From 2dc8dae6bd3232e6e7daa11a0267909af878b6b2 Mon Sep 17 00:00:00 2001
From: Emman <emman.sun@cargosmart.com>
Date: Tue, 26 Apr 2022 10:13:17 +0800
Subject: [PATCH] Update comments

---
 zuc/eia.go    | 1 +
 zuc/eia256.go | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/zuc/eia.go b/zuc/eia.go
index d0bd7b3..457d951 100644
--- a/zuc/eia.go
+++ b/zuc/eia.go
@@ -23,6 +23,7 @@ type ZUC128Mac struct {
 }
 
 // NewHash create hash for zuc-128 eia, with arguments key and iv.
+// Both key/iv size are 16 in bytes.
 func NewHash(key, iv []byte) (*ZUC128Mac, error) {
 	k := len(key)
 	ivLen := len(iv)
diff --git a/zuc/eia256.go b/zuc/eia256.go
index bef0ae5..d989d47 100644
--- a/zuc/eia256.go
+++ b/zuc/eia256.go
@@ -16,7 +16,8 @@ type ZUC256Mac struct {
 	len       uint64
 }
 
-// NewHash create hash for zuc-128 eia, with arguments key, iv and tagSize.
+// NewHash256 create hash for zuc-256 eia, with arguments key, iv and tagSize.
+// Key size is 32 in bytes, iv size is 23 in bytes, tagSize supports 4/8/16 in bytes.
 // The larger the tag size, the worse the performance.
 func NewHash256(key, iv []byte, tagSize int) (*ZUC256Mac, error) {
 	k := len(key)