enable cryptorand analyzer in slasher (#7417)

nogo_config.json

@@ -86,6 +86,7 @@
     "only_files": {
       "beacon-chain/.*": "",
       "shared/.*": "",
+      "slasher/.*": "",
       "validator/.*": ""
     },
     "exclude_files": {

slasher/db/testing/BUILD.bazel

@@ -8,6 +8,7 @@ go_library(
     importpath = "github.com/prysmaticlabs/prysm/slasher/db/testing",
     visibility = ["//slasher:__subpackages__"],
     deps = [
+        "//shared/rand:go_default_library",
         "//shared/testutil:go_default_library",
         "//slasher/db:go_default_library",
         "//slasher/db/kv:go_default_library",

slasher/db/testing/setup_db.go

@@ -3,13 +3,12 @@
 package testing
 
 import (
-	"crypto/rand"
 	"fmt"
-	"math/big"
 	"os"
 	"path"
 	"testing"
 
+	"github.com/prysmaticlabs/prysm/shared/rand"
 	"github.com/prysmaticlabs/prysm/shared/testutil"
 	slasherDB "github.com/prysmaticlabs/prysm/slasher/db"
 	"github.com/prysmaticlabs/prysm/slasher/db/kv"
@@ -17,10 +16,7 @@ import (
 
 // SetupSlasherDB instantiates and returns a SlasherDB instance.
 func SetupSlasherDB(t testing.TB, spanCacheEnabled bool) *kv.Store {
-	randPath, err := rand.Int(rand.Reader, big.NewInt(1000000))
-	if err != nil {
-		t.Fatalf("Could not generate random file path: %v", err)
-	}
+	randPath := rand.NewDeterministicGenerator().Int()
 	p := path.Join(testutil.TempDir(), fmt.Sprintf("/%d", randPath))
 	if err := os.RemoveAll(p); err != nil {
 		t.Fatalf("Failed to remove directory: %v", err)

slasher/detection/testing/BUILD.bazel

@@ -7,6 +7,7 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//shared/params:go_default_library",
+        "//shared/rand:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
     ],
 )

slasher/detection/testing/utils.go

@@ -3,10 +3,9 @@
 package testing
 
 import (
-	"crypto/rand"
-
 	ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
 	"github.com/prysmaticlabs/prysm/shared/params"
+	"github.com/prysmaticlabs/prysm/shared/rand"
 )
 
 // SignedBlockHeader given slot, proposer index this function generates signed block header.
@@ -43,7 +42,8 @@ func BlockHeader(slot uint64, proposerIdx uint64) (*ethpb.BeaconBlockHeader, err
 
 func genRandomByteArray(length int) ([]byte, error) {
 	blk := make([]byte, length)
-	_, err := rand.Read(blk)
+	randGen := rand.NewDeterministicGenerator()
+	_, err := randGen.Read(blk)
 	return blk, err
 }