Initial

backend/internal/csrf/service.go

@@ -0,0 +1,19 @@
+package csrf
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"log/slog"
+)
+
+func generateToken(length int) (string, error) {
+	b := make([]byte, length)
+
+	_, err := rand.Read(b)
+	if err != nil {
+		slog.Error("generate csrf token", slog.String("op", "service.generateToken"), slog.Any("error", err))
+		return "", ErrInternal
+	}
+
+	return base64.RawURLEncoding.EncodeToString(b), nil
+}