diff --git a/core/common/common.go b/core/common/common.go
index a03c142..9717bbd 100644
--- a/core/common/common.go
+++ b/core/common/common.go
@@ -2,6 +2,7 @@ package common
 
 import (
 	"database/sql"
+	"fmt"
 	"hack-browser-data/log"
 	"hack-browser-data/utils"
 
@@ -67,12 +68,16 @@ func ParseDB() (results []*LoginData) {
 			LoginUrl:    url,
 		}
 		if len(pwd) > 3 {
-			password = utils.Aes128CBCDecrypt(pwd[3:])
+			password, err = utils.Aes128CBCDecrypt(pwd[3:])
+			if err != nil {
+				panic(err)
+			}
 		}
 		loginD.Password = password
 		if err != nil {
 			log.Println(err)
 		}
+		fmt.Printf("%+v\n", loginD)
 		results = append(results, loginD)
 	}
 	return
diff --git a/go.mod b/go.mod
index 467018a..372468e 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module hack-browser-data
 go 1.14
 
 require (
-	github.com/forgoer/openssl v0.0.0-20200331032942-ad9f8d57d8b1
 	github.com/mattn/go-sqlite3 v1.14.0
 	go.uber.org/zap v1.15.0
 	golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9
diff --git a/main.go b/main.go
index 638d71b..5c672ae 100644
--- a/main.go
+++ b/main.go
@@ -5,20 +5,26 @@ import (
 	"hack-browser-data/core/common"
 	"hack-browser-data/log"
 	"hack-browser-data/utils"
+	"os"
 	"runtime"
 )
 
 func main() {
-	err := utils.CopyDB(utils.GetDBPath(utils.LoginData), utils.LoginData)
-	if err != nil {
-		log.Println(err)
-	}
 	osName := runtime.GOOS
 	switch osName {
 	case "darwin":
+		chromePath, err := utils.GetDBPath(utils.LoginData)
+		if err != nil {
+			log.Error("can't find chrome.app in OS")
+		}
+		err = utils.CopyDB(chromePath, utils.LoginData)
+		if err != nil {
+			log.Println(err)
+		}
 		utils.InitChromeKey()
 		common.ParseDB()
 	case "windows":
 		fmt.Println("Windows")
 	}
+	os.Remove(utils.LoginData)
 }
diff --git a/utils/utils_darwin.go b/utils/utils_darwin.go
index a97e470..c567d32 100644
--- a/utils/utils_darwin.go
+++ b/utils/utils_darwin.go
@@ -5,12 +5,10 @@ import (
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/sha1"
-	"fmt"
 	"hack-browser-data/log"
 	"os/exec"
 	"path/filepath"
 
-	"github.com/forgoer/openssl"
 	"golang.org/x/crypto/pbkdf2"
 )
 
@@ -26,12 +24,12 @@ var (
 	chromePass []byte
 )
 
-func GetDBPath(dbName string) string {
+func GetDBPath(dbName string) (string, error) {
 	s, err := filepath.Glob(macChromeDir + dbName)
 	if err != nil && len(s) == 0 {
-		panic(err)
+		return "", err
 	}
-	return s[0]
+	return s[0], nil
 }
 
 func InitChromeKey() {
@@ -47,78 +45,33 @@ func InitChromeKey() {
 		log.Println(err)
 		panic(err)
 	}
-
 	if stderr.Len() > 0 {
 		panic(stderr.String())
 	}
 	// replace /n
 	temp := stdout.Bytes()
 	chromePass = temp[:len(temp)-1]
+	DecryptPass(chromePass)
+}
+
+func DecryptPass(chromePass []byte) {
 	chromeKey = pbkdf2.Key(chromePass, chromeSalt, 1003, 16, sha1.New)
 }
 
-func DecryptPass(chromePass []byte) []byte {
-	l := pbkdf2.Key(chromePass, chromeSalt, 1003, 16, sha1.New)
-	return l
-}
-
-func Aes128CBCDecrypt(encryptPass []byte) string {
-	src, err := openssl.AesCBCDecrypt(encryptPass, chromeKey, iv, openssl.PKCS5_PADDING)
+func Aes128CBCDecrypt(encryptPass []byte) (string, error) {
+	block, err := aes.NewCipher(chromeKey)
 	if err != nil {
-		log.Println(err)
+		return "", err
 	}
-	return string(src)
+	dst := make([]byte, len(encryptPass))
+	mode := cipher.NewCBCDecrypter(block, iv)
+	mode.CryptBlocks(dst, encryptPass)
+	dst = PKCS5UnPadding(dst)
+	return string(dst), nil
 }
 
-func AesDecrypt(ciphertext []byte, key, iv []byte) ([]byte, error) {
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		return nil, err
-	}
-	blockMode := cipher.NewCBCDecrypter(block, iv)
-	origData := make([]byte, len(ciphertext))
-	fmt.Println(blockMode.BlockSize())
-	//func (x *cbcDecrypter) CryptBlocks(dst, src []byte) {
-	//	if len(src)%x.blockSize != 0 {
-	//		panic("crypto/cipher: input not full blocks")
-	blockMode.CryptBlocks(origData, ciphertext)
-	origData = PKCS5UnPadding(origData)
-	return origData, nil
-}
-
-func ZeroPadding(ciphertext []byte, blockSize int) []byte {
-	padding := blockSize - len(ciphertext)%blockSize
-	padtext := bytes.Repeat([]byte{0}, padding)
-	return append(ciphertext, padtext...)
-}
-
-func ZeroUnPadding(origData []byte) []byte {
-	length := len(origData)
-	unpadding := int(origData[length-1])
-	return origData[:(length - unpadding)]
-}
-
-func PKCS5Padding(ciphertext []byte, blockSize int) []byte {
-	padding := blockSize - len(ciphertext)%blockSize
-	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
-	return append(ciphertext, padtext...)
-}
-
-func PKCS5UnPadding(origData []byte) []byte {
-	length := len(origData)
-	// 去掉最后一个字节 unpadding 次
-	unpadding := int(origData[length-1])
-	return origData[:(length - unpadding)]
-}
-
-func PKCS7Padding(ciphertext []byte, blockSize int) []byte {
-	padding := blockSize - len(ciphertext)%blockSize
-	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
-	return append(ciphertext, padtext...)
-}
-
-func PKCS7UnPadding(origData []byte) []byte {
-	length := len(origData)
-	unpadding := int(origData[length-1])
-	return origData[:(length - unpadding)]
+func PKCS5UnPadding(src []byte) []byte {
+	length := len(src)
+	unpadding := int(src[length-1])
+	return src[:(length - unpadding)]
 }