Imports System.Security.Cryptography

Public Class EnDec

    Private TripleDes As New TripleDESCryptoServiceProvider
    Sub New(ByVal key As String)
        ' Initialize the crypto provider.
        TripleDes.Key = TruncateHash(key, TripleDes.KeySize \ 8)
        TripleDes.IV = TruncateHash("", TripleDes.BlockSize \ 8)
    End Sub

    Private Function TruncateHash(
        ByVal key As String,
        ByVal length As Integer) _
        As Byte()

        Dim sha1 As New SHA1CryptoServiceProvider

        ' Hash the key.
        Dim keyBytes() As Byte =
            System.Text.Encoding.Unicode.GetBytes(key)
        Dim hash() As Byte = sha1.ComputeHash(keyBytes)

        ' Truncate or pad the hash.
        ReDim Preserve hash(length - 1)
        Return hash
    End Function

    ''' <summary>
    ''' 문자열의 암호화
    ''' </summary>
    ''' <param name="plaintext"></param>
    ''' <returns></returns>
    ''' <remarks></remarks>
    Public Function EncryptData(
        ByVal plaintext As String) _
        As String

        ' Convert the plaintext string to a byte array.
        Dim plaintextBytes() As Byte =
            System.Text.Encoding.Unicode.GetBytes(plaintext)

        ' Create the stream.
        Dim ms As New System.IO.MemoryStream
        ' Create the encoder to write to the stream.
        Dim encStream As New CryptoStream(ms,
            TripleDes.CreateEncryptor(),
            System.Security.Cryptography.CryptoStreamMode.Write)

        ' Use the crypto stream to write the byte array to the stream.
        encStream.Write(plaintextBytes, 0, plaintextBytes.Length)
        encStream.FlushFinalBlock()

        ' Convert the encrypted stream to a printable string.
        Return Convert.ToBase64String(ms.ToArray)
    End Function

    ''' <summary>
    ''' 복호화'
    ''' </summary>
    ''' <param name="encryptedtext"></param>
    ''' <returns></returns>
    ''' <remarks></remarks>
    Public Function DecryptData(
    ByVal encryptedtext As String) _
    As String

        ' Convert the encrypted text string to a byte array.
        Dim encryptedBytes() As Byte = Convert.FromBase64String(encryptedtext)

        ' Create the stream.
        Dim ms As New System.IO.MemoryStream
        ' Create the decoder to write to the stream.
        Dim decStream As New CryptoStream(ms,
            TripleDes.CreateDecryptor(),
            System.Security.Cryptography.CryptoStreamMode.Write)

        ' Use the crypto stream to write the byte array to the stream.
        decStream.Write(encryptedBytes, 0, encryptedBytes.Length)
        decStream.FlushFinalBlock()

        ' Convert the plaintext stream to a string.
        Return System.Text.Encoding.Unicode.GetString(ms.ToArray, 0, ms.Length)
    End Function

    ''' <summary>
    ''' 파일로부터 문자열을 읽어옵니다.
    ''' </summary>
    ''' <param name="Filename"></param>
    ''' <remarks></remarks>
    Public Function Read_STring(ByVal Filename As String) As String
        Dim FI As New System.IO.FileInfo(Filename)
        If FI.Exists = False Then
            MsgBox("필수파일이 존재하지않습니다", MsgBoxStyle.Critical, "확인")
            Return ""
        End If

        Dim FS As New System.IO.FileStream(FI.FullName, IO.FileMode.Open)
        Dim SR As New System.IO.StreamReader(FS, System.Text.Encoding.Default)

        Dim cipherText As String = SR.ReadToEnd
        SR.Close()
        FS.Close()

        ' DecryptData throws if the wrong password is used.
        Try
            Dim plainText As String = DecryptData(cipherText)
            Return plainText
            'MsgBox("해독값은? " & plainText)
        Catch ex As System.Security.Cryptography.CryptographicException
            Return ""
            MsgBox("암호화키가 일치하지않거나 기타 오류입니다")
        End Try

    End Function

    ''' <summary>
    ''' 파일에 해당 문자열을 기록합니다.
    ''' </summary>
    ''' <param name="Filename"></param>
    ''' <param name="Contents"></param>
    ''' <remarks></remarks>
    Public Sub Write_String(ByVal Filename As String, ByVal Contents As String)
        Dim cipherText As String = EncryptData(Contents)

        Dim FI As New System.IO.FileInfo(Filename)
        Dim FS As New System.IO.FileStream(FI.FullName, IO.FileMode.Create)
        Dim SW As New System.IO.StreamWriter(FS, System.Text.Encoding.Default)
        'MsgBox("암호화된값은? " & cipherText)
        SW.Write(cipherText)
        SW.Flush()
        SW.Close()
        FS.Close()
    End Sub


End Class
Public Class MyAuth  '//각종인증방법을 이용한다.
    Public Function GetDateAuth(ByVal 만기일자 As Date) As Boolean  '//날짜인증시 사용가능한지
        '//사용가능한 날짜인지 확인하고 만약 날짜정보가 없으면은 날짜를 setdataeauth 를 실행합니다
        '//인터넷에 연결되어있을시 현재 시간정보를 인터넷에서 받아온ㄷ
        '//콘솔의 현재날짜가 설치된 날짜보다 더 뒤일경우 사용중지
        '//레지 파일의 기록날짜가 서로다를경우 사용중지
        '//레지,파일의 기록날짜가 동일하고 콘솔의 현재날짜가 기한을 넘지않았을경우에만 true 한다.
        Dim isAvailable As Boolean = My.Computer.Network.IsAvailable  '//인터넷사용여부
        Dim CurrentDate As Date

        If isAvailable Then '//인터넷에서 날짜정보를 가져온다 기록된 날짜와 오늘의 날짜를 확인한다.
            Dim Itime As Date
            Try
                CurrentDate = Itime
            Catch ex As Exception   '//에러발생시 콘솔날짜로 세팅한다.
                CurrentDate = Now
            End Try
        Else
            MsgBox("인터넷사용불가")
            CurrentDate = Now
        End If

        If 만기일자 > CurrentDate Then Return False
        Return True
    End Function

    Public Sub SetAuth(ByVal Newkey As Long, ByVal Fn As String)
        ' Dim auth As New ARINCLASS
        Dim Arinini As New MyINI2(Fn)
        Arinini.Write("main", "install2", Newkey)
        Arinini.Write("main", "installkey2", Newkey.GetHashCode)

        Dim key As Long = Newkey
        Dim key2 As Long = CType(Newkey.GetHashCode(), Long)

        My.Computer.Registry.SetValue("HKEY_CURRENT_USER\Software\FileManager", "install", key)
        My.Computer.Registry.SetValue("HKEY_CURRENT_USER\Software\FileManager", "installkey", key2)
     


        Dim A As New System.Text.StringBuilder
        A.AppendLine("인증정보가 파일에 기록되었습니다")
        A.AppendLine("만기일 : " & Date.FromFileTimeUtc(Newkey))
        MsgBox(A.ToString, MsgBoxStyle.Information, "기록완료")

    End Sub


    ''' <summary>
    ''' 미지원 함수
    ''' </summary>
    ''' <returns></returns>
    ''' <remarks></remarks>
    Public Function SetDateAuth() As Boolean  '//레지와 파일에 해당 인증정보를 기록합니다
        Return True
    End Function

    ''' <summary>
    ''' 미지원함수
    ''' </summary>
    ''' <returns></returns>
    ''' <remarks></remarks>
    Public Function GetCurrentDate() As Date  '//오늘날짜를 가져옵니다
        Return Now
    End Function

    Public Function GetDateNumber(ByVal 시작일 As Date) As Long
        Return 시작일.ToFileTimeUtc
    End Function

    Public Function GetDateNumberEnc(ByVal 시작일 As Date) As String
        Return 시작일.ToFileTimeUtc.ToString.GetHashCode  '//날짜로 들어가면 날짜의 해쉬코드를 넘겨준다.
    End Function

    Public Function GetDateNumberEnc(ByVal 시작일 As Long) As String
        Return 시작일.ToString.GetHashCode
    End Function

End Class

Public Class MyINI2
    Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Integer, ByVal lpFileName As String) As Integer
    Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpString As String, ByVal lpDownFileName As String) As Integer
    'Private Aname As String
    Public FileName As String = vbNullString
    Private FileNameBuf As String
    Private m_sPath As String
    Private m_sKey As String
    Private m_sSection As String
    Private m_sDefault As String
    Private m_lLastReturnCode As Integer

    Public Sub New(ByVal File As String)
        FileName = File
        FileNameBuf = File
        Me.Create()

        'MsgBox("New 1=" & FileName & vbCrLf & "2=" & FileNameBuf)

        ' If Not System.IO.File.Exists(File) Then System.IO.File.Create(File)
    End Sub
    Public Sub Create()
        If Exist() = True Then Return
        Dim A As New IO.FileInfo(FileName)
        A.Directory.Create()
        Dim FS As IO.FileStream = A.Create()
        Dim SW As New IO.StreamWriter(FS, System.Text.Encoding.Default)
        SW.WriteLine("//Myini 로부터 자동생성된 파일입니다")
        SW.WriteLine("//생성일자 : " & Now.ToString)
        SW.Flush()
        SW.Close()
        FS.Close()
        SW = Nothing
        FS = Nothing
        FileName = FileNameBuf
    End Sub
    Public Function Exist() As Boolean
        Return System.IO.File.Exists(FileName)
    End Function

    Public Function Read(ByVal appkey As String, ByVal subkey As String, Optional ByVal DefaultValue As String = vbNullString) As String '//변수초기화
        'MsgBox("Read 1=" & FileName & vbCrLf & "2=" & FileNameBuf)

        Dim tempstr As Integer 'ini파일에서 읽어온 값을 임시저장하는 변수
        Dim strtemp As String = New String(Chr(0), 2000) 'ini파일의 임시 변수
        Dim Tempbuf As String

        If Not Exist() Then
            MsgBox("환경파일이 존재하지 않습니다" & vbCrLf & "APP=" & appkey & vbCrLf & "subkey=" & subkey & vbCrLf & "파일명=" & FileName, MsgBoxStyle.Critical, "Error")
            Return vbNullString
        End If
        Try
            tempstr = GetPrivateProfileString(appkey, subkey, "", strtemp, Len(strtemp), FileName)
            Tempbuf = strtemp.Substring(0, tempstr)
            Tempbuf = Tempbuf.Trim(Chr(0))

            FileName = FileNameBuf

            If Tempbuf.Trim = vbNullString AndAlso DefaultValue <> vbNullString Then
                Return DefaultValue
            Else
                Return Tempbuf
            End If
        Catch ex As Exception
            FileName = FileNameBuf
            Return vbNullString
        End Try

    End Function
    Public Function ReadFile(ByVal appkey As String, ByVal subkey As String, ByVal filename2 As String, Optional ByVal DefaultValue As String = vbNullString) As String '//변수초기화
        'MsgBox("ReadFile 1=" & FileName & vbCrLf & "2=" & FileNameBuf)
        Dim tempstr As Integer 'ini파일에서 읽어온 값을 임시저장하는 변수
        Dim strtemp As String = New String(Chr(0), 2000) 'ini파일의 임시 변수
        Dim Tempbuf As String

        If Not System.IO.File.Exists(filename2) Then
            MsgBox("환경파일이 존재하지 않습니다" & vbCrLf & "파일명=" & FileName, MsgBoxStyle.Critical, "Error")
            Return vbNullString
        End If

        Try
            tempstr = GetPrivateProfileString(appkey, subkey, "", strtemp, Len(strtemp), filename2)
            Tempbuf = strtemp.Substring(0, tempstr)
            If Tempbuf.Trim = vbNullString AndAlso DefaultValue <> vbNullString Then
                Return DefaultValue
            Else
                Return Tempbuf
            End If
        Catch ex As Exception
            Return vbNullString
        End Try
        FileName = FileNameBuf
    End Function

    Public Function Write(ByVal appkey As String, ByVal subkey As String, ByVal WriteVal As Object) As Integer
        Dim RetVal As Integer
        'MsgBox("Write1 1=" & FileName & vbCrLf & "2=" & FileNameBuf)
        If Not Exist() Then
            MsgBox("환경파일이 존재하지 않습니다" & vbCrLf & "파일을 생성합니다." & vbCrLf & "파일명=" & FileName, MsgBoxStyle.Information, "확인")
            Me.Create()
        End If
        ' FileName = Aname
        RetVal = (WritePrivateProfileString(appkey, subkey, WriteVal, FileName))
        FileName = FileNameBuf
        Return RetVal

    End Function
    Public Sub Write(ByVal appkey As String, ByVal subkey As String, ByVal WriteVal As Object, ByVal fileName2 As String)
        'MsgBox("Write2 1=" & FileName & vbCrLf & "2=" & FileNameBuf)
        If Not System.IO.File.Exists(fileName2) Then
            MsgBox("[D] 환경파일이 존재하지 않습니다" & vbCrLf & "파일을 생성합니다." & vbCrLf & "파일명=" & fileName2, MsgBoxStyle.Information, "확인")
            System.IO.File.Create(fileName2)
        End If
        WritePrivateProfileString(appkey, subkey, WriteVal, fileName2)
        FileName = FileNameBuf
    End Sub



    Public Sub EnumerateCurrentSection(ByRef sKey() As String, ByRef iCount As Integer)
        Dim sSection As String
        Dim iPos As Integer
        Dim iNextPos As Integer
        Dim sCur As String

        iCount = 0
        Erase sKey
        sSection = INISection
        If (Len(sSection) > 0) Then
            iPos = 1
            iNextPos = InStr(iPos, sSection, Chr(0))
            Do While iNextPos <> 0
                sCur = Mid(sSection, iPos, iNextPos - iPos)
                If (sCur <> Chr(0)) Then
                    iCount = iCount + 1
                    'UPGRADE_WARNING: sKey 배열의 하한이 1에서 0(으)로 변경되었습니다. 자세한 내용은 다음을 참조하십시오. 'ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?keyword="0F1C9BE1-AF9D-476E-83B1-17D43BECFF20"'
                    ReDim Preserve sKey(iCount)
                    sKey(iCount) = Mid(sSection, iPos, iNextPos - iPos)
                    iPos = iNextPos + 1
                    iNextPos = InStr(iPos, sSection, Chr(0))
                End If
            Loop
        End If
    End Sub


    Public Sub GetAllsection(ByVal key As String, ByRef Section As ArrayList, ByRef Value As ArrayList)
        Dim FS As New System.IO.FileStream(FileName, FileMode.Open)
        Dim SR As New StreamReader(FS, System.Text.Encoding.Default)
        Dim Findkey As String = "[" & key & "]"
        Dim Line As String
        Dim KeyPos As Integer = -1
        Dim Seppos As Integer = -1
        While SR.Peek > -1
            Line = SR.ReadLine
            If KeyPos = -1 Then '//키를 못찻았으면 
                If Line.ToUpper.IndexOf(Findkey.ToUpper) > -1 Then KeyPos = Line.ToUpper.IndexOf(Findkey.ToUpper)
            Else    '//찾앗으면
                If Line.IndexOf("[") = -1 Then  '//그다음 키가 오기전까지 모두 추가한다.
                    Seppos = Line.IndexOf("=")
                    Section.Add(Line.Substring(0, Seppos))
                    Value.Add(Line.Substring(Seppos + 1))
                Else
                    Exit While
                End If
            End If
        End While

        SR.Close()
        FS.Close()


    End Sub

    Public Sub EnumerateAllSections(ByRef sSections() As String, ByRef iCount As Integer)
        Dim sIniFile As String
        Dim iPos As Integer
        Dim iNextPos As Integer
        Dim sCur As String

        iCount = 0
        Erase sSections
        sIniFile = Sections
        If (Len(sIniFile) > 0) Then
            iPos = 1
            iNextPos = InStr(iPos, sIniFile, Chr(0))
            Do While iNextPos <> 0
                If (iNextPos <> iPos) Then
                    sCur = Mid(sIniFile, iPos, iNextPos - iPos)
                    iCount = iCount + 1
                    'UPGRADE_WARNING: sSections 배열의 하한이 1에서 0(으)로 변경되었습니다. 자세한 내용은 다음을 참조하십시오. 'ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?keyword="0F1C9BE1-AF9D-476E-83B1-17D43BECFF20"'
                    ReDim Preserve sSections(iCount)
                    sSections(iCount) = sCur
                End If
                iPos = iNextPos + 1
                iNextPos = InStr(iPos, sIniFile, Chr(0))
            Loop
        End If

    End Sub

    Property INISection() As String
        Get
            Dim sBuf As String
            Dim iSize As String
            Dim iRetCode As Short

            sBuf = Space(8192)
            iSize = CStr(Len(sBuf))
            iRetCode = GetPrivateProfileString(m_sSection, 0, m_sDefault, sBuf, CInt(iSize), m_sPath)
            If (CDbl(iSize) > 0) Then
                INISection = Left(sBuf, iRetCode)
            Else
                INISection = ""
            End If

        End Get
        Set(ByVal Value As String)
            m_lLastReturnCode = WritePrivateProfileString(m_sSection, 0, Value, m_sPath)
        End Set
    End Property
    ReadOnly Property Sections() As String
        Get
            Dim sBuf As String
            Dim iSize As String
            Dim iRetCode As Short

            sBuf = Space(8192)
            iSize = CStr(Len(sBuf))
            iRetCode = GetPrivateProfileString(0, 0, m_sDefault, sBuf, CInt(iSize), m_sPath)
            If (CDbl(iSize) > 0) Then
                Sections = Left(sBuf, iRetCode)
            Else
                Sections = ""
            End If

        End Get
    End Property

    ReadOnly Property LastReturnCode() As Integer
        Get
            LastReturnCode = m_lLastReturnCode
        End Get
    End Property
    ReadOnly Property Success() As Boolean
        Get
            Success = (m_lLastReturnCode <> 0)
        End Get
    End Property
    'UPGRADE_NOTE: Default이(가) Default_Renamed(으)로 업그레이드되었습니다. 자세한 내용은 다음을 참조하십시오. 'ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?keyword="A9E4979A-37FA-4718-9994-97DD76ED70A7"'
    Property Default_Renamed() As String
        Get
            Default_Renamed = m_sDefault
        End Get
        Set(ByVal Value As String)
            m_sDefault = Value
        End Set
    End Property
    Property Path() As String
        Get
            Path = m_sPath
        End Get
        Set(ByVal Value As String)
            m_sPath = Value
        End Set
    End Property
    Property Key() As String
        Get
            Key = m_sKey
        End Get
        Set(ByVal Value As String)
            m_sKey = Value
        End Set
    End Property
    Property Section() As String
        Get
            Section = m_sSection
        End Get
        Set(ByVal Value As String)
            m_sSection = Value
        End Set
    End Property


End Class