[#161] *: Do not use math/rand.Read()

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

checksum/example_test.go

@@ -2,9 +2,9 @@ package checksum
 
 import (
 	"bytes"
+	"crypto/rand"
 	"crypto/sha256"
 	"fmt"
-	"math/rand"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
 )

checksum/test/generate.go

@@ -1,8 +1,8 @@
 package checksumtest
 
 import (
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/checksum"
 )
@@ -11,7 +11,7 @@ import (
 func Checksum() checksum.Checksum {
 	var cs [sha256.Size]byte
 
-	rand.Read(cs[:])
+	_, _ = rand.Read(cs[:])
 
 	var x checksum.Checksum
 

container/id/id_test.go

@@ -1,8 +1,8 @@
 package cid_test
 
 import (
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"

container/id/test/id.go

@@ -1,8 +1,8 @@
 package cidtest
 
 import (
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 )
@@ -11,7 +11,7 @@ import (
 func ID() cid.ID {
 	checksum := [sha256.Size]byte{}
 
-	rand.Read(checksum[:])
+	_, _ = rand.Read(checksum[:])
 
 	return IDWithChecksum(checksum)
 }

crypto/crypto_test.go

@@ -1,7 +1,7 @@
 package frostfscrypto_test
 
 import (
-	"math/rand"
+	"crypto/rand"
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"

eacl/test/benchmark_test.go

@@ -2,7 +2,7 @@ package eacltest
 
 import (
 	"bytes"
-	"math/rand"
+	"crypto/rand"
 	"testing"
 
 	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"

eacl/validator_test.go

@@ -1,7 +1,7 @@
 package eacl
 
 import (
-	"math/rand"
+	"crypto/rand"
 	"testing"
 
 	"github.com/stretchr/testify/require"

netmap/selector_test.go

@@ -1,9 +1,10 @@
 package netmap
 
 import (
+	"crypto/rand"
 	"encoding/binary"
 	"fmt"
-	"math/rand"
+	mrand "math/rand"
 	"sort"
 	"strconv"
 	"testing"
@@ -28,10 +29,10 @@ func BenchmarkHRWSort(b *testing.B) {
 		node.SetPublicKey(key)
 
 		vectors[i] = nodes{node}
-		weights[i] = float64(rand.Uint32()%10) / 10.0
+		weights[i] = float64(mrand.Uint32()%10) / 10.0
 	}
 
-	pivot := rand.Uint64()
+	pivot := mrand.Uint64()
 	b.Run("sort by index, no weight", func(b *testing.B) {
 		realNodes := make([]nodes, netmapSize)
 		b.ResetTimer()

netmap/test/generate.go

@@ -1,7 +1,7 @@
 package netmaptest
 
 import (
-	"math/rand"
+	"crypto/rand"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
 )
@@ -70,7 +70,7 @@ func NetworkInfo() (x netmap.NetworkInfo) {
 // NodeInfo returns random netmap.NodeInfo.
 func NodeInfo() (x netmap.NodeInfo) {
 	key := make([]byte, 33)
-	rand.Read(key)
+	_, _ = rand.Read(key)
 
 	x.SetPublicKey(key)
 	x.SetNetworkEndpoints("1", "2", "3")

ns/nns_test.go

@@ -1,10 +1,10 @@
 package ns
 
 import (
+	"crypto/rand"
 	"errors"
 	"fmt"
 	"math/big"
-	"math/rand"
 	"strings"
 	"testing"
 

object/id/test/generate.go

@@ -1,8 +1,8 @@
 package oidtest
 
 import (
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 
 	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -12,7 +12,7 @@ import (
 func ID() oid.ID {
 	checksum := [sha256.Size]byte{}
 
-	rand.Read(checksum[:])
+	_, _ = rand.Read(checksum[:])
 
 	return idWithChecksum(checksum)
 }

object/search_test.go

@@ -1,8 +1,8 @@
 package object_test
 
 import (
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 	"testing"
 
 	v2object "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"

object/tombstone_test.go

@@ -1,8 +1,8 @@
 package object
 
 import (
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/tombstone"

session/container_test.go

@@ -1,9 +1,10 @@
 package session_test
 
 import (
+	"crypto/rand"
 	"fmt"
 	"math"
-	"math/rand"
+	mrand "math/rand"
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
@@ -396,7 +397,7 @@ func TestContainer_AppliedTo(t *testing.T) {
 func TestContainer_InvalidAt(t *testing.T) {
 	var x session.Container
 
-	nbf := rand.Uint64()
+	nbf := mrand.Uint64()
 	if nbf == math.MaxUint64 {
 		nbf--
 	}

user/id_test.go

@@ -1,7 +1,7 @@
 package user_test
 
 import (
-	"math/rand"
+	"crypto/rand"
 	"testing"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"