jwt check if token expired

Question

I ve configured the token like this   jwt sign          user  pick user     id    username           secret          expiresIn   2m           But when I want to check if the token was expired  this code doesn t work  function isAuthenticated       const token   localStorage getItem  token      const refreshToken   localStorage getItem  refreshToken      try       decode token       const   exp     decode refreshToken       if  exp  lt   new Date   getTime     1    1000          return false            catch  err        return false        return true      The problem is this part   if  exp  lt   new Date   getTime     1    1000      return false      new Date   getTime     1    1000   1531335468 113  exp   1531334595  Because I don t know what format of time uses JWT     How can I resolve this   Thank you

User · Answer

You should use jwt verify it will check if the token is expired   jwt decode should not be used if the source is not trusted as it doesn t check if the token is valid

User · Answer

This is the answer if someone want to know  if  Date now    gt   exp   1000      return false

User · Answer

Sadly  Andr  s Montoya answer has a flaw which is related to how he compares the obj  I found a solution here which should solve this   const now   Date now   valueOf     1000  if  typeof decoded exp      undefined   amp  amp  decoded exp  lt  now        throw new Error  token expired    JSON stringify decoded       if  typeof decoded nbf      undefined   amp  amp  decoded nbf  gt  now        throw new Error  token expired    JSON stringify decoded         Thanks to thejohnfreeman

User · Answer

verify itself returns an error if expired  Safer as  Gabriel said  const jwt   require  jsonwebtoken    router use  req  res  next    gt      const token   yourJwtService getToken req     Get your token from the request   jwt verify token  req app get  your-secret    function err  decoded        if  err  throw new Error err     Manage different errors here  Expired  untrusted         req auth   decoded    If no error  token info is returned in  decoded      next             And same written in async await syntax  const jwt   require  jsonwebtoken   const jwtVerifyAsync   util promisify jwt verify    router use async  req  res  next    gt      const token   yourJwtService getToken req     Get your token from the request   try       req auth   await jwtVerifyAsync token  req app get  your-secret       If no error  token info is returned     catch  err        throw new Error err     Manage different errors here  Expired  untrusted           next

User · Answer

This is for react-native  but login will work for all types   isTokenExpired   async      gt        try           const LoginTokenValue   await AsyncStorage getItem  LoginTokenValue            if  JSON parse LoginTokenValue  RememberMe                const   exp     JwtDecode LoginTokenValue               if  exp  lt   new Date   getTime     1    1000                    this handleSetTimeout                    return false                else                     Navigate inside the application                 return true                          else                 Navigate to the login page                 catch  err            console log  Spalsh - gt  isTokenExpired - gt  err   err             Navigate to the login page         return false

User · Answer

Pass in function expiration date to check token  function checkToken exp        if  Date now    lt   exp   1000          console log true   token is not expired         else          console log false   token is expired

[node.js] jwt check if token expired

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