move from math/rand to crypto/rand

rand.Seed has been deprecated since Go 1.20 and an alternative has been
available since Go 1.0: Programs that call Seed and then expect a
specific sequence of results from the global random source (using functions such as Int)
can be broken when a dependency changes how much it consumes from the
global random source.

To avoid such breakages, programs that need a specific result
sequence should use NewRand(NewSource(seed))
to obtain a random generator that other packages cannot access

container-engine-lib/lib/backend_impls/docker/docker_network_allocator/docker_network_allocator.go

@@ -3,7 +3,6 @@ package docker_network_allocator
 import (
 	"context"
 	"fmt"
-	"math/rand"
 	"net"
 	"strings"
 	"time"
@@ -51,11 +50,6 @@ type DockerNetworkAllocator struct {
 }
 
 func NewDockerNetworkAllocator(dockerManager *docker_manager.DockerManager) *DockerNetworkAllocator {
-	// NOTE: If we need a deterministic rand seed anywhere else in the program, this will break it! The reason we do this
-	//  here is because it's way more likely that we'll forget to seed the rand when using this class than it is that we need
-	//  a deterministic rand seed
-	rand.Seed(time.Now().UnixNano())
-
 	return &DockerNetworkAllocator{
 		isConstructedViaConstructor: true,
 		dockerManager:               dockerManager,

grpc-file-transfer/golang/grpc_file_streaming/grpc_stream_io_test.go

@@ -2,11 +2,12 @@ package grpc_file_streaming
 
 import (
 	"bytes"
+	"crypto/rand"
 	"fmt"
+	"testing"
+
 	"github.com/kurtosis-tech/stacktrace"
 	"github.com/stretchr/testify/require"
-	"math/rand"
-	"testing"
 )
 
 const (

internal_testsuites/golang/test_helpers/test_helpers.go

@@ -2,18 +2,19 @@ package test_helpers
 
 import (
 	"context"
+	"crypto/rand"
 	"encoding/json"
 	"fmt"
-	"github.com/kurtosis-tech/kurtosis/api/golang/core/lib/starlark_run_config"
 	"io"
-	"math/rand"
 	"net/http"
 	"os"
 	"path"
 	"strings"
 	"testing"
 	"time"
 
+	"github.com/kurtosis-tech/kurtosis/api/golang/core/lib/starlark_run_config"
+
 	"github.com/golang/protobuf/ptypes/empty"
 	"github.com/kurtosis-tech/example-api-server/api/golang/example_api_server_rpc_api_bindings"
 	"github.com/kurtosis-tech/example-api-server/api/golang/example_api_server_rpc_api_consts"