module2.bas

pppoe创建和加密

Attribute VB_Name = "Module2"
Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Declare Function SendMessageLong Lib _
"user32" Alias "SendMessageA" (ByVal hwnd As Long, _
ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Declare Sub RtlMoveMemory Lib "kernel32" (lpvDest As Any, lpvSource As Any, ByVal cbCopy As Long)
Public Const EM_GETLINECOUNT = "&HBA"
Const EM_GETLINE = &HC4
Const EM_LINELENGTH = &HC1
Const EM_LINEINDEX = &HBB

Private Const BITS_TO_A_BYTE = 8
Private Const BYTES_TO_A_WORD = 4
Private Const BITS_TO_A_WORD = 32






Declare Function GetPrivateProfileString Lib "kernel32" _
   Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, _
   ByVal lpKeyName As Any, ByVal lpDefault As String, _
   ByVal lpReturnedString As String, ByVal nSize As Long, _
   ByVal lpFileName As String) As Long
Declare Function WritePrivateProfileString Lib "kernel32" _
   Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, _
   ByVal lpKeyName As Any, ByVal lpString As String, _
   ByVal lpFileName As String) As Long
Private m_lOnBits(30)
Private m_l2Power(30)
 Public Const MAX_HOSTNAME_LEN = 132
Public Const MAX_DOMAIN_NAME_LEN = 132
Public Const MAX_SCOPE_ID_LEN = 260
Public Const MAX_ADAPTER_NAME_LENGTH = 260
Public Const MAX_ADAPTER_ADDRESS_LENGTH = 8
Public Const MAX_ADAPTER_DESCRIPTION_LENGTH = 132
Public Const ERROR_BUFFER_OVERFLOW = 111
Public Const MIB_IF_TYPE_ETHERNET = 6
Public Const MIB_IF_TYPE_TOKENRING = 9
Public Const MIB_IF_TYPE_FDDI = 15
Public Const MIB_IF_TYPE_PPP = 23
Public Const MIB_IF_TYPE_LOOPBACK = 24
Public Const MIB_IF_TYPE_SLIP = 28

Type IP_ADDR_STRING
            Next As Long
            IpAddress As String * 16
            IpMask As String * 16
            Context As Long
End Type

Type IP_ADAPTER_INFO
            Next As Long
            ComboIndex As Long
            AdapterName As String * MAX_ADAPTER_NAME_LENGTH
            Description As String * MAX_ADAPTER_DESCRIPTION_LENGTH
            AddressLength As Long
            Address(MAX_ADAPTER_ADDRESS_LENGTH - 1) As Byte
            Index As Long
            Type As Long
            DhcpEnabled As Long
            CurrentIpAddress As Long
            IpAddressList As IP_ADDR_STRING
            GatewayList As IP_ADDR_STRING
            DhcpServer As IP_ADDR_STRING
            HaveWins As Byte
            PrimaryWinsServer As IP_ADDR_STRING
            SecondaryWinsServer As IP_ADDR_STRING
            LeaseObtained As Long
            LeaseExpires As Long
End Type

Type FIXED_INFO
            HostName As String * MAX_HOSTNAME_LEN
            DomainName As String * MAX_DOMAIN_NAME_LEN
            CurrentDnsServer As Long
            DnsServerList As IP_ADDR_STRING
            NodeType As Long
            ScopeId  As String * MAX_SCOPE_ID_LEN
            EnableRouting As Long
            EnableProxy As Long
            EnableDns As Long
End Type

Public Declare Function GetNetworkParams Lib "IPHlpApi.dll" _
       (FixedInfo As Any, pOutBufLen As Long) As Long
Public Declare Function GetAdaptersInfo Lib "IPHlpApi.dll" _
       (IpAdapterInfo As Any, pOutBufLen As Long) As Long
Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
       (Destination As Any, Source As Any, ByVal Length As Long)




Private Function LShift(lValue, iShiftBits)
    If iShiftBits = 0 Then
        LShift = lValue
        Exit Function
    ElseIf iShiftBits = 31 Then
        If lValue And 1 Then
            LShift = &H80000000
        Else
            LShift = 0
        End If
        Exit Function
    ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
        Err.Raise 6
    End If

    If (lValue And m_l2Power(31 - iShiftBits)) Then
        LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or &H80000000
    Else
        LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))
    End If
End Function

Private Function RShift(lValue, iShiftBits)
    If iShiftBits = 0 Then
        RShift = lValue
        Exit Function
    ElseIf iShiftBits = 31 Then
        If lValue And &H80000000 Then
            RShift = 1
        Else
            RShift = 0
        End If
        Exit Function
    ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
        Err.Raise 6
    End If
    
    RShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)

    If (lValue And &H80000000) Then
        RShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1)))
    End If
End Function

Private Function RotateLeft(lValue, iShiftBits)
    RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))
End Function

Private Function AddUnsigned(lX, lY)
    Dim lX4
    Dim lY4
    Dim lX8
    Dim lY8
    Dim lResult
 
    lX8 = lX And &H80000000
    lY8 = lY And &H80000000
    lX4 = lX And &H40000000
    lY4 = lY And &H40000000
 
    lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)
 
    If lX4 And lY4 Then
        lResult = lResult Xor &H80000000 Xor lX8 Xor lY8
    ElseIf lX4 Or lY4 Then
        If lResult And &H40000000 Then
            lResult = lResult Xor &HC0000000 Xor lX8 Xor lY8
        Else
            lResult = lResult Xor &H40000000 Xor lX8 Xor lY8
        End If
    Else
        lResult = lResult Xor lX8 Xor lY8
    End If
 
    AddUnsigned = lResult
End Function

Private Function md5_F(x, y, z)
    md5_F = (x And y) Or ((Not x) And z)
End Function

Private Function md5_G(x, y, z)
    md5_G = (x And z) Or (y And (Not z))
End Function

Private Function md5_H(x, y, z)
    md5_H = (x Xor y Xor z)
End Function

Private Function md5_I(x, y, z)
    md5_I = (y Xor (x Or (Not z)))
End Function

Private Sub md5_FF(a, b, c, d, x, s, ac)
    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac))
    a = RotateLeft(a, s)
    a = AddUnsigned(a, b)
End Sub

Private Sub md5_GG(a, b, c, d, x, s, ac)
    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac))
    a = RotateLeft(a, s)
    a = AddUnsigned(a, b)
End Sub

Private Sub md5_HH(a, b, c, d, x, s, ac)
    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac))
    a = RotateLeft(a, s)
    a = AddUnsigned(a, b)
End Sub

Private Sub md5_II(a, b, c, d, x, s, ac)
    a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac))
    a = RotateLeft(a, s)
    a = AddUnsigned(a, b)
End Sub

Private Function ConvertToWordArray(sMessage)
    Dim lMessageLength
    Dim lNumberOfWords
    Dim lWordArray()
    Dim lBytePosition
    Dim lByteCount
    Dim lWordCount
    
    Const MODULUS_BITS = 512
    Const CONGRUENT_BITS = 448
    
    lMessageLength = Len(sMessage)
    
    lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) \ BITS_TO_A_BYTE)) \ (MODULUS_BITS \ BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS \ BITS_TO_A_WORD)
    ReDim lWordArray(lNumberOfWords - 1)
    
    lBytePosition = 0
    lByteCount = 0
    Do Until lByteCount >= lMessageLength
        lWordCount = lByteCount \ BYTES_TO_A_WORD
        lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE