wider integers (Jeremy Rubin)
Pull request description:
I noticed one cleanup & one bugfix while looking into the huffman algorithm:
1) the cleanup: we can use a u128 to guarantee no overflows, and saturating_add to guarantee reasonable behavior in any case
2) the bug: the binary heap is a max heap so the behavior ends up merging the nodes of the most likely entries repeatedly. a huffman encoder requires merging the least likely elements, so it should be reversed.
ACKs for top commit:
sanket1729:
ACK f2a6827982
dr-orlovsky:
utACK f2a6827982
Tree-SHA512: 07cadb8dd5cc2b7e6ae3ebc2c1639de054e41bcd7f3b7d338a93e77fd200c9591a89915aaae5d9f5313eff3d94032fdfe06d89fda1e2398881b711d149e9afe9
0af5a433b6 Return the correct `LeafVersion` when building a Taproot `ControlBlock` (Alekos Filini)
Pull request description:
ACKs for top commit:
sanket1729:
ACK 0af5a433b6
Tree-SHA512: 6b887e86b32b070a2a42ba1a2309b094c36d5a0b0bbf7d4c49c4fd2d8d2b4a7b1d87da699f1bd5f7116926c590413609a292d900b55c27c6bdbadc408529999f
Dr Maxim Orlovsky
Andrew Poelstra
sanket1729
Jeremy Rubin
Tobin Harding
Riccardo Casatta
KaFai Choi
Martin Habovštiak
Alekos Filini