Merge pull request #101 from nspcc-dev/drop-rfc6979

internal: drop rfc6979 dependency

go.mod

@@ -3,11 +3,9 @@ module github.com/nspcc-dev/dbft
 go 1.20
 
 require (
-	github.com/nspcc-dev/rfc6979 v0.2.1
 	github.com/stretchr/testify v1.9.0
 	github.com/twmb/murmur3 v1.1.8
 	go.uber.org/zap v1.27.0
-	golang.org/x/crypto v0.17.0
 )
 
 require (

go.sum

@@ -1,7 +1,5 @@
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/nspcc-dev/rfc6979 v0.2.1 h1:8wWxkamHWFmO790GsewSoKUSJjVnL1fmdRpokU/RgRM=
-github.com/nspcc-dev/rfc6979 v0.2.1/go.mod h1:Tk7h5kyUWkhjyO3zUgFFhy1v2vQv3BvQEntakdtqrWc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
@@ -13,8 +11,6 @@ go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
 go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
 go.uber.org/zap v1.27.0/go.mod h1:GB2qFLM7cTU87MWRP2mPIjqfIDnGu+VIO4V/SdhGo2E=
-golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
-golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

internal/crypto/ecdsa.go

@@ -3,13 +3,13 @@ package crypto
 import (
 	"crypto/ecdsa"
 	"crypto/elliptic"
+	"crypto/rand"
 	"crypto/sha256"
 	"errors"
 	"io"
 	"math/big"
 
 	"github.com/nspcc-dev/dbft"
-	"github.com/nspcc-dev/rfc6979"
 )
 
 type (
@@ -50,7 +50,10 @@ func NewECDSAPrivateKey(key *ecdsa.PrivateKey) dbft.PrivateKey {
 // Sign signs message using P-256 curve.
 func (e ECDSAPriv) Sign(msg []byte) ([]byte, error) {
 	h := sha256.Sum256(msg)
-	r, s := rfc6979.SignECDSA(e.PrivateKey, h[:], sha256.New)
+	r, s, err := ecdsa.Sign(rand.Reader, e.PrivateKey, h[:])
+	if err != nil {
+		return nil, err
+	}
 
 	sig := make([]byte, 32*2)
 	_ = r.FillBytes(sig[:32])

internal/crypto/hash.go

@@ -3,8 +3,6 @@ package crypto
 import (
 	"crypto/sha256"
 	"encoding/hex"
-
-	"golang.org/x/crypto/ripemd160" //nolint:staticcheck // SA1019: package golang.org/x/crypto/ripemd160 is deprecated
 )
 
 const (
@@ -37,12 +35,12 @@ func Hash256(data []byte) Uint256 {
 
 // Hash160 returns ripemd160 from sha256 of data.
 func Hash160(data []byte) Uint160 {
-	h1 := sha256.Sum256(data)
-	rp := ripemd160.New()
-	_, _ = rp.Write(h1[:])
+	var (
+		h1 = sha256.Sum256(data)
+		h  Uint160
+	)
 
-	var h Uint160
-	copy(h[:], rp.Sum(nil))
+	copy(h[:], h1[:Uint160Size])
 
 	return h
 }

internal/crypto/hash_test.go

@@ -19,8 +19,8 @@ var hash160tc = []struct {
 	data []byte
 	hash Uint160
 }{
-	{[]byte{}, parse160("b472a266d0bd89c13706a4132ccfb16f7c3b9fcb")},
-	{[]byte{0, 1, 2, 3}, parse160("3c3fa3d4adcaf8f52d5b1843975e122548269937")},
+	{[]byte{}, Uint160{0xe3, 0xb0, 0xc4, 0x42, 0x98, 0xfc, 0x1c, 0x14, 0x9a, 0xfb, 0xf4, 0xc8, 0x99, 0x6f, 0xb9, 0x24, 0x27, 0xae, 0x41, 0xe4}},
+	{[]byte{0, 1, 2, 3}, Uint160{0x5, 0x4e, 0xde, 0xc1, 0xd0, 0x21, 0x1f, 0x62, 0x4f, 0xed, 0xc, 0xbc, 0xa9, 0xd4, 0xf9, 0x40, 0xb, 0xe, 0x49, 0x1c}},
 }
 
 func TestHash256(t *testing.T) {
@@ -40,11 +40,6 @@ func parse256(s string) (h Uint256) {
 	return
 }
 
-func parse160(s string) (h Uint160) {
-	parseHex(h[:], s)
-	return
-}
-
 func parseHex(b []byte, s string) {
 	buf, err := hex.DecodeString(s)
 	if err != nil || len(buf) != len(b) {