## Description
TLDR; check for `s.IsOverHalfOrder()` with less steps
Before this PR:
```go
// parse the signature:
signature := signatureFromBytes(sigStr)
// Reject malleable signatures. libsecp256k1 does this check but btcec doesn't.
// see: https://github.com/ethereum/go-ethereum/blob/f9401ae011ddf7f8d2d95020b7446c17f8d98dc1/crypto/signature_nocgo.go#L90-L93
// Serialize() would negate S value if it is over half order.
// Hence, if the signature is different after Serialize() if should be rejected.
modifiedSignature, parseErr := ecdsa.ParseDERSignature(signature.Serialize())
if parseErr != nil {
return false
}
if !signature.IsEqual(modifiedSignature) {
return false
}
```
It's serializing the signature into a new variable and then comparing if both are equal. Inside `Serialize()` we have:
https://github.com/decred/dcrd/blob/5d537320a0fe2357daf444cc12c62680579689da/dcrec/secp256k1/ecdsa/signature.go#L88-L95
```go
// Ensure the S component of the signature is less than or equal to the half
// order of the group because both S and its negation are valid signatures
// modulo the order, so this forces a consistent choice to reduce signature
// malleability.
sigS := new(secp256k1.ModNScalar).Set(&sig.s)
if sigS.IsOverHalfOrder() {
sigS.Negate()
}
```
Before btcec update to v2:
Until btcec update this was simpler because S was exported in the signature: https://github.com/cosmos/cosmos-sdk/commit/ed9cd41396815bd236770f73bb30e083e63e8b64#diff-30a6b594e157a12a28bf8a26f65ab4de1dc3c65c8419e5756f0b9c25d9ce1a93L46
```go
if signature.S.Cmp(secp256k1halfN) > 0 {
return false
}
```
Closes: #XXXX
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Fixes an oversight that hadn't been considered when the build
guards were added to the other files in the same directory, that
this test requires linking with code that hooks into cgo. This change
adds the build guard
+build cgo
Fixes#13266
## Description
Closes: #12894
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## Description
Closes: #12612
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* mainly sdk.int to cosmossdk.io/math
* staking keys
* fumpt
* var-naming linter errors and a fumpt
* Update CHANGELOG.md
* Update .golangci.yml
* Update CHANGELOG.md
* Update test_helpers.go
* Update test_helpers.go
* fumpt and lint
* this lints the db module, and makes it easier to use. It adds breaking name changes
* DBConnection -> Connection
* previous commit contained a merge error
* Update test_helpers.go
* Update test_helpers.go
* db renamings
* merge master
* changelog
* DBWriter -> Writer
* consistent multistore reciever
* standard recievers for multistore v2alpha1
* general cleanup of linting issues
* more linter fixes
* remove prealloc linter
* nolint the secp256k1 import
* nolint the secp256k1 package
* completenolint resulting in a diff that has only nolints
## Description
When locally working with golangci-lint, we can see that there were many deprecation warnings about sdk.Int. This PR resolves that and makes 1-2 other linting related changes. Issue on linting coming next.
This also moves BitCurve to bitCurve.
I expect that this set of changes will require several pull requests, one of them to the settings for the linter.
It also does a gofumpt, because we had various formatting-related linters fail, too.
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## Description
Implements part of #7258
Check some of currently unchecked errors.
- [x] baseapp
- [x] client
- [x] codec
- [x] crypto
- [x] server
- [x] simapp
- [ ] snapshots
- [ ] store
- [x] testutil
- [ ] types
- [ ] modules
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## Description
Closes: #10747
- update secp256k1 cgo fork,
- debug verify bytes
```
benchmark old ns/op new ns/op delta
BenchmarkKeyGeneration-10 407 413 +1.35%
BenchmarkSigning-10 95099 36754 -61.35%
BenchmarkVerification-10 215551 48053 -77.71%
benchmark old allocs new allocs delta
BenchmarkKeyGeneration-10 2 2 +0.00%
BenchmarkSigning-10 83 4 -95.18%
BenchmarkVerification-10 74 1 -98.65%
benchmark old bytes new bytes delta
BenchmarkKeyGeneration-10 96 96 +0.00%
BenchmarkSigning-10 5283 196 -96.29%
BenchmarkVerification-10 3537 32 -99.10%
```
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## Description
Closes: #9914
`NumTrueBitsBefore` was getting out of bound and panicking.
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## Description
Closes: #9404
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## Description
Closes: #10042
Port #10275 to master. This is addressing a regression issue for the previously merged #10061. Changelog entry and tests included in the merged #10061.
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## Description
+ fixing `x/bank/migrations/v44.migrateDenomMetadata` - we could potentially put a wrong data in a new key if the old keys have variable length.
+ linting the code
Putting in the same PR because i found the issue when running a linter.
Depends on: #10112
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## Description
Closes: #10082
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## Description
Draft of: #9705
Started off with changing codec `MarshalYaml` function to directly go from JSON to yaml using the new library. Replaced the only usage of UnmarshalYaml per request.
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## Description
The draft PR #9222Closes: #7108
<!-- Add a description of the changes that this PR introduces and the files that
are the most critical to review. -->
- implement proto definition for `Record`
- rename `Info.go` to `legacyInfo.go` within `keyring` package
- implement CLI `migrate` command that migrates all keys from legacyInfo to proto according to @robert-zaremba migration [algorithm](https://github.com/cosmos/cosmos-sdk/pull/9222/#discussion_r624683839)
- remove legacy keybase entirely.
- add `Migrate` and `MigrateAll` functions in `keyring.go` for single key and all keys migration
- add tests
- fix tests
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## Description
Added missing changelog and updated a `p256Order` comment to remove misleading part.
---
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please add links to any relevant follow up issues.*
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* added low-s normalization to ecdsa secp256r1 signing
* go fmt fixes
* removed else block as golint required
* implement raw signature encoding for secp256r1
* move the creation of signature to after the check for sig string length
* fake commit to re-run checks? (move the creation of signature to after the check for sig string length)
* added a signature test for high s signature that requires sig validation to fail after the valid signature was mutated by extracting and scalar negating its s value
* reordered code to prevent mutated message from being used in sig verify
* added test for successful high_s signature with the ecdsa portion of the publicKey
* Remove comment for self-explanatory code.
Co-authored-by: Robert Zaremba <robert@zaremba.ch>
* Missing quote
Co-authored-by: Robert Zaremba <robert@zaremba.ch>
* Apply minor suggestions from code review
Co-authored-by: Robert Zaremba <robert@zaremba.ch>
* normalize comments for godoc
* refactored p256Order functions as private vars
* Div -> Rsh optimizing time for division
* resolve two code coverage issues; fix some small review issues
* test using private signatureRaw function instead of copying code. Added tests to improve code coverage
Co-authored-by: Aaron Craelius <aaron@regen.network>
Co-authored-by: Robert Zaremba <robert@zaremba.ch>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>
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## Description
Closes: #8700
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- [x] added a changelog entry to `CHANGELOG.md`
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## Description
Closes: #9499
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are the most critical to review. -->
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I have...
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- [x] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
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- [x] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [x] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
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### Reviewers Checklist
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* enable secp256r1 in antehandlers
* Add sig verification benchamrk to find a sigverify fee
* adjust the gas fee
* enable secp256r1 in antehandlers
* Add sig verification benchamrk to find a sigverify fee
* adjust the gas fee
* Update the secp256r1 fee factor
* Update changelog
* regenerate docs
With this change, we'll get details on the number of
allocations performed by code. Later on when we have
continuous benchmarking infrastructure, this change
will prove useful to flag regressions.
Fixes#8459
Co-authored-by: Alessio Treglia <alessio@tendermint.com>
* Add secp256k1 support
* Fix test
* Add test in handler_test
* Use table tests
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
* Remove duplicate print message on keys add command (#7654)
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
* ed25519: use stdlib/crypto types
* use standard package testing
* use crypto/ed25519 instead of golang.org/x/crypto/ed25519
In Go 1.13 the new crypto/ed25519 package implements the Ed25519 signature scheme.
This functionality was previously provided by the golang.org/x/crypto/ed25519 package,
which becomes a wrapper for crypto/ed25519 when used with Go 1.13+.
* use standard package testing for secp256k1 tests
* secp256k1: add cross packages signature checks
* ed25519: rollback the _test package name
* rename underlyingSecp256k1 to btcSecp256k1
* package update
Co-authored-by: Denis Fadeev <denis@fadeev.org>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
Julien Robert
Jacob Gadikian
Julián ToledanoandEzequiel Raynaudo
Facundo Medica
AmauryandAaron Craelius
Elias NaurandMarko
Emmanuel T Odeke
Matt Kocubinski
dependabot[bot]andmarbar3778
Mario Karagiorgas
Robert Zaremba
Jeeyong Um
Luke Rhoads
Andrei Ivasko
Henrik Aasted Sørensen
likhita-809
MD Aleem
Ryan Christoffersenandryanchrypto
technicallytyandtechnicallyty
Cuong Manh Le
Amauryandmergify[bot]
