fix encipher return errors

encipher/aes.go

@@ -6,7 +6,6 @@ import (
 	"crypto/cipher"
 	"encoding/base64"
 	"encoding/json"
-	"errors"
 	"strings"
 	"time"
 
@@ -29,7 +28,7 @@ func New() {
 
 func GenerateTokenAes(id uint, identity, client, role string, extend map[string]string) (string, error) {
 	if (JwtSecretLen == 16 || JwtSecretLen == 24 || JwtSecretLen == 32) == false {
-		return "", errors.New("JwtSecret lenght must 16/24/32.")
+		return "", exception.ErrAuthSecret
 	}
 	expireTime := time.Now().Add(vars.JwtExpireDay)
 	claims := types.JwtClaims{
@@ -43,7 +42,7 @@ func GenerateTokenAes(id uint, identity, client, role string, extend map[string]
 
 	byte, err := json.Marshal(claims)
 	if err != nil {
-		return "", err
+		return "", exception.ErrJsonEncode
 	}
 
 	token, err := AesEncryptCBC(byte)
@@ -57,7 +56,10 @@ func AesEncryptCBC(plan []byte) (string, error) {
 
 	// 分组秘钥
 	// NewCipher该函数限制了输入k的长度必须为16, 24或者32
-	block, _ := aes.NewCipher(JwtSecret)
+	block, err := aes.NewCipher(JwtSecret)
+	if err != nil {
+		return "", exception.ErrAuthSecret
+	}
 	// 获取秘钥块的长度
 	blockSize := block.BlockSize()
 	// 补全码
@@ -73,17 +75,17 @@ func AesEncryptCBC(plan []byte) (string, error) {
 
 func AesDecryptCBC(cryted string) (b []byte, err error) {
 	if (JwtSecretLen == 16 || JwtSecretLen == 24 || JwtSecretLen == 32) == false {
-		return b, errors.New("JwtSecret lenght must 16/24/32.")
+		return nil, exception.ErrAuthSecret
 	}
 	// 转成字节数组
 	crytedByte, err := base64.StdEncoding.DecodeString(cryted)
 	if err != nil {
-		return
+		return nil, exception.ErrBase64Decode
 	}
 	// 分组秘钥
 	block, err := aes.NewCipher(JwtSecret)
 	if err != nil {
-		return
+		return nil, exception.ErrAuthSecret
 	}
 	// 获取秘钥块的长度
 	blockSize := block.BlockSize()

exception/auth.go

@@ -3,7 +3,7 @@ package exception
 // jwt custom error code ,begin:200
 var (
 	ErrAuthSecret       = Errorf(200, "Auth JwtSecret Error")
-	ErrAuthDecode       = Errorf(201, "Auth Token Base64 Decode Error")
+	ErrBase64Decode     = Errorf(201, "Auth Token Base64 Decode Error")
 	ErrAuthNotFound     = Errorf(202, "Auth Token Not Found")
 	ErrAuthParseFail    = Errorf(203, "Auth Parse Fail")
 	ErrAuthId           = Errorf(204, "Auth Id Not Passed")
@@ -11,5 +11,7 @@ var (
 	ErrAuthTokenChanged = Errorf(206, "Auth Token Changed")
 	ErrAuthIdType       = Errorf(207, "Auth Id Type Error")
 	ErrAuthExpire       = Errorf(208, "Auth Token Expire")
-	ErrAuthClient       = Errorf(208, "Auth Token Client Not Passed")
+	ErrAuthClient       = Errorf(209, "Auth Token Client Not Passed")
+	ErrJsonDecode       = Errorf(210, "Auth JSON Decode Error")
+	ErrJsonEncode       = Errorf(211, "Auth JSON Encode Error")
 )