This de-clutters the code and prepares for the next step of adding
`IntoIterator`. The type is still re-exported so the change is neither
breaking nor inconvenient.
This also adds more datialed explanation of `SerializedSignature` and
why it's needed.
65186e732a Add githooks (Tobin C. Harding)
6d76bd4a89 Add clippy to CI (Tobin C. Harding)
9f1ebb93cb Allow nonminimal_bool in unit test (Tobin C. Harding)
685444c342 Use "a".repeats() instead of manual implementation (Tobin C. Harding)
42de876e01 Allow let_and_return for feature guarded code (Tobin C. Harding)
d64132cd4b Allow missing_safety_doc (Tobin C. Harding)
2cb687fc69 Use to_le_bytes instead of mem::transmute (Tobin C. Harding)
c15b9d2699 Remove unneeded explicit reference (Tobin C. Harding)
35d59e7cc6 Remove explicit 'static lifetime (Tobin C. Harding)
1a582db160 Remove redundant import (Tobin C. Harding)
Pull request description:
The first 8 patches clear clippy warnings. Next we add a CI job to run clippy. Finally we add a `githooks` directory that includes running clippy, also adds a section to the README on how to use the githooks. This is identical to the text in the [open PR](https://github.com/rust-bitcoin/rust-bitcoin/pull/1044) on `rust-bitcoin` that adds githooks _without_ yet adding clippy.
**Note**: The new clippy CI job runs and is green :)
ACKs for top commit:
Kixunil:
ACK 65186e732a
apoelstra:
ACK 65186e732a
Tree-SHA512: f70a157896ce2a83af8cfc10f2fbacc8f68256ac96ef7dec4d190aa72324b568d2267418eb4fe99099aeda5486957c31070943d7c209973859b7b9290676ccd7
Add `githooks` directory and:
- Copy the default pre-commit hook into new githooks directory
- Add a call to clippy to the pre-commit hook
- Add a section to the README instructing devs how to use the new
githooks
Clippy emits:
warning: returning the result of a `let` binding from a block
This is due to feature guarded code, add 'allow' attribute. Use
`cfg_attr` to restrict the allow to when it is needed. Add the already
present `unused_mut` inside the `cfg_attr` guard also.
We have a whole bunch of unsafe code that calls down to the FFI layer.
It would be nice to have clippy running on CI, these safety docs
warnings are prohibiting that. Until we can add the docs add a compiler
attribute to allow the lint.
Since we bumped the MSRV we have `to_le_bytes` available now, use it
instead of `mem::transmute`.
Remove code comment suggesting to do exactly this and clear clippy
warning.
While we are at it, use `cast` instead of `as`.
f419fe884b Fix getting parity from keypair in fuzzing (Tim Ruffing)
Pull request description:
This also enables a test that was failung due to the parity bug.
ACKs for top commit:
tcharding:
ACK f419fe884b
elichai:
ACK f419fe884b
apoelstra:
ACK f419fe884b
Tree-SHA512: bec00d517495cf010c37079e3d71f1d9547a319aac50cecbca74e6d62eca7188aa79d61ee3d50ef81512c30a31b61b947e2f19e45a95b1b17a1f5cf7cf3f1019
13af51926a Make key comparison non-fuzzable (Dr Maxim Orlovsky)
739660499b Implement PublicKey ordering using FFI (Dr Maxim Orlovsky)
0faf404f0e Benchmark for key ordering (Dr Maxim Orlovsky)
999d165c68 FFI for pubkey comparison ops (Dr Maxim Orlovsky)
Pull request description:
Re-base #309 for @dr-orlovsky on request by @Kixunil.
To do the rebase I just had to change instances of cfg_attr to use `v0_5_0` instead of `v0_4_1` e.g.,
```
#[cfg_attr(not(rust_secp_no_symbol_renaming), link_name = "rustsecp256k1_v0_5_0_xonly_pubkey_cmp")]
```
And drop the changes to `src/schnorrsig.rs`, all these changes are covered by the changes in `key.rs` I believe.
ACKs for top commit:
Kixunil:
ACK 13af51926a
apoelstra:
ACK 13af51926a
Tree-SHA512: 3054fcbc1707679f54466cdc91162c286394ad691e4f5c8ee18635a22b0854a4e60f1186ef3ca1532aacd8a637d0a153601ec203947e9e58dfcebf1bcb619955
12d4583638 Implement negate that consumes self (Tobin Harding)
5eb2d745b7 Rename tweak_add_assign -> add_tweak (Tobin Harding)
b9d08db8eb Replace _assign with _tweak (Tobin Harding)
Pull request description:
The various `_assign` methods (`add_assign`, `add_expr_assign`, `mul_assign`, `tweak_add_assign`) are cumbersome to use because a local variable that uses these methods changes meaning but keeps the same identifier. It would be more useful if we had methods that consumed `self` and returned the newly modified type.
We notice also that this API is for adding/multiplying tweaks not arbitraryly adding keys.
- Patch 1: Changes add/mul_assign -> add/mul_tweak for `PublicKey` and `SecretKey` (incl. re-working unit tests)
- Patch 2: Changes `tweak_add_assign` -> `add_tweak` for `KeyPair` and `XOnlyPublicKey`
- Patch 3: Changes `negate_assign` -> `negate`
All methods changed include:
- New method consumes self and returns the tweaked key
- Original method remains with a `deprecated` attribute, however I've left a TODO in there for adding the `since` field.
Close: #415
ACKs for top commit:
apoelstra:
ACK 12d4583638
Tree-SHA512: 026e8722892f3a0f18956281e4d2356d2789ef535a7ab71a375758201b180663d068397cde2dca5f60858ab7158069e53d7096326bfbd5a364269b0be680940c
3ca7f499e0 Add fixed-width-serde integration tests (Tobin Harding)
bf9f556225 Add rustdocs describing fixed width serde (Tobin Harding)
c28808c5a4 Improve rustdocs for KeyPair (Tobin Harding)
6842383161 Use fixed width serde impls for keys (Tobin Harding)
Pull request description:
Currently we serialize keys using the `BytesVisitor`, this causes the serialized data to contain additional metadata encoding the length (an extra 8 bytes) when serialized with [bincode.](https://docs.rs/bincode/latest/bincode/index.html). This extra data is unnecessary since we know in advance the length of these two types.
We do not control the data output by serialization of our types because it depends on which crate is used to do the serialization. This PR improves the situation for serialization using the `bincode` crate, and this PR introduces mentions of `bincode` in the rustdocs, is this acceptable? See below for a table that describes binary serialization by other crates.
Implement a sequence based visitor that encodes the keys as fixed width data for:
- `SecretKey`
- `PublicKey`
- `KeyPair`
- `XOnlyPublicKey`
Fixes: #295
**Question**: PR only does keys, do we want to do signatures as well?
ACKs for top commit:
apoelstra:
ACK 3ca7f499e0
Tree-SHA512: 77babce74fa9f0981bb3b869c4e77a68a4d1ec28d22d2c3be4305e27ef01d4828dac210e20b968cbbe5de8a0563cd985d7969bccf75cfe627a34a116fed1a5df
946cd83106 Improve Error display (Tobin C. Harding)
Pull request description:
Introduce `write_err` macro and improve the `Display` implementation on `Error`.
This PR is re-written after review below. The `std::error::Error` implementation is removed in favour of #409. Now only includes the `Display` stuff.
ACKs for top commit:
apoelstra:
ACK 946cd83106 nice!
Tree-SHA512: a62e9593c2ed1ba6136136e6b575219d68c25736069f55448f8411048efae27f2467bcb65260a78ff065de9c8c2994873804c687fb37a55b705cddfe20544f37
Feature guard the custom implementations of `Ord` and `PartialOrd` on
`cfg(not(fuzzing))`. When fuzzing, auto-derive implementations.
Co-authored-by: Tobin C. Harding <me@tobin.cc>
The method `negate_assign` (on pub/sec key) is cumbersome to use because
a local variable that uses these methods changes meaning but keeps the
same identifier. It would be more useful if we had methods that consumed
`self` and returned a new key.
Add method `negate` that consumes self and returns the negated key.
Deprecated the `negate_assign` methods.
We now have a method `add_tweak` on the `SecretKey` and `PublicKey`. We
can add similar methods that consumes self and return the tweaked key
for the `KeyPair` and `XOnlyPublicKey` types.
The justification for doing so is that a local variable that calls
`tweak_add_assign` changes in meaning but the identifier remains the
same, this leads to cumbersome renaming of the local variable.
The tweaking done to the `KeyPair` is actually done via the xonly public
key not the public key. To reflect this call the method
`add_xonly_tweak`, this is similar to how it is named in secp
`secp256k1_keypair_xonly_tweak_add`.
The key methods `add_assign`, `add_expr_assign`, and `mul_assign` are
cumbersome to use because a local variable that uses these methods
changes meaning but keeps the same identifier. It would be more useful
if we had methods that consumed `self` and returned a new key.
Observe also that these to methods are for adding/multiplying a key by a
tweak, rename the methods appropriately.
Add methods `add_tweak`, `add_expr_tweak`, and `mul_tweak` to the
`SecretKey` and `PublicKey` type. Deprecate `add_assign`,
`add_expr_assign`, and `mul_assign`.
The current display code for `Error` is a little unusual. We typically
just implement `Display` and if a `str` is needed use `format!`.
Improve the `Error` type by doing
- Remove the `as_str` function and implement `Display` directly.
- Remove the 'secp: ' prefix of all the error messages.
- Use a newly defined macro `write_err` that writes the error if `std`
feature is not enabled so that no-std builds do not loose error info.
Note: The `write_err` macro is currently being introduced in
`rust-bitcoin` also. Elect to just duplicate it here and not share it
between the crates.
5a0332463d Add `Scalar` newtype and use it in tweaking APIs (Martin Habovstiak)
Pull request description:
This adds `Scalar` newtype to better represent values accepted by
tweaking functions. This type is always 32-bytes and guarantees being
within curve order.
This is an initial iteration. Things I'm not 100% sure of, would appreciate help:
* Is it actually required for scalar to be within curve order?
* Are non-constant-time operations actually an issue?
Alterntive tweaking API designs:
* Accept `Into<Scalar>` generic argument, so people can pass `SecretKey`, may slightly worsen performance
* `unsafe`-ly implement `AsRef<Scalar> for SecretKey` (casting raw pointers) and accept that
Possible extension: API to convert from slices so that the user doesn't need two steps (convert to array first).
ACKs for top commit:
apoelstra:
ACK 5a0332463d
Tree-SHA512: cf639c91f0c6f6e0178d8a6d4125fd041708a59661fbd2f1924881001011e4cfe2b998148ae652995cdc9a3791c6644fcd5f004e059d76d9182a5e409b791446
This adds `Scalar` newtype to better represent values accepted by
tweaking functions. This type is always 32-bytes and guarantees being
within curve order.
Add a `tests` directory. Add `serde` tests for the recently added fixed
width binary serialization code.
Please note, serialization is only fixed width when serialized with
the `bincode` crate.
We recently added fixed width serialization for some types however
serialization is only fixed width when data is serialized with the
`bincode` crate.
Add rustdocs describing fixed width serde to `SecretKey`, `PublicKey`,
and `XOnlyPublicKey` (`KeyPair` is already done).
Currently the rustdocs for `KeyPair` are stale in regards to serde, we
_do_ implement `Serialize` and `Deserialize` for `KeyPair`.
Improve the rustdocs for `KeyPair` by removing stale docs and adding
docs on fixed width binary serialization.
Currently we serialize keys using the `BytesVisitor`, this causes the
serialized data to contain additional metadata encoding the length (an
extra 8 bytes) when serialized with the `bincode` crate. This extra data
is unnecessary since we know in advance the length of these types.
It would be useful for users of the lib to be able to get a fixed width
binary serialization, this can be done but it depends on the crate used
to do the serialization. We elect to optimise for `bincode` and add docs
noting that other binary serialization crates may differ (rustdocs added
in separate patches).
Implement a tuple based visitor that encodes the keys as fixed width
data.
Do fixed width serde implementations for:
- `SecretKey`
- `PublicKey`
- `KeyPair`
- `XOnlyPublicKey`
5d2f1ceb64 Fix WASM build (Elichai Turkel)
39aaac6834 Use new trait TryFrom and do small refactoring (Elichai Turkel)
7d3a149ca5 Move more things from the std feature to the alloc feature (Elichai Turkel)
bc8c713631 Replace c_void with core::ffi::c_void (Elichai Turkel)
26a52bc8c8 Update secp256k1-sys to edition 2018 and fix imports (Elichai Turkel)
ebe46a4d4e Update rand to 0.8 and replace CounterRng with mock::StepRng (Elichai Turkel)
626835f540 Update secp256k1 to edition 2018 and fix imports (Elichai Turkel)
67c0922a46 Update MSRV in CI and Readme from 1.29 to 1.41 (Elichai Turkel)
Pull request description:
As proposed in https://github.com/rust-bitcoin/rust-bitcoin/issues/510#issuecomment-881686342 this PR raises the MSRV to 1.41.1 it also changes the code to be Edition 2018.
The PR contains a few things:
* Moving to edition 2018 and fixing the imports
* Sorting and combining imports to make them more concise
* Replacing our c_void with `core::ffi::c_void`
* Bumping the `rand` version to latest and modifying our `RngCore` implementations accordingly
* Doing some small refactoring and using the new `TryInto` trait where it makes the code nicer
If people prefer I can split this PR into multiple and/or drop some commits
ACKs for top commit:
tcharding:
ACK 5d2f1ceb64
apoelstra:
ACK 5d2f1ceb64
Tree-SHA512: 5bf84e7ebb6286d59f8cada0bb712c46336f0dd6c35b67e6f4ba323b5484ad925b99b73e778ae4608f123938e7ee8705a0aec576cd9c065072c4ecf1248e3470
Martin Habovstiak
Tobin C. Harding
Andrew Poelstra
Tim Ruffing
Dr Maxim Orlovsky
Elichai Turkel