Co-authored-by: Matt Kocubinski <mkocubinski@gmail.com>
Co-authored-by: Marko <marbar3778@yahoo.com>
Co-authored-by: samricotta <37125168+samricotta@users.noreply.github.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>
## Description
closing in on completion of linting
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## Description
fix various linting issues
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## Description
this pr fixes a integer conversion lint issue.
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Noticed while examining a bunch of profiles, that the for loop inside
(*CompactBitArry).NumTrueBitsBefore unnecessarily consumed a bunch of
time:
```shell
7.55s 9.88s (flat, cum) 93.38% of Total
240ms 250ms 88:func (bA *CompactBitArray) NumTrueBitsBefore(index int) int {
. . 89: onesCount := 0
70ms 340ms 90: max := bA.Count()
70ms 70ms 91: if index > max {
. . 92: index = max
. . 93: }
. . 94: // below we iterate over the bytes then over bits (in low endian) and count bits set to 1
2.54s 2.76s 95: for elem := 0; elem < len(bA.Elems); elem++ {
```
but we can use the native for loop that produces indices while iterating
over slices. Just by simply changing the form results in an improvement
```shell
7.50s 9.95s (flat, cum) 94.94% of Total
240ms 320ms 88:func (bA *CompactBitArray) NumTrueBitsBefore(index int) int {
. . 89: onesCount := 0
170ms 420ms 90: max := bA.Count()
90ms 100ms 91: if index > max {
. . 92: index = max
. . 93: }
. . 94: // below we iterate over the bytes then over bits (in low endian) and count bits set to 1
1.49s 1.62s 95: for elem := range bA.Elems {
```
and an improvement in CPU time
```shell
$ benchstat before.txt after.txt
name old time/op new time/op delta
NumTrueBitsBefore/new-8 13.3ns ± 1% 12.5ns ± 1% -6.07% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
NumTrueBitsBefore/new-8 0.00B 0.00B ~ (all equal)
name old allocs/op new allocs/op delta
NumTrueBitsBefore/new-8 0.00 0.00 ~ (all equal)
```
Fixes#13999
## 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: f9401ae011/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:
5d537320a0/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: ed9cd41396 (diff-30a6b594e157a12a28bf8a26f65ab4de1dc3c65c8419e5756f0b9c25d9ce1a93L46)
```go
if signature.S.Cmp(secp256k1halfN) > 0 {
return false
}
```
Closes: #XXXX
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Similar to Tendermint's PR,
https://github.com/tendermint/tendermint/pull/9250
Note that crypto/ledger is not updated in this PR, because if its
dependency on the R and S values being exposed by ParseDERSignature.
Updates #13423
Signed-off-by: Elias Naur <elias@orijtech.com>
Signed-off-by: Elias Naur <elias@orijtech.com>
Co-authored-by: Marko <marbar3778@yahoo.com>
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
* Reduce user password prompts by taking advantage of the already existing MigrateAll function
* Print message when no records were found on the keyring
* Update changelog
* Fix migration test
* Add keys sort
