diff --git a/common/token/token.go b/common/token/token.go
new file mode 100644
index 000000000..73568bcbc
--- /dev/null
+++ b/common/token/token.go
@@ -0,0 +1,13 @@
+package token
+
+import "math/rand"
+
+// Generate returns an alphanumeric token of specified length
+func Generate(length int) string {
+	var chars = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+	b := make([]rune, length)
+	for i := range b {
+		b[i] = chars[rand.Intn(len(chars))]
+	}
+	return string(b)
+}
diff --git a/server/signserver/dsgn_resp.go b/server/signserver/dsgn_resp.go
index 3966af8d6..89b1ed6f9 100644
--- a/server/signserver/dsgn_resp.go
+++ b/server/signserver/dsgn_resp.go
@@ -4,6 +4,7 @@ import (
 	"erupe-ce/common/byteframe"
 	ps "erupe-ce/common/pascalstring"
 	"erupe-ce/common/stringsupport"
+	"erupe-ce/common/token"
 	"erupe-ce/server/channelserver"
 	"fmt"
 	"math/rand"
@@ -18,15 +19,6 @@ func makeSignInFailureResp(respID RespID) []byte {
 	return bf.Data()
 }
 
-func randSeq(n int) string {
-	var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
-	b := make([]rune, n)
-	for i := range b {
-		b[i] = letters[rand.Intn(len(letters))]
-	}
-	return string(b)
-}
-
 func (s *Session) makeSignInResp(uid int) []byte {
 	returnExpiry := s.server.getReturnExpiry(uid)
 
@@ -37,8 +29,8 @@ func (s *Session) makeSignInResp(uid int) []byte {
 	}
 
 	rand.Seed(time.Now().UnixNano())
-	token := randSeq(16)
-	s.server.registerToken(uid, token)
+	sessToken := token.Generate(16)
+	s.server.registerToken(uid, sessToken)
 
 	bf := byteframe.NewByteFrame()
 
@@ -51,7 +43,7 @@ func (s *Session) makeSignInResp(uid int) []byte {
 	bf.WriteUint8(1)                          // entrance server count
 	bf.WriteUint8(uint8(len(chars)))          // character count
 	bf.WriteUint32(0xFFFFFFFF)                // login_token_number
-	bf.WriteBytes([]byte(token))              // login_token
+	bf.WriteBytes([]byte(sessToken))          // login_token
 	bf.WriteUint32(uint32(time.Now().Unix())) // current time
 	if s.server.erupeConfig.DevMode {
 		if s.server.erupeConfig.DevModeOptions.PatchServerManifest != "" && s.server.erupeConfig.DevModeOptions.PatchServerFile != "" {