diff --git a/tools/utils/base85/base85.go b/tools/utils/base85/base85.go
index 3e24e8582..20f28591a 100644
--- a/tools/utils/base85/base85.go
+++ b/tools/utils/base85/base85.go
@@ -11,6 +11,8 @@ import (
 	"io"
 	"strconv"
 	"sync"
+
+	"kitty/tools/utils"
 )
 
 // 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!#$%&()*+-;<=>?@^_`{|}~
@@ -148,13 +150,13 @@ func Encode(dst, src []byte) int {
 func EncodeToString(src []byte) string {
 	buf := make([]byte, EncodedLen(len(src)))
 	Encode(buf, src)
-	return string(buf)
+	return utils.UnsafeBytesToString(buf)
 }
 
 // DecodeString returns the bytes represented by the base85 string s.
 func DecodeString(src string) ([]byte, error) {
 	buf := make([]byte, DecodedLen(len(src)))
-	_, err := Decode(buf, []byte(src))
+	_, err := Decode(buf, utils.UnsafeStringToBytes(src))
 	return buf, err
 }
 
diff --git a/tools/utils/base85/base85_test.go b/tools/utils/base85/base85_test.go
index 395dc185e..86e4c3257 100644
--- a/tools/utils/base85/base85_test.go
+++ b/tools/utils/base85/base85_test.go
@@ -38,6 +38,13 @@ func TestBase85(t *testing.T) {
 	for _, p := range []pair{
 		{"M", "O#"},
 		{"Manual", "O<`_zVQc"},
+		{
+			"Man is distinguished, not only by his reason, but by this singular passion from " +
+				"other animals, which is a lust of the mind, that by a perseverance of delight in " +
+				"the continued and indefatigable generation of knowledge, exceeds the short " +
+				"vehemence of any carnal pleasure.",
+			"O<`^zX>%ZCX>)XGZfA9Ab7*B`EFf-gbRchTY<VDJc_3(Mb0BhMVRLV8EFfZabRc4RAarPHb0BkRZfA9DVR9gFVRLh7Z*CxFa&K)QZ**v7av))DX>DO_b1WctXlY|;AZc?TVIXXEb95kYW*~HEWgu;7Ze%PVbZB98AYyqSVIXj2a&u*NWpZI|V`U(3W*}r`Y-wj`bRcPNAarPDAY*TCbZKsNWn>^>Ze$>7Ze(R<VRUI{VPb4$AZKN6WpZJ3X>V>IZ)PBCZf|#NWn^b%EFfigV`XJzb0BnRWgv5CZ*p`Xc4cT~ZDnp_Wgu^6AYpEKAY);2ZeeU7aBO8^b9HiME&",
+		},
 	} {
 		q := EncodeToString([]byte(p.src))
 		if diff := cmp.Diff(p.encoded, q); diff != "" {