store download & add key

cmd/dkl-local-server/token.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"crypto/rand"
+	"encoding/base32"
+	"log"
+	"net/http"
+
+	"m.cluseau.fr/go/httperr"
+)
+
+func newToken(sizeInBytes int) (token string, err error) {
+	randBytes := make([]byte, sizeInBytes)
+
+	_, err = rand.Read(randBytes)
+	if err != nil {
+		log.Print("rand read error: ", err)
+		err = httperr.New(http.StatusInternalServerError, err)
+		return
+	}
+
+	token = base32.StdEncoding.WithPadding(base32.NoPadding).EncodeToString(randBytes)
+	return
+}