Commit Graph

508 Commits

Author SHA1 Message Date
Tobin Harding c28808c5a4 Improve rustdocs for KeyPair
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.
2022-06-09 16:17:05 +10:00
Tobin Harding 6842383161 Use fixed width serde impls for keys
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`
2022-06-09 16:09:31 +10:00
Andrew Poelstra 4f7f138797
Merge rust-bitcoin/rust-secp256k1#331: Update the code to edition 2018, and update dependencies
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
2022-06-08 20:53:41 +00:00
Elichai Turkel 39aaac6834
Use new trait TryFrom and do small refactoring 2022-06-07 23:59:43 +03:00
Elichai Turkel 7d3a149ca5
Move more things from the std feature to the alloc feature 2022-06-07 23:59:42 +03:00
Elichai Turkel ebe46a4d4e
Update rand to 0.8 and replace CounterRng with mock::StepRng 2022-06-07 23:59:40 +03:00
Elichai Turkel 626835f540
Update secp256k1 to edition 2018 and fix imports 2022-06-07 23:59:25 +03:00
Andrew Poelstra 6599e24010
Merge rust-bitcoin/rust-secp256k1#441: Derive Hash for Signature
ef7f1972a7 Derive Hash for Signature (Tobin C. Harding)

Pull request description:

  In preparation for deriving `Hash` in miniscript, derive `Hash` on the `ecdsa::Signature`.

  ref: https://github.com/rust-bitcoin/rust-miniscript/issues/226

ACKs for top commit:
  apoelstra:
    ACK ef7f1972a7
  elichai:
    ACK ef7f1972a7

Tree-SHA512: 7313f59971444ae18611adbafe86a09478eddd7357f2b7f3ad3bb1761609b6358b156975086f6c318eb2777018b7b2f44386321108939acbcf2d0a522e7e208e
2022-05-09 23:44:17 +00:00
Tibo-lg 997b4b35a9 Fix depreciation warning typos 2022-05-06 16:12:10 +09:00
Tobin C. Harding ef7f1972a7 Derive Hash for Signature
In preparation for deriving `Hash` in miniscript, derive `Hash` on the
`ecdsa::Signature`.
2022-05-06 13:35:23 +10:00
Andrew Poelstra a30e9bb9ff
Merge rust-bitcoin/rust-secp256k1#430: Add convenience methods for keys
f08276adfc Add convenience methods for keys (Tobin Harding)
b4c7fa0d4e Let the compiler work out int size (Tobin Harding)
c612130864 Borrow secret key (Tobin Harding)

Pull request description:

  We have a bunch of `from_<key>` methods for converting between key types. To make the API more ergonomic to use we can add methods that do the same but called on a variable e.g., once applied the following are equivalent:

  - `let pk = PublicKey::from_keypair(kp)`
  - `let pk = kp.public_key()`

  Do this for `SecretKey`, `PublicKey`, `KeyPair`, and `XOnlyKeyPair`.

  Fixes: #428

  ### Note to reviewers

  - `XOnlyPublicKey` -> `PublicKey` logic is made up by me, I could not work out how to get `libsecp256k1` to do this.
  - Please review the tests carefully, they include assumptions based on my current understanding of the cryptography :)

ACKs for top commit:
  sanket1729:
    ACK f08276adfc. Thanks for going through all the iterations.
  apoelstra:
    ACK f08276adfc

Tree-SHA512: 1503a6e570a3958110c6f24cd6d075fe5694b3b32b91a7a9d332c63aa0806198ff10bdd95e7f9de0cf73cbf4e3655c6826bd04e5044d1b019f551471b187c8ea
2022-04-30 16:21:46 +00:00
Andrew Poelstra 37f4f005d1
Merge rust-bitcoin/rust-secp256k1#429: Misc doc fixes
676a9800df Remove unnecessary panic message (sanket1729)
aa50cc6ced Remove Schnorr word from keypairs (sanket1729)

Pull request description:

  Keypairs are pair of EC points that don't have anything to do with the
  signature algorithm

ACKs for top commit:
  apoelstra:
    ACK 676a9800df
  tcharding:
    ACK 676a9800df

Tree-SHA512: ed3e6f5e821d18641234b308b130271dcd2ec0dd6519a0e9d91564ab8e902b82180d7df377f2bcf08cd3ca1df7ce775422e4a3c386637eaff348e58b033de3ea
2022-04-22 16:55:33 +00:00
Tobin Harding f08276adfc Add convenience methods for keys
We have a bunch of `from_<key>` methods for converting between key types.
To improve the API and make it more ergonomic to use we can add methods
that do the same but can be called on the initial key instead of on the
resulting key's type. E.g. once applied the following are equivalent:

- `let pk = PublicKey::from_keypair(kp)`
- `let pk = kp.public_key()`

Do this for `SecretKey`, `PublicKey`, `KeyPair`, and `XOnlyKeyPair`.
2022-04-04 12:58:46 +10:00
Tobin Harding b4c7fa0d4e Let the compiler work out int size
We have two places in the code where we pass a mutable parity integer
to ffi code. At one callsite we tell the compiler explicitly what type
it is (`::secp256k1_sys::types::c_int`) and at the other call site we
let the compiler figure out the type.

Is one way better than the other? I don't know. But letting the compiler
figure it out seems to make the code easier to read.
2022-04-04 12:50:52 +10:00
Tobin Harding c612130864 Borrow secret key
`SecretKey` implements `Copy` and it is fine to take owneship of it; we
have multiple methods called `from_secret_key` and they all borrow the
secret key parameter. Favour consistency over perfection.

Borrow secret key parameter as is done in other `from_secret_key`
methods.
2022-04-04 12:50:52 +10:00
junderw f93ca81348
Add sign_ecdsa_with_noncedata and sign_ecdsa_recoverable_with_noncedata 2022-03-22 21:13:31 +09:00
sanket1729 676a9800df Remove unnecessary panic message
1) All types in rust should have the guarantee that well-formed data is
stored in SecretKey type. Therefore, IMO the panic message is
unnecessary.
2022-03-21 16:37:15 -07:00
sanket1729 aa50cc6ced Remove Schnorr word from keypairs
Keypairs are pair of EC points that don't have anything to do with the
signature algorithm
2022-03-21 16:36:58 -07:00
Tobin Harding de65fb2f1e
Implement de/serialization for SharedSecret
As we do for other keys implement serde de/serialization for the
`SharedSecret`. Includes implementation of `from_slice` method that is
the borrowed version of `from_bytes` as well as a `FromStr`
implementation that parses a hex string.
2022-03-12 07:46:21 +11:00
Dominik Spicher 9be8e74107 Allow SharedSecret to be created from byte array
This was accidentally removed in 8b2edad. See also the discussion
on https://github.com/rust-bitcoin/rust-secp256k1/pull/402
2022-03-10 22:38:25 +01:00
Andrew Poelstra f3d48a298e update "should terminate abnormally" test to trigger a different ARG_CHECK
We can no longer produce non-verification context objects, so instead produce
an invalid public key.
2022-03-08 19:45:43 +00:00
Andrew Poelstra 8294ea3f50 secp256k1-sys: update upstream library
Two API changes needed to be reflected: schnorrsig_sign and schnorrsig_verify.

Also bump both Cargo.toml files
2022-03-08 19:45:41 +00:00
Tobin Harding 7b91f9d8ef
Remove schnorrsig from test names
Recently we moved from using the identifier 'schnorrsig' to 'schnorr',
we omitted to update the tests.

While we are at it use more idiomatic Rust unit test names (i.e., do not
start test name with `test_` because it stutters when the name is read
in output of `cargo test`).
2022-03-04 14:28:29 +00:00
Tobin Harding 4b840ffe87
Remove schnorrsig from helper method
Recently we moved from using the identifier 'schnorrsig' to 'schnorr',
we omitted to update a helper function.
2022-03-04 14:28:28 +00:00
Tobin Harding 79770e17f3
Deprecate SCHNORRSIG_SIGNATURE_SIZE
Recently we moved from using the identifier 'schnorrsig' to 'schnorr',
we omitted to update the schnorr signature size constant.

Deprecate `SCHNORRSIG_SIGNATURE_SIZE` and add
`SCHONORR_SIGNATURE_SIZE`.
2022-03-04 14:28:24 +00:00
Tobin Harding 7a417fd1c5
Deprecate SCHNORRSIG_PUBLIC_KEY_SIZE
Recently we moved from using the identifier 'schnorrsig' to 'schnorr',
we omitted to update the schnorr public key size constant.

Deprecate `SCHNORRSIG_PUBLIC_KEY_SIZE` and add
`SCHONORR_PUBLIC_KEY_SIZE`.
2022-03-04 14:27:58 +00:00
Andrew Poelstra dc90a43e68
Merge rust-bitcoin/rust-secp256k1#403: `Parity` conversion and error handling cleanup
5acf6d23d3 `Parity` conversion and error handling cleanup (Martin Habovstiak)

Pull request description:

  This removes the deprecated `From` conversion, replaces it with
  `TryFrom`, and adds more convenience conversions. A new error type is
  created for the invalid parity error with conversion to catch-all
  `Error`.

  This is intended for an API-breaking version.

ACKs for top commit:
  apoelstra:
    ACK 5acf6d23d3

Tree-SHA512: 49b73fc90455c172012b46f36eafa7d256b940f4b431b4eedb577ab07d9402eae40af931e00b3c409bbe502dbcac064a742e874a5e8bedd8d0cbe92a468ae4f6
2022-03-01 13:01:15 +00:00
Martin Habovstiak 5acf6d23d3 `Parity` conversion and error handling cleanup
This removes the deprecated `From` conversion and adds a new error
type for the invalid parity error with a conversion to the catch-all
`Error`.
2022-02-28 20:59:51 +01:00
Tobin Harding cf6badf96a
Obfuscate SharedSecret when printing
Currently printing the `SharedSecret` using `Display` or `Debug` prints
the real secret, this is sub-optimal. We have a solution for other
secrets in the project where printing is obfuscated and we provide a
`display_secret` method for explicitly printing.

Mirror the logic for other secrets and obfuscate the `SharedSecret` when printing.
2022-02-28 07:22:17 +00:00
Tobin Harding e4be664d97
Improve rustdocs for displaying secrets
Improve rustdocs on `display_secret` by doing:

- Minor improvements to the rustdocs to aid readability in the editor.
- Do not guarantee (`assert_eq!`) debug output
2022-02-28 07:16:41 +00:00
Tobin Harding 5c7c76eb74
Rename serialize_secret -> secret_bytes
The `serialize_secret` method is a getter method, it does not do any
serialisation. However we use the method on secret keys and key types so
in order for the name to be uniform use the descriptive name
`secret_bytes`.

Rename `serialize_secret` to be `secret_bytes`.
2022-02-28 07:11:24 +00:00
Tobin Harding 4ded2c0478
Use byte instead of i
The identifier `i` is predominantly used for indexing an array but we
are using it as a place holder for the iterated value of an array that
is then printed. The identifier `byte` is more descriptive.

Done in preparation for adding similar code to the `ecdh` module.
2022-02-24 19:48:23 +00:00
Tobin Harding 91106f5685
Remove magic number
In array initialisation we use magic number 64, this is the secret bytes
length multiplied by 2.

Please note; we still use the magic number 32, left as such because it
is used in various ways and its not immediately clear that using a
single const would be any more descriptive.

Use `SECRET_KEY_SIZE * 2` instead of magic number 64.
2022-02-24 19:48:19 +00:00
Tobin Harding 6dca99631f
Mention bitcoin_hashes in obfuscated secret msg
Hashing the debug output for secrets can be done with `bitcoin_hashes`
not just `std`. Mention this in the obfuscated string output when
neither are available.
2022-02-24 19:48:15 +00:00
Andrew Poelstra 8b2edad041
Merge rust-bitcoin/rust-secp256k1#402: Limit SharedSecret to 32 byte buffer
5603d71ad3 Limit SharedSecret to 32 byte buffer (Tobin Harding)
d5eeb099ad Use more intuitive local var numbering (Tobin Harding)
834f63c26c Separate new_with_hash into public function (Tobin Harding)

Pull request description:

  Currently `SharedSecret` provides a way to get a shared secret using SHA256 _as well as_ a way to use a custom hash function to get the shared secret. Internally `SharedSecret` uses a 256 byte buffer, this is a tad wasteful. We would like to keep the current functionality but reduce memory usage.

  - Patch 1: Pulls the `new_with_hash` logic out into a standalone public function that just returns the 64 bytes representing the x,y co-ordinates of the computed shared secret point. Callers are then responsible for hashing this point to get the shared secret (idea by @Kixunil, thanks).
  - Patch 2: Does trivial refactor
  - Patch 3: Uses a 32 byte buffer internally for `SharedSecret`. This is basically a revert of the work @elichai did to add the custom hashing logic. @elichai please holla if you are not happy with me walking all over this code :)

  ### Note to reviewers

  Secret obfuscation is done on top of this in https://github.com/rust-bitcoin/rust-secp256k1/pull/396, they could be reviewed in order if this work is of interest to you.

ACKs for top commit:
  apoelstra:
    ACK 5603d71ad3

Tree-SHA512: 48982a4a6a700a111e4c1d5d21d62503d34f433d8cb303d11ff018d2f2be2467fa806107018db16b6d0fcc5ff1a0325dd5790c62c47831c7cd2141a1b6f9467d
2022-02-24 15:17:44 +00:00
Andrew Poelstra c7d6cdbaba
Merge rust-bitcoin/rust-secp256k1#401: Breaking: changed Parity serialization to u8
e6cb588a23 Breaking: changed `Parity` serialization to `u8` (Martin Habovstiak)

Pull request description:

  Serializing the value as `u8` is more compact but this is a breaking
  change.

  `Visitor` was renamed to avoid hungarian notation and maybe allow other
  integers in the future.

  For next major version, depends on #400

ACKs for top commit:
  tcharding:
    tACK e6cb588
  apoelstra:
    ACK e6cb588a23

Tree-SHA512: 1432a2f3c913c3a7eaec5228fd2dd4e8320d828128bec71812cbf56dd8950c969ed22c69867402eb9e820127868d29b291f3374c6e15de0a3ff2341420c4bbab
2022-02-24 15:16:21 +00:00
Tobin Harding 5603d71ad3
Limit SharedSecret to 32 byte buffer
The `SharedSecret` uses sha256 to hash the secret, this implies the
secret is 32 bytes of data.

Currently we use a buffer of 256 bytes, this is unnecessary.

Change the implementation of `SharedSecret` to use a 32 byte buffer.
2022-02-21 13:33:17 +00:00
Tobin Harding d5eeb099ad
Use more intuitive local var numbering
In test code we use multiple pub/sec keys. It is more intuitive if the
'secret 1' is generated by the owner of secret key 1.

Refactor only, no logic changes.
2022-02-21 13:11:30 +00:00
Tobin Harding 834f63c26c
Separate new_with_hash into public function
In preparation for simplifying the `SharedSecret` internals pull the
`new_with_hash` function logic out into a standalone public function
that provides similar functionality without use of the `SharedSecret`
struct. Function now returns the 64 bytes of data representing a shared
point on the curve, callers are expected to the hash these bytes to get
a shared secret.
2022-02-18 09:51:06 +00:00
Andrew Poelstra 2a25e5eae8 restore `global-context-less-secure` feature 2022-02-16 23:46:52 +00:00
Tobin Harding 4c9bab9f6e
Remove explicit mention of feature requirements
We are using `cfg_attr` to instruct the rustdocs build system to
highlight feature requirements for functions, there is no need to
explicitly mention feature requirements in the text.
2022-02-11 07:47:52 +00:00
Tobin Harding 806eaca5f1
Use feature std with rand-std
Recently we fixed a bunch of feature gates to use `rand-std` instead
of `rand` but in doing so did not notice that the same feature gates
were using `alloc` which is meaningless if `std` is enabled.

Feature gate on `std` if we are using `rand-std`.
2022-02-11 07:44:16 +00:00
Andrew Poelstra df7520e951
Merge rust-bitcoin/rust-secp256k1#340: Improve documentation
c73eb2f391 Use 'extra' instead of 'cheap' (Tobin Harding)
c79eb976ca Remove unnecessary explanation (Tobin Harding)
f95e91a6da Use isn't instead of shouldn't (Tobin Harding)
c9e6ca1680 Use rust-bitcoin module doc style (Tobin Harding)
3fa6762437 Add link to referenced commit (Tobin Harding)
f5e68f3ba7 Add ticks around code snippet (Tobin Harding)
d25431c1da Use 3rd person tense for function docs (Tobin Harding)
c3be285c1d Fix size constant docs (Tobin Harding)
5e07e7596b Add period to sentences (Tobin Harding)
269bde042f Remove unnecessary capitalisation (Tobin Harding)

Pull request description:

  In a continued effort to find my feet around here, and inspired by issue #128 I've done a codebase wide audit of the docs (primarily just rustdocs but I glanced at `//` docs as well). Each change is in a separate commit so can be removed if resistance is met. (_"resistance is futile"_).

  I've based the stylistic decisions on [work done](https://github.com/rust-bitcoin/rust-bitcoin/pull/704) in rust-bitcoin.

  I believe the only controversial change is the last (commit: da161c9 Use rust-bitcoin module doc style), please review that one carefully.

ACKs for top commit:
  apoelstra:
    ACK c73eb2f391

Tree-SHA512: 5ea215de3fd23ca2a4f25d8f8d59a85a299044fe495269c43b621291ea50c58856fa8544e36cc109b7bdb1a7a59bcab8711f30113572ddce4509d3b06ff0d3b6
2022-02-10 15:42:30 +00:00
Tobin Harding c73eb2f391
Use 'extra' instead of 'cheap'
The word 'extra' better describes the sidechannel resistance gained by
re-randomising the context.
2022-02-10 09:57:15 +00:00
Tobin Harding c79eb976ca
Remove unnecessary explanation
The nested pub inside a private module is easy to understand, we do not
need an explanation.
2022-02-10 09:55:41 +00:00
Tobin Harding f95e91a6da
Use isn't instead of shouldn't
This definitely isn't possible, change the phrase.
2022-02-10 09:54:35 +00:00
Martin Habovstiak e6cb588a23 Breaking: changed `Parity` serialization to `u8`
Serializing the value as `u8` is more compact but this is a breaking
change.

`Visitor` was renamed to avoid hungarian notation and maybe allow other
integers in the future.
2022-02-09 20:46:20 +01:00
Martin Habovstiak 662843e73b Improved error handling in `Parity` serde impl
* Fixes error message to be according to the trait documentation
* Uses `unexpected_value` to provide more information about the error
2022-02-09 20:42:12 +01:00
Andrew Poelstra 8bf29271de
Merge rust-bitcoin/rust-secp256k1#399: Clarified conversions between `Parity` and integers
705c9cfbc1 Clarified conversions between `Parity` and integers (Martin Habovstiak)

Pull request description:

  This was discussed in https://github.com/rust-bitcoin/rust-secp256k1/pull/390#issuecomment-1033018430

ACKs for top commit:
  apoelstra:
    ACK 705c9cfbc1

Tree-SHA512: 3ba2ec566099c3c6d1c6f830e4959312b818b8766d924e3d995e6b23bd196ab747cc03d46f494ef451569188b0163f53e3236cacd20bfae9118ee76bcdbc9c02
2022-02-09 18:36:19 +00:00
Andrew Poelstra f97e41ae21
Merge rust-bitcoin/rust-secp256k1#398: Implement LowerHex and Display for Message
a209836a99 Implement LowerHex and Display for Message (Tobin Harding)

Pull request description:

  Implement `fmt::LowerHex` for `Message`. Implement `Display` by calling `LowerHex`.

  Resolves: #251

ACKs for top commit:
  apoelstra:
    ACK a209836a99

Tree-SHA512: 64eeafc57ea2814108228d8427cd650076eb3cbb85ae14a7c5a6f39f5e20ca9b83b4ccc27c201668fd57a34fde0a37be4098aa5c602208a81a2018293b40b64d
2022-02-09 18:33:34 +00:00
Andrew Poelstra bc278fa351
Merge rust-bitcoin/rust-secp256k1#393: Add custom Debug impl for RecoverableSignature
4c43d5e20f Add custom Debug impl for RecoverableSignature (Tobin Harding)

Pull request description:

  Currently when debug printing the `RecoverableSignature` we do so byte by byte, this means that the output differs depending on the endianess of the machine. If instead we serialize the signature in compact form then the output is the same irrespective of the endianess.

  With this applied the following two commands now pass:

  ```
  cargo test test_debug_output --features=recovery
  ```
  ```
  cross test --target powerpc-unknown-linux-gnu test_debug_output --features=recovery
  ```

  Fixes: #375

ACKs for top commit:
  apoelstra:
    ACK 4c43d5e20f

Tree-SHA512: 073c2e0e23ce41a2b35f1b1193b07a755b726bf565d61e6bcb23b6bdaab31ba3591f31aa92230b07f7dfc018de0401eba09a6858dc261e66dacb331355f40d76
2022-02-09 18:31:33 +00:00
Andrew Poelstra b8615e2132
Merge rust-bitcoin/rust-secp256k1#397: Fix example dependency list
3c9dd2fb32 Fix example dependency list (Tobin Harding)

Pull request description:

  Example relies on `rand-std` not plain `rand` dependency.

  I do not understand why the following command passes without this patch
  applied

  ```
  cargo test --no-default-features --features=std,rand,bitcoin_hashes
  ```

  But if we put the same code in a standalone binary it fails as expected?

  Since the running of this test is _unusual_ and it is primarily meant as
  an entry point example to the library, remove the mention of "alloc"
  feature and just depend upon "std".

  Fixes: #395

ACKs for top commit:
  apoelstra:
    ACK 3c9dd2fb32

Tree-SHA512: 8e7ec7ac846e2916c29b74c7485650e5242ae1141c12c69b50d74efdfee71c11a52cd454231d2a7cdd6f8f683d3ba4369f9bf898a6b9351dc92c2a4e2bd626cd
2022-02-09 18:26:58 +00:00
Martin Habovstiak 705c9cfbc1 Clarified conversions between `Parity` and integers 2022-02-09 15:33:25 +01:00
Tobin Harding a209836a99
Implement LowerHex and Display for Message
Implement `fmt::LowerHex` for `Message`. Implement `Display` by calling
`LowerHex`.

Resolves: #251
2022-02-09 09:22:07 +00:00
Tobin Harding eb453b8227
Add global context API
Our API often involves a `Secp256k1` parameter, when users enable the
`global-context` feature they must then pass `SECP256K1` into these
functions. This is kind of clunky since the global is by definition
available everywhere.

Make the API more ergonomic for `global-context` builds by adding
various API functions/methods that use the global context implicitly.
2022-02-09 09:09:06 +00:00
Tobin Harding 3ecb5e41b3
Refactor from_secret_key definition
The `from_secret_key` method definition currently uses non-standard
indentation.

Improve uniformity by using 'standard' indentation.
2022-02-09 09:04:13 +00:00
Tobin Harding e2d47a29e2
Remove unnecessary import statement
The global context is already in scope in tests since we use a glob
import. No clue why Clippy does not warn for this.

Remove unnecessary import statement in test function.
2022-02-09 08:53:31 +00:00
Tobin Harding d79989bc95
Remove erroneous duplicate feature
When we removed the "global-context-less-secure" a duplicate feature
snuck in, remove it.
2022-02-09 08:53:31 +00:00
Tobin Harding c9e6ca1680
Use rust-bitcoin module doc style
Recently we introduced uniform styling for module docs over in
`rust-bitcoin` repo. We can do the same here but its a bit controversial
because it removes the heading from module docs and every single public
module in rust-secp256k1 uses a heading. Instead we use a full
sentences. Also makes uniform the trailing `//!`.
2022-02-09 07:31:55 +00:00
Tobin Harding 3fa6762437
Add link to referenced commit
To save devs looking up the commit themselves add a link to it in the
rustdoc.
2022-02-09 07:31:55 +00:00
Tobin Harding f5e68f3ba7
Add ticks around code snippet
For added clarity add ticks around words that are code.
2022-02-09 07:31:54 +00:00
Tobin Harding d25431c1da
Use 3rd person tense for function docs
As is typical in the Rust ecosystem use the third person tense when
documenting functions. E.g.,

```
/// Creates a new Foo.
```
As opposed to

```
/// Create a new Foo.
```
2022-02-09 07:31:54 +00:00
Tobin Harding c3be285c1d
Fix size constant docs
Make all the various size constant docs uniform by using form 'The size
...' and also by ending with a period.
2022-02-09 07:31:54 +00:00
Tobin Harding 5e07e7596b
Add period to sentences
Add the terminating period to all docs sentences. (Also one instance of
capitialize initial character in sentence.)
2022-02-09 07:31:53 +00:00
Tobin Harding 269bde042f
Remove unnecessary capitalisation
'context' does not need need a capital letter in the middle of a
sentence.
2022-02-09 07:29:45 +00:00
Tobin Harding 3c9dd2fb32
Fix example dependency list
Example relies on `rand-std` not plain `rand` dependency.

I do not understand why the following command passes without this patch
applied

```
cargo test --no-default-features --features=std,rand,bitcoin_hashes
```

But if we put the same code in a standalone binary it fails as expected?

Since the running of this test is _unusual_ and it is primarily meant as
an entry point example to the library, remove the mention of "alloc"
feature and just depend upon "std".
2022-02-09 06:35:54 +00:00
Tobin Harding 4c43d5e20f
Add custom Debug impl for RecoverableSignature
Currently when debug printing the `RecoverableSignature` we do so byte
by byte, this means that the output differs depending on the endianess
of the machine. If instead we serialize the signature in compact form
then the output is the same irrespective of the endianess.

With this applied the following two commands now pass:

```
cargo test test_debug_output --features=recovery

```
cross test --target powerpc-unknown-linux-gnu test_debug_output --features=recovery
```

Fixes: #375
2022-02-08 08:14:30 +00:00
Andrew Poelstra ecb62612b5
Merge rust-bitcoin/rust-secp256k1#391: Add example to SharedSecret
b3503ba148 Add example to SharedSecret (Tobin Harding)

Pull request description:

  Currently the rustdoc on `SharedSecret` is wildly incorrect (possibly a cut'n'pasta error).

  Fix the rustdoc for `SharedSecret` and add an examples section to assist testing the public API.

  Fixes: #249

ACKs for top commit:
  apoelstra:
    ACK b3503ba148

Tree-SHA512: 650092388099bb415c11ea335ca6b64c90094f1a51ceecc403911316ee62da0279488af6fa66e00ee5269c129f06d4641085f8ab9be91c98d24a7a4449d235c2
2022-02-04 14:14:48 +00:00
Tobin Harding b3503ba148 Add example to SharedSecret
Currently the rustdoc on `SharedSecret` is wildly incorrect (possibly a
cut'n'pasta error).

Fix the rustdoc for `SharedSecret` and add an examples section to assist
testing the public API.

Fixes: 249
2022-02-04 11:55:06 +11:00
Tobin Harding 8339ca5706 Add documentation guiding users towards randomization
Now that we opportunistically randomize the context on creation if
`rand-std` is enabled it would be nice to encourage users who do not
wish to use `rand-std` to randomize the context. We already have an API
to do this but it requires a separate call to do so. Instead of adding a
bunch of additional constructors elect to add documentation to the
current constructors guiding users towards randomization.
2022-02-04 08:36:15 +11:00
Tobin Harding cf1496b64e Add documentation about rand-std feature
We recently implemented opportunistic randomization of the context
object if the the `rand-std` feature is enabled. Both for the global
context and also for signing context constructors.

Add documentation about `rand-std` feature in relation to the context
object.
2022-02-04 08:36:15 +11:00
Tobin Harding 1693d51ce7 Randomize context on creation
Randomize context on creation if `rand-std` feature is enabled.
2022-02-04 08:36:03 +11:00
Tobin Harding a0465ea279 Remove feature global-context-less-secure
Instead of providing a mechanism for users to opt out of randomization
we can just feature gate the call site i.e., opportunistically randomize
the global context on creation if `rand-std` feature is enabled.
2022-02-04 08:34:39 +11:00
Andrew Poelstra 7a3736a0f9
Merge rust-bitcoin/rust-secp256k1#389: On key-generation example (documentation), "rand" should be "rand-std" instead
2732891359 Change rand to rand-std in lib.rs documentation (Vincent Liao)

Pull request description:

  I copy-pasted the key-generation example written on the documentation, but it didn't work. It only worked when I used the feature `rand-std` instead of `rand`.

  To reproduce, boot up a new Rust project, and add this to main.rs:

  ```
  use secp256k1::rand::rngs::OsRng;
  use secp256k1::{Secp256k1, Message};
  use secp256k1::hashes::sha256;

  let secp = Secp256k1::new();
  let mut rng = OsRng::new().expect("OsRng");
  let (secret_key, public_key) = secp.generate_keypair(&mut rng);
  let message = Message::from_hashed_data::<sha256::Hash>("Hello World!".as_bytes());

  let sig = secp.sign_ecdsa(&message, &secret_key);
  assert!(secp.verify_ecdsa(&message, &sig, &public_key).is_ok());
  ```

  Using this dependencies causes error: `secp256k1 = {version="0.21.2", features=["rand", "bitcoin_hashes"]}`. After replacing `rand` with `rand-std`, it works.

ACKs for top commit:
  apoelstra:
    ACK 2732891
  tcharding:
    tACK 2732891359

Tree-SHA512: 6b5436bc71bab7535e432e119679bc6bcb11d2575b609e039cc25c122ae92b528f95a673e9c643a6cfa2ee3a663f7efdd61731b6084261c52a220448b6f72d12
2022-02-03 15:10:37 +00:00
Tobin Harding c30026d08b Fix typo 'epected' -> 'expected'
Fix minor spelling mistake in code comments.
2022-02-03 08:36:36 +11:00
Tobin Harding f3688ecf56 Use rand-std in key rustdoc examples
Seems there is a bug in cargo, the tests in `key.rs` run successfully
but AFAICT they should fail. Here is an example, running `cargo test
--features=rand` should make this test fail but it doesn't?
```
/// Secret 256-bit key used as `x` in an ECDSA signature.
///
/// # Examples
///
/// Basic usage:
///
/// ```
/// # #[cfg(all(feature = "rand", any(feature =  "alloc", feature = "std")))] {
/// use secp256k1::{rand, Secp256k1, SecretKey};
///
/// let secp = Secp256k1::new();
/// let secret_key = SecretKey::new(&mut rand::thread_rng());
/// # }
/// ```

Anywho, use the correct feature gate: `rand-std`.
2022-02-01 15:21:30 +11:00
Tobin Harding ae3e06f95b Fix lint warnings in test code
Various combinations of features trigger lint warnings for unused code,
all warnings are caused by incorrect feature gating.

Correct feature gating to remove Clippy warnings during testing.
2022-02-01 15:21:30 +11:00
Tobin Harding c01cd8f1f3 Enable running tests without default features
Currently various features fail to build when enabled without default
features. This is because many tests need feature gating.

Feature gating the import statements quickly turns into spaghetti when
trying to cover all combinations of two features correctly, instead just
allow unused imports on `tests` modules where needed.

Add correct feature requirements to the examples so they also can be run
without default features.

Improve the CI script by doing:

- Add `std` to the feature matrix.
- Add `--no-default-features` to test runs in the CI script.
2022-02-01 15:20:44 +11:00
Tobin Harding 433c350424 Add multiple implementations of Debug for secrets
The `Debug` implementation for secrets is feature gated on `std` because
it uses a hasher from `std`. If `bitcoin_hashes` is enabled we can use
it for hashing. If neither `std` nor `bitcoin_hashes` is enabled fall
back to outputting:

<secret requires std or bitcoin_hashes feature to display>

Remove the docs conditional since we now implement `Debug` always.
2022-02-01 14:51:40 +11:00
Vincent Liao 2732891359 Change rand to rand-std in lib.rs documentation 2022-01-27 23:45:56 +07:00
Andrew Poelstra f7d637e6aa
Merge rust-bitcoin/rust-secp256k1#376: Add examples to `key` module
aa828f01a5 Improve documentation in the key module (Tobin Harding)
9e46d6f122 Add examples to types and methods in key module (Tobin Harding)
a7f3d9bcfd Improve key module docs (Tobin Harding)
6d23614467 Improve lib.rs rustdocs (Tobin Harding)
4c4268f1ad Improve docs on method generate_keypair (Tobin Harding)

Pull request description:

  This PR is an initial attempt to more thoroughly test our public API.

  Add examples to various types/methods/functions in the key module.

  I'm not entirely sure when is enough, do we want an example on every single public method, function, and type or is this overkill. In this PR I tried to find a balance by doing ever method/function that took an argument that is a custom type from this lib. I think this should be extended to include return values too though ...

  Thanks to @thomaseizinger for the idea!

  First 2 patches are docs improvements to `lib.rs`.

ACKs for top commit:
  apoelstra:
    ACK aa828f01a5

Tree-SHA512: 9383ad263469f98ce7e988d47edc1482a09a0ce82f43d3991bd80aabdf621430f4a3c86be4debf33232dcb1d60d3e81f2c6d930ea7de7aa0e34b037accd7bc98
2022-01-25 12:34:45 +00:00
Andrew Poelstra 6b515755ab
Merge rust-bitcoin/rust-secp256k1#369: Trivial doc: Warn that serde differs from consensus encoding
52560a9205 Warn that serde differs from consensus encoding (Martin Habovstiak)

Pull request description:

  Addresses https://github.com/rust-bitcoin/rust-bitcoin/pull/756#discussion_r780844146

ACKs for top commit:
  apoelstra:
    ACK 52560a9205

Tree-SHA512: ee56c13dcb0493318f5b59306d6375adb202a5812c4673f0b9abe71fb809b927a74c3fd61aa20fe28fd2176c67f495214bf4da546380dfe9c83b933b02835fff
2022-01-24 15:58:21 +00:00
Tobin Harding aa828f01a5 Improve documentation in the key module
We recently patched much of the docs in the `key` module, lets attempt
to attain perfection.

Improve docs by doing:

- Use full stops
- Use 100 character column width
- Use plural third person tense
- Use plural for section headings
- Fix any grammar mistakes
- Use code ticks and links as appropriate
2022-01-24 14:48:46 +11:00
Tobin Harding 9e46d6f122 Add examples to types and methods in key module
Done in an effort to better test our public API.

Add tests in the `Examples` section as is idiomatic in the Rust
ecosystem.

Make other minor improvements to any rusdocs we touch:
- Use full stops
- Use 100 character column width
- Use plural third person tense
- Use plural for section headings
2022-01-24 14:48:46 +11:00
Tobin Harding a7f3d9bcfd Improve key module docs
Use 'standard' stlye, standard is defined as
- No markdown heading
- Full sentence (capital first letter and full stop)
- Trailing empty comment line
2022-01-24 14:43:44 +11:00
Tobin Harding 6d23614467 Improve lib.rs rustdocs
Improve the main docs by doing:

- Remove unneeded `self` from use statement
- Add code ticks to `bitcoin_hashes`
2022-01-24 14:43:44 +11:00
Tobin Harding 4c4268f1ad Improve docs on method generate_keypair
Improve method docs by doing:

- Remove 'batch' comment
- Remove mention of required features, docs already show this
- Use links to types as well as ticks
2022-01-24 14:43:44 +11:00
Tobin Harding 6fad20ef0c Fix the mess around Parity
Recently we made a wee mess with the `Parity` opaque type. Let's fix it
up by doing:

- Use an enum with variants `Even` and `Odd`.
- Add explicit conversion methods to/from u8 and i32
- Implement `BitXor`

Note: This patch is an API breaking change that does _not_ follow the
deprecation guidelines. Rust does not allow deprecating `From` impl
blocks AFAICT.
2022-01-23 10:33:51 +11:00
Andrew Poelstra a9f0ec2258
Merge rust-bitcoin/rust-secp256k1#381: Fix typo in documentation
47411ce73d Fix typo in documentation (Tobin Harding)

Pull request description:

  Docs reference a function name but there is a typo.

  'grund' -> 'grind'.

ACKs for top commit:
  apoelstra:
    ACK 47411ce73d

Tree-SHA512: e6724f1c7972625d59be0ae9de358295c9280e2e126e7322d706cbdca342c1189552b2fdeef9370ff4f85ea8ef185ef4447f6693979d5e8548fcfa2df41a491e
2022-01-19 18:48:04 +00:00
Tobin Harding 47411ce73d Fix typo in documentation
Docs reference a function name but there is a typo.

'grund' -> 'grind'.
2022-01-19 15:22:37 +11:00
elsirion 1877e4db33
Add serde impl for KeyPair
The impl is added as a module instead of being a direct implementation
since it uses the global context and users should be aware that.
2022-01-18 20:10:11 +01:00
Tobin Harding c7a8bbb772 Use the new recover_ecdsa in bench function
We recently deprecated `recover` in favour of `recover_ecdsa` but missed
one call site in benches.
2022-01-14 13:19:36 +11:00
Andrew Poelstra 7b8392057c
Merge rust-bitcoin/rust-secp256k1#374: Do trivial Clippy fixes
72f5e0441e Do not use deprecated functions (Tobin Harding)
3840ce914b Add Debug/Copy/Clone derives (Tobin Harding)
63ae716e6f Add clippy.toml (Tobin Harding)

Pull request description:

  Add `clippy.toml` and fix a few trivial Clippy warnings.

ACKs for top commit:
  elichai:
    ACK 72f5e04
  apoelstra:
    ACK 72f5e0441e

Tree-SHA512: 5310832d9a4d864a118fef41e275304b912d1c8997060e1eaba95e12700a0b551e846309f9765e10a9a886a03f65b90fcda31d6bf92188791b3c73f97a14e18d
2022-01-12 18:29:23 +00:00
Tobin Harding 72f5e0441e Do not use deprecated functions
Recently we deprecated a bunch of methods/functions. We are still
calling them in test code. Found by Clippy.

Use the shiny new methods/functions instead of the deprecated ones.
2022-01-12 18:56:08 +11:00
Tobin Harding 3840ce914b Add Debug/Copy/Clone derives
Clear Clippy warnings by adding derives to `GlobalContext`.
2022-01-12 18:55:06 +11:00
Tobin Harding 97524b2da7 Deprecate generate_schnorrsig_keypair
We have deprecated all other functions that use the identifier
'schnorrsig' but we missed `generate_schnorrsig_keypair`.

This function is purely a helper function and serves no real purpose
other than to reduce two lines of code to a single line. Downstream
users can write this function themselves if they need it.

Also, we recently added a new public method to `KeyPair` to get the
public key in a slightly more ergonomic fashion. Use `kp.public_key()`
when replacing usage of now deprecated `generate_schnorrsig_keypair`
function.
2022-01-12 18:23:40 +11:00
Tobin Harding 389abddcc7 Add method KeyPair::public_key
Currently to get the `XOnlyPublicKey` from a `KeyPair` users must do
`XOnlyPublicKey::from_keypair(&kp)`. While this does the job we can make
the lib more ergonomic by providing a method directly on `KeyPair` that
calls through to `XOnlyPublicKey::from_keypair`.

Add method `KeyPair::public_key(&self)`.
2022-01-12 18:14:19 +11:00
Martin Habovstiak 52560a9205 Warn that serde differs from consensus encoding
Addresses https://github.com/rust-bitcoin/rust-bitcoin/pull/756#discussion_r780844146
2022-01-10 00:20:06 +01:00
Andrew Poelstra d068fd7d41
Merge rust-bitcoin/rust-secp256k1#365: Fixed docs(rs)
314e8755df Clarify `global-context` feature (Martin Habovstiak)
d52ab85dd5 Added missing features to docs.rs config (Martin Habovstiak)

Pull request description:

  Sadly, I missed two details in #353: features missing in docs.rs configuration and `global-context` being a bit confusing.
  This PR fixes those, see commit messages for details.

ACKs for top commit:
  apoelstra:
    ACK 314e8755df

Tree-SHA512: 01bed8ae2f30adcbdd436b514f08a084492d7f4e1a739ca62e6d8b8547e379c01faeda3522733c27ab615acbb4c6cff60e13906cc88a0d2b90e439e7da517466
2022-01-07 17:31:42 +00:00
Andrew Poelstra fe76cada92
Merge rust-bitcoin/rust-secp256k1#366: Remove capital letter in middle of docs sentence
656f19407b Remove capital letter in middle of docs sentence (Tobin Harding)

Pull request description:

  (Candidate for most trivial patch of all time.)

  Seems to be a typo, change the 'L' to an 'l'.

ACKs for top commit:
  real-or-random:
    ACK 656f19407b

Tree-SHA512: 06a4712868c3195a8465b9cf7bd39e55a30e37574086ca27cb032e0109a8fe053411426a15bcb354642bf78e6420b6fa2789ca487c6cc499f741a11220d5dc22
2022-01-07 17:28:19 +00:00