Question

我制作了2个程序客户端和服务器并输入安全号码如果用户忘记密码通过输入安全号码恢复它正常工作但是如果MD5的哈希密码无法通过安全号码恢复密码我输入以下是关于它

 ' query database, check if username and password are correct
    Dim mysqlDB As New mysql
    Dim userDB As String = mysqlDB.prepareQuery(arr(0).ToString)
    Dim passDB As String = mysqlDB.prepareQuery(arr(1).ToString)
    Dim query As String = "select * from users where userName='" + userDB + "' and password = '" + passDB + "'"
    mysqlDB.QueryDB(query)
    Dim found As Boolean = False

    ' read results
    While mysqlDB.reader.Read()
        username = mysqlDB.reader.GetString(1)
        password = mysqlDB.reader.GetString(2)
        clientPublicKey = mysqlDB.reader.GetString(3)
        found = True
    End While
    mysqlDB.CloseDB()

    If found = False Then   ' if not found check SecID

        query = "select password from users where userName='" + userDB + "' and SecID = '" + passDB + "'"
        mysqlDB.QueryDB(query)
        found = False
        ' read results
        While mysqlDB.reader.Read()
            password = "Your Password: " & mysqlDB.reader.GetString(0)
            Sbytes = Encoding.ASCII.GetBytes(password)
            found = True
        End While
        mysqlDB.CloseDB()
        If found = False Then   ' if not found send error message
            Sbytes = Encoding.ASCII.GetBytes("Wrong username or password")
        End If

        stream.Write(Sbytes, 0, Sbytes.Length)
        stream.Close()
        tcpClient.Close()
        Exit Sub

    End If
    ' close DB connection
    mysqlDB.CloseDB()

Answer 1

如果您问是否可以将MD5哈希恢复为原始密码，答案是：“不，您不能这样做。”

如果通过MD5

1 个答案: