diff --git a/SM4性能优化.md b/SM4性能优化.md
index 07f4b91..054a139 100644
--- a/SM4性能优化.md
+++ b/SM4性能优化.md
@@ -74,3 +74,5 @@ Go语言的对称加密实现分离了加密模式和Block级别的加密，同
     BenchmarkSM4GCMOpen1K-6      	  149971	      7896 ns/op	 129.69 MB/s	       0 B/op	       0 allocs/op
     BenchmarkSM4GCMSign1K-6      	  315027	      3753 ns/op	 272.85 MB/s	       0 B/op	       0 allocs/op
     BenchmarkSM4GCMOpen8K-6      	   19948	     60258 ns/op	 135.95 MB/s	       0 B/op	       0 allocs/op
+
+//TODO: GHASH ASM
\ No newline at end of file