Use CSPRNG in WASM modules (#110)

* Remove unused process.Error type.

* Move process implementation to package csp.

* Use crypto/rand in WASM modules.

go.mod

@@ -42,7 +42,6 @@ require (
 	golang.org/x/sync v0.1.0
 	gopkg.in/alexcesaro/statsd.v2 v2.0.0
 	lukechampine.com/blake3 v1.1.7
-	pgregory.net/rand v1.0.2
 )
 
 require (

go.sum

@@ -500,7 +500,6 @@ github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtX
 github.com/urfave/cli v1.22.10/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/urfave/cli/v2 v2.25.1 h1:zw8dSP7ghX0Gmm8vugrs6q9Ku0wzweqPyshy+syu9Gw=
 github.com/urfave/cli/v2 v2.25.1/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc=
-github.com/valyala/fastrand v1.1.0 h1:f+5HkLW4rsgzdNoleUOB69hyT9IlD2ZQh9GyDMfb5G8=
 github.com/viant/assertly v0.4.8/go.mod h1:aGifi++jvCrUaklKEKT0BU95igDNaqkvz+49uaYMPRU=
 github.com/viant/toolbox v0.24.0/go.mod h1:OxMCG57V0PXuIP2HNQrtJf2CjqdmbrOx5EkMILuUhzM=
 github.com/warpfork/go-wish v0.0.0-20220906213052-39a1cc7a02d0 h1:GDDkbFiaK8jsSDJfjId/PEGEShv6ugrt4kYsC5UIDaQ=
@@ -735,9 +734,6 @@ lukechampine.com/blake3 v1.1.7 h1:GgRMhmdsuK8+ii6UZFDL8Nb+VyMwadAgcJyfYHxG6n0=
 lukechampine.com/blake3 v1.1.7/go.mod h1:tkKEOtDkNtklkXtLNEOGNq5tcV90tJiA1vAA12R78LA=
 nhooyr.io/websocket v1.8.7 h1:usjR2uOr/zjjkVMy0lW+PPohFok7PCow5sDjLgX4P4g=
 nhooyr.io/websocket v1.8.7/go.mod h1:B70DZP8IakI65RVQ51MsWP/8jndNma26DVA/nFSCgW0=
-pgregory.net/rand v1.0.2 h1:ASEbkvwOmY/UPF2evJPBJ8XZg71xdKWYdByqKapI7Vw=
-pgregory.net/rand v1.0.2/go.mod h1:EyNx8APnDE3Svi8sWgUZ5lOiz60cNZUPPBTyzOUpPl4=
-pgregory.net/rapid v0.4.8 h1:d+5SGZWUbJPbl3ss6tmPFqnNeQR6VDOFly+eTjwPiEw=
 sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck=
 sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
 zenhack.net/go/util v0.0.0-20230407221818-ef608d25cf61 h1:yFruEx97FKOfapC6xduBhaL2KlMn8IUD7IP56g1vNxo=

pkg/csp/executor.go

@@ -2,13 +2,13 @@ package csp
 
 import (
 	"context"
+	"crypto/rand"
 	"encoding/hex"
 	"fmt"
 
 	capnp "capnproto.org/go/capnp/v3"
 	"github.com/tetratelabs/wazero"
 	"lukechampine.com/blake3"
-	"pgregory.net/rand"
 
 	wasm "github.com/tetratelabs/wazero/api"
 	api "github.com/wetware/ww/internal/api/process"
@@ -102,7 +102,8 @@ func (wx Server) loadModule(ctx context.Context, args api.Executor_spawn_Params)
 	config := wazero.
 		NewModuleConfig().
 		WithName(name).
-		WithRandSource(rand.New())
+		WithRandSource(rand.Reader)
+
 
 	if mod := wx.Runtime.Module(name); mod != nil {
 		return mod, nil