Как конвертировать vb.net к vb6

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Я написал код на C# и vb.net но теперь требование заключается в VB6.Могу ли я конвертировать vb.net код для vb6.Как добавить пространство имен в систему vb6.Безопасность.Криптография

Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.Security.Cryptography
Imports System.IO

Namespace RijndaelEncDec

    Public Enum CryptoEventType

        Message

        FileProgress

    End Enum

    Public Class CryptoEventArgs
        Inherits EventArgs

        Private m_type As CryptoEventType

        Private m_message As String

        Private m_fileLength As Integer

        Private m_filePosition As Integer

        Public Sub New(ByVal message As String)

            m_type = CryptoEventType.Message


            Me.m_message = message
        End Sub

        Public Sub New(ByVal fileName As String, ByVal fileLength As Integer, ByVal filePosition As Integer)

            m_type = CryptoEventType.FileProgress

            Me.m_fileLength = fileLength

            Me.m_filePosition = filePosition


            m_message = fileName
        End Sub

        Public ReadOnly Property Type() As CryptoEventType

            Get
                Return m_type
            End Get
        End Property


        Public ReadOnly Property Message() As String

            Get
                Return m_message
            End Get
        End Property


        Public ReadOnly Property FileName() As String

            Get
                Return m_message
            End Get
        End Property


        Public ReadOnly Property FileLength() As Integer

            Get
                Return m_fileLength
            End Get
        End Property


        Public ReadOnly Property FilePosition() As Integer

            Get
                Return m_filePosition
            End Get
        End Property


    End Class

    Public Delegate Sub cryptoEventHandler(ByVal sender As Object, ByVal e As CryptoEventArgs)

    ''' <summary>

    ''' 

    ''' </summary>

    Public Class CryptoManager

        Private testHeader As Byte() = Nothing
        'used to verify if decryption succeeded 
        Private testHeaderString As String = Nothing

        Public Sub New()

            testHeader = System.Text.Encoding.ASCII.GetBytes("testing header")


            testHeaderString = BitConverter.ToString(testHeader)
        End Sub
        Public Sub getKeysFromPassword(ByVal pass As String, ByRef rijnKey As Byte(), ByRef rijnIV As Byte())

            Dim salt As Byte() = System.Text.Encoding.ASCII.GetBytes("System.Text.Encoding.ASCII.GetBytes")

            Dim pb As New PasswordDeriveBytes(pass, salt)

            rijnKey = pb.GetBytes(32)

            rijnIV = pb.GetBytes(16)

        End Sub

        Const bufLen As Integer = 4096

        Public Sub EncryptData(ByVal inName As [String], ByVal outName As [String], ByVal rijnKey As Byte(), ByVal rijnIV As Byte())

            Dim fin As FileStream = Nothing

            Dim fout As FileStream = Nothing

            Dim encStream As CryptoStream = Nothing

            Try

                'Create the file streams to handle the input and output files.

                fin = New FileStream(inName, FileMode.Open, FileAccess.Read)

                fout = New FileStream(outName, FileMode.Create, FileAccess.Write)

                'Create variables to help with read and write.

                Dim bin As Byte() = New Byte(bufLen - 1) {}
                'This is intermediate storage for the encryption.
                Dim rdlen As Long = 0
                'This is the total number of bytes written.
                Dim totlen As Long = fin.Length
                'This is the total length of the input file.
                Dim len As Integer
                'This is the number of bytes to be written at a time.
                Dim rijn As New RijndaelManaged()

                rijn.Mode = CipherMode.CBC
                rijn.KeySize = 256
                rijn.BlockSize = 128
                rijn.Padding = PaddingMode.PKCS7

                encStream = New CryptoStream(fout, rijn.CreateEncryptor(rijnKey, rijnIV), CryptoStreamMode.Write)

                'zakoduj testowy fragment

                encStream.Write(testHeader, 0, testHeader.Length)

                'Read from the input file, then encrypt and write to the output file.

                While True

                    len = fin.Read(bin, 0, bufLen)

                    If len = 0 Then

                        Exit While
                    End If

                    encStream.Write(bin, 0, len)



                    rdlen += len


                End While
            Finally


                If encStream IsNot Nothing Then

                    encStream.Close()
                End If

                If fout IsNot Nothing Then

                    fout.Close()
                End If

                If fin IsNot Nothing Then

                    fin.Close()

                End If
            End Try

        End Sub

        Public Sub EncryptBuffer(ByVal buffer As [String], ByVal outName As [String], ByVal rijnKey As Byte(), ByVal rijnIV As Byte())

            Dim fin As FileStream = Nothing

            Dim fout As FileStream = Nothing

            Dim encStream As CryptoStream = Nothing

            Try

                'Create the file streams to handle the input and output files.

                '   fin = new FileStream((inName, FileMode.Open, FileAccess.Read);
                Dim byteArray As Byte() = Encoding.ASCII.GetBytes(buffer)

                Dim mem As New MemoryStream(byteArray)

                fout = New FileStream(outName, FileMode.Create, FileAccess.Write)

                'Create variables to help with read and write.

                Dim bin As Byte() = New Byte(bufLen - 1) {}
                'This is intermediate storage for the encryption.
                Dim rdlen As Long = 0
                'This is the total number of bytes written.
                Dim totlen As Long = mem.Length
                'This is the total length of the input file.
                Dim len As Integer
                'This is the number of bytes to be written at a time.
                Dim rijn As New RijndaelManaged()

                rijn.Mode = CipherMode.CBC
                rijn.KeySize = 256
                rijn.BlockSize = 128
                rijn.Padding = PaddingMode.PKCS7

                encStream = New CryptoStream(fout, rijn.CreateEncryptor(rijnKey, rijnIV), CryptoStreamMode.Write)

                'zakoduj testowy fragment

                encStream.Write(testHeader, 0, testHeader.Length)

                'Read from the input file, then encrypt and write to the output file.

                While True

                    len = mem.Read(bin, 0, bufLen)

                    If len = 0 Then

                        Exit While
                    End If

                    encStream.Write(bin, 0, len)



                    rdlen += len


                End While
            Finally


                If encStream IsNot Nothing Then

                    encStream.Close()
                End If

                If fout IsNot Nothing Then

                    fout.Close()
                End If

                If fin IsNot Nothing Then

                    fin.Close()

                End If
            End Try

        End Sub

        Public Function DecryptData(ByVal inName As [String], ByVal outName As [String], ByVal rijnKey As Byte(), ByVal rijnIV As Byte()) As Boolean

            'Create the file streams to handle the input and output files.

            Dim fin As FileStream = Nothing

            Dim fout As FileStream = Nothing

            Dim decStream As CryptoStream = Nothing

            Try

                fin = New FileStream(inName, FileMode.Open, FileAccess.Read)

                'Create variables to help with read and write.

                Dim bin As Byte() = New Byte(bufLen - 1) {}
                'This is intermediate storage for the encryption.
                Dim rdlen As Long = 0
                'This is the total number of bytes written.
                Dim totlen As Long = fin.Length
                'This is the total length of the input file.
                Dim len As Integer
                'This is the number of bytes to be written at a time.
                Dim rijn As New RijndaelManaged()

                rijn.Mode = CipherMode.CBC
                rijn.KeySize = 256
                rijn.BlockSize = 128
                rijn.Padding = PaddingMode.PKCS7
                'DES ds = new DESCryptoServiceProvider();

                decStream = New CryptoStream(fin, rijn.CreateDecryptor(rijnKey, rijnIV), CryptoStreamMode.Read)


                'odkoduj testowy fragment

                Dim test As Byte() = New Byte(testHeader.Length - 1) {}

                decStream.Read(test, 0, testHeader.Length)

                If BitConverter.ToString(test) <> testHeaderString Then

                    decStream.Clear()

                    decStream = Nothing


                    Return False
                End If

                'create output file

                fout = New FileStream(outName, FileMode.Create, FileAccess.Write)

                'Read from the encrypted file and write dercypted data

                While True

                    len = decStream.Read(bin, 0, bufLen)

                    If len = 0 Then

                        Exit While
                    End If

                    fout.Write(bin, 0, len)



                    rdlen += len
                End While



                Return True
            Finally


                If decStream IsNot Nothing Then

                    decStream.Close()
                End If

                If fout IsNot Nothing Then

                    fout.Close()
                End If

                If fin IsNot Nothing Then

                    fin.Close()

                End If
            End Try

        End Function

    End Class

    
    Public Class Log
        Public Shared logPermission As Boolean = True
        Public Shared logFileLocation As [String] = "D:\C#EncDecLogFile.txt"

    End Class

    Public Class Rijndael
        Private pwd As String = ""

        Private testHeader As Byte() = Nothing
        'used to verify if decryption succeeded 
        Private testHeaderString As String = Nothing

        Private cryptoKey As Byte(), cryptoIV As Byte()

        Private crm As New CryptoManager()
        
        Public Sub getPassword()
            Try
                pwd = "1234567890"
                'get keys from password
                Dim dk As Byte() = Nothing
                Dim div As Byte() = Nothing
                crm.getKeysFromPassword(pwd, dk, div)
                cryptoKey = dk
                cryptoIV = div
            Catch ex As FormatException

                Return
            End Try
        End Sub
        Public Sub Encryption(ByVal filePath As String)
            'sunil code with RSA
            getPassword()
            Const PROVIDER_RSA_FULL As Integer = 1
            Const CONTAINER_NAME As String = "KeyContainer"
            Dim cspParams As CspParameters
            cspParams = New CspParameters(PROVIDER_RSA_FULL)
            cspParams.KeyContainerName = CONTAINER_NAME
            cspParams.Flags = CspProviderFlags.UseMachineKeyStore
            cspParams.ProviderName = "Microsoft Strong Cryptographic Provider"



            Dim originalPath As String = filePath.Substring(0, filePath.LastIndexOf("\"))
            Try
                Dim current As DateTime = DateTime.Now
                Dim RSA As New RSACryptoServiceProvider(cspParams)
                Dim keyToEncrypt As Byte()
                Dim encryptedKey As Byte()
                Dim origName As String = filePath
                Dim encName As String = origName & ".enc"
                Try
                    crm.EncryptData(origName, encName, cryptoKey, cryptoIV)
                    Dim fi As New FileInfo(origName)
                    Dim fi2 As New FileInfo(encName)
                    'remove readonly attribute
                    If (fi.Attributes And FileAttributes.[ReadOnly]) = FileAttributes.[ReadOnly] Then
                        fi.Attributes = fi.Attributes And Not FileAttributes.[ReadOnly]
                    End If
                    'copy creation and modification time
                    fi2.CreationTime = fi.CreationTime
                    fi2.LastWriteTime = fi.LastWriteTime
                    fi2.Attributes = FileAttributes.Normal Or FileAttributes.Archive
                    Dim data As Byte() = File.ReadAllBytes(encName)
                    'delete original file
                    File.Delete(encName)

                    '#Region "write RSA (Public Private) key in xml files"

                    Dim publicprivatexml As String = RSA.ToXmlString(True)
                    
                    '#End Region

                    keyToEncrypt = System.Text.ASCIIEncoding.Unicode.GetBytes(pwd)
                    encryptedKey = RSA.Encrypt(keyToEncrypt, False)
                    'using (BinaryWriter bw = new BinaryWriter(File.Create(origName + " " + current.Date.Day.ToString() + current.Date.Month.ToString() + current.Date.Year.ToString() + current.TimeOfDay.Duration().Hours.ToString() + current.TimeOfDay.Duration().Minutes.ToString() + current.TimeOfDay.Duration().Seconds.ToString() + ".enc")))
                    Using bw As New BinaryWriter(File.Create(originalPath & "\Encrypted.enc"))
                        'Write data
                        bw.Seek(0, SeekOrigin.Begin)
                        bw.Write(data)
                        bw.Write(encryptedKey)
                        bw.Close()
                        'MessageBox.Show("File Encrypted");
                    End Using
                    ' MessageBox.Show(ex.Message);
                Catch ex As CryptographicException
                    'MessageBox.Show(ex.Message);
                Catch ex As IOException
                    'i.e. readonly
                    ' MessageBox.Show(ex.Message);
                Catch ex As UnauthorizedAccessException
                End Try
                'MessageBox.Show(ex.Message);
            Catch ex As Exception
            End Try
        End Sub
        Public Sub Decryption(ByVal filePath As String)
            'sunil code with RSA
            Const PROVIDER_RSA_FULL As Integer = 1
            Const CONTAINER_NAME As String = "KeyContainer"
            Dim cspParams As CspParameters
            cspParams = New CspParameters(PROVIDER_RSA_FULL)
            cspParams.KeyContainerName = CONTAINER_NAME
            cspParams.Flags = CspProviderFlags.UseMachineKeyStore
            cspParams.ProviderName = "Microsoft Strong Cryptographic Provider"

            Dim originalPath As String = filePath.Substring(0, filePath.LastIndexOf("\"))
            Try
                Dim current As DateTime = DateTime.Now
                Dim encName As String = filePath & "data" & ".enc"
                Dim RSA As New RSACryptoServiceProvider(cspParams)

                '#Region "Seperate key and data"
                Dim alldata As Byte() = File.ReadAllBytes(filePath)
                Dim getencryptedkey As Byte() = New Byte(127) {}
                Dim data As Byte() = New Byte(alldata.Length - 129) {}
                For k As Integer = 0 To alldata.Length - 129
                    data(k) = alldata(k)
                Next
                Dim i As Integer = alldata.Length - 128, j As Integer = 0
                While i < alldata.Length
                    getencryptedkey(j) = alldata(i)
                    i += 1
                    j += 1
                End While
                Using bw As New BinaryWriter(File.Create(encName))
                    bw.Write(data)
                    bw.Close()
                End Using
               
                Dim publicprivatekeyxml As String = "<rsakeyvalue><modulus>qwJYZm7ECFuktmofbVkm4J1kRf/L9521P70DaJhw/JNCwmCVItuaGEZWUlPZoMB6Q05Da7yYhkhVTHbybyxTcSMeQBsXb8jVqm3HWN3Quy8XITjGkuCsP8AijmXVV2RWa8T1oklN5SZfdaprue0ZWLjUFcZff5eay4igWjXpmVE=</modulus><exponent>AQAB</exponent><p>6RxsBsub9tG0hwRS92vLjxUuBF5adjifmLvB3cr1RnwcgX7EoVWiw/UPBzfiF/B9ZYkvu5EnL3ZTZ0Uae0eDrw==</p><q>u8zniy7nrMDyZHgnMR1yaL/w/bw0jPelo9t3h/1yOetFBRDYKGQQc3njLl/I8NIm0grug+x43vSOprh65m7y/w==</q><dp>ooqX5JEaehq1FyPzuePm9yjcgl1MFHzdA8F/p2g6aGBn+/9pmdk9egeo5+6WbvzYYvEqYE4RFa4a77omgelWrw==</dp><dq>lcTGjzgb6KiDZl5wGvo56JHSNfhnDFjfTzrSK7CS7N/UzkJtsGCEwiLda3lV/cAK142CQ9FNX7k3HnyW/rhSrw==</dq><inverseq>qni6yLGiI0ZsSabZutS+OI+qF8paE4+CMBQxj6BOt/35msm+L8kc+sqgsghy/MoZDnlt9e/lIwc2YBOAZusMCg==</inverseq><d>HTAvSnyJdSu/N2txpcZbvmbe4JvCgqcmcpSealHqpxGziV3W1rZI3O/UeATb1nZD6A0JsO/l0LWz6XM7+gHE0/jkq6LTjvLlN0ob4VtrslGmMJ6ISbiaGq4tL/rsOl3bRRJVc4bNEqDH6IgeUdRjgDe3ZVZeYzsVNHK8KYBWogk=</d></rsakeyvalue>"
                RSA.FromXmlString(publicprivatekeyxml)

                Dim decryptedKey As Byte() = RSA.Decrypt(getencryptedkey, False)
                pwd = System.Text.ASCIIEncoding.Unicode.GetString(decryptedKey)
                Dim dk As Byte() = Nothing
                Dim div As Byte() = Nothing
                crm.getKeysFromPassword(pwd, dk, div)
                cryptoKey = dk
                cryptoIV = div
                '#End Region

                Dim ext As String = Path.GetExtension(encName).ToLower()
                If ext <> ".enc" Then
                    ' MessageBox.Show("Please Enter correct File");
                    Return
                End If
                Dim dncName As String = Path.GetDirectoryName(encName) & "\" & Path.GetFileNameWithoutExtension(encName)
                dncName = originalPath & "\Decrypted.dnc"
                Try
                    If crm.DecryptData(encName, dncName, cryptoKey, cryptoIV) Then
                        Dim fi As New FileInfo(encName)
                        Dim fi2 As New FileInfo(dncName)
                        If (fi.Attributes And FileAttributes.[ReadOnly]) = FileAttributes.[ReadOnly] Then
                            fi.Attributes = fi.Attributes And Not FileAttributes.[ReadOnly]
                        End If
                        'copy creation and modification time
                        fi2.CreationTime = fi.CreationTime
                        fi2.LastWriteTime = fi.LastWriteTime
                        'delete encrypted file
                        ' MessageBox.Show("File Decrypted");
                        File.Delete(encName)
                        ' MessageBox.Show("The file can't be decrypted - probably wrong password");
                    Else
                    End If

                    'MessageBox.Show(ex.Message);
                Catch ex As CryptographicException
                    ' MessageBox.Show(ex.Message);
                Catch ex As IOException
                    'i.e. readonly
                    ' MessageBox.Show(ex.Message);
                Catch ex As UnauthorizedAccessException
                End Try
                'MessageBox.Show(ex.Message);
            Catch ex As Exception
            End Try
        End Sub

        Public Function ReadEncryptFileToBuffer(ByVal fileSource As String) As String
            Const PROVIDER_RSA_FULL As Integer = 1
            Const CONTAINER_NAME As String = "KeyContainer"
            Dim cspParams As CspParameters
            cspParams = New CspParameters(PROVIDER_RSA_FULL)
            cspParams.KeyContainerName = CONTAINER_NAME
            cspParams.Flags = CspProviderFlags.UseMachineKeyStore
            cspParams.ProviderName = "Microsoft Strong Cryptographic Provider"

            Dim buffer As String = ""

            testHeader = System.Text.Encoding.ASCII.GetBytes("testing header")
            testHeaderString = BitConverter.ToString(testHeader)
            Dim originalPath As String = fileSource.Substring(0, fileSource.LastIndexOf("\"))

            Dim alldata As Byte() = File.ReadAllBytes(fileSource)
            Dim getencryptedkey As Byte() = New Byte(127) {}
            Dim data As Byte() = New Byte(alldata.Length - 129) {}
            Try
                Dim current As DateTime = DateTime.Now
                Dim encName As String = fileSource & "data" & ".enc"
                Dim RSA As New RSACryptoServiceProvider(cspParams)

                For k As Integer = 0 To alldata.Length - 129
                    data(k) = alldata(k)
                Next
                Dim i As Integer = alldata.Length - 128, j As Integer = 0
                While i < alldata.Length
                    getencryptedkey(j) = alldata(i)
                    i += 1
                    j += 1
                End While
                Using bw As New BinaryWriter(File.Create(encName))
                    bw.Write(data)
                    bw.Close()
                End Using
              
                Dim publicprivatekeyxml As String = "<rsakeyvalue><modulus>qwJYZm7ECFuktmofbVkm4J1kRf/L9521P70DaJhw/JNCwmCVItuaGEZWUlPZoMB6Q05Da7yYhkhVTHbybyxTcSMeQBsXb8jVqm3HWN3Quy8XITjGkuCsP8AijmXVV2RWa8T1oklN5SZfdaprue0ZWLjUFcZff5eay4igWjXpmVE=</modulus><exponent>AQAB</exponent><p>6RxsBsub9tG0hwRS92vLjxUuBF5adjifmLvB3cr1RnwcgX7EoVWiw/UPBzfiF/B9ZYkvu5EnL3ZTZ0Uae0eDrw==</p><q>u8zniy7nrMDyZHgnMR1yaL/w/bw0jPelo9t3h/1yOetFBRDYKGQQc3njLl/I8NIm0grug+x43vSOprh65m7y/w==</q><dp>ooqX5JEaehq1FyPzuePm9yjcgl1MFHzdA8F/p2g6aGBn+/9pmdk9egeo5+6WbvzYYvEqYE4RFa4a77omgelWrw==</dp><dq>lcTGjzgb6KiDZl5wGvo56JHSNfhnDFjfTzrSK7CS7N/UzkJtsGCEwiLda3lV/cAK142CQ9FNX7k3HnyW/rhSrw==</dq><inverseq>qni6yLGiI0ZsSabZutS+OI+qF8paE4+CMBQxj6BOt/35msm+L8kc+sqgsghy/MoZDnlt9e/lIwc2YBOAZusMCg==</inverseq><d>HTAvSnyJdSu/N2txpcZbvmbe4JvCgqcmcpSealHqpxGziV3W1rZI3O/UeATb1nZD6A0JsO/l0LWz6XM7+gHE0/jkq6LTjvLlN0ob4VtrslGmMJ6ISbiaGq4tL/rsOl3bRRJVc4bNEqDH6IgeUdRjgDe3ZVZeYzsVNHK8KYBWogk=</d></rsakeyvalue>"
                RSA.FromXmlString(publicprivatekeyxml)

                Dim decryptedKey As Byte() = RSA.Decrypt(getencryptedkey, False)
                pwd = System.Text.ASCIIEncoding.Unicode.GetString(decryptedKey)
                Dim dk As Byte() = Nothing
                Dim div As Byte() = Nothing
                crm.getKeysFromPassword(pwd, dk, div)
                cryptoKey = dk
                cryptoIV = div
              
                File.Delete(encName)
                Dim ext As String = Path.GetExtension(encName).ToLower()
                If ext <> ".enc" Then
                    ' MessageBox.Show("Please Enter correct File");
                    Return ""
                End If
            Catch
            End Try
           
            Dim RijndaelCipher As RijndaelManaged
            Dim cryptoStream As CryptoStream = Nothing
            Dim memoryStream As MemoryStream = Nothing
            Dim fsIn As FileStream = Nothing
            Dim reader As StreamReader = Nothing, cryptoStreamReader As StreamReader = Nothing
            Dim decryptText As [String] = Nothing


            Try

                RijndaelCipher = New RijndaelManaged()
                RijndaelCipher.Mode = CipherMode.CBC
                RijndaelCipher.KeySize = 256
                RijndaelCipher.BlockSize = 128
                RijndaelCipher.Padding = PaddingMode.PKCS7

                fsIn = New FileStream(fileSource, FileMode.Open, FileAccess.Read)
                reader = New StreamReader(fsIn, Encoding.[Default])
                Dim cipherText As [String] = reader.ReadToEnd()
                Dim cipherByte As Byte() = System.Text.Encoding.[Default].GetBytes(cipherText)

                Dim decryptor As ICryptoTransform = RijndaelCipher.CreateDecryptor(cryptoKey, cryptoIV)

                memoryStream = New MemoryStream(data)
                cryptoStream = New CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read)
                cryptoStreamReader = New StreamReader(cryptoStream)
                decryptText = cryptoStreamReader.ReadToEnd()
                buffer = decryptText.Substring(14)

                Return buffer
            Catch ex As FileNotFoundException
                If ex.FileName.CompareTo(fileSource) = 0 AndAlso Log.logPermission = True Then

                    Dim writer As New StreamWriter(Log.logFileLocation)
                    writer.WriteLine(ex.Message & " i.e. Input file for decryption Buffer")

                    writer.Close()


                End If
            Catch ex As Exception
                If Log.logPermission = True Then
                    Dim writer As New StreamWriter(Log.logFileLocation)
                    writer.WriteLine(ex.Message & "i.e. During Reading Encrypted File to Decrypted Buffer")
                    writer.Close()

                End If
            Finally
                If reader IsNot Nothing Then
                    reader.Close()
                End If
                If cryptoStreamReader IsNot Nothing Then
                    cryptoStreamReader.Close()
                End If
                If cryptoStream IsNot Nothing Then
                    cryptoStream.Close()
                End If
                If memoryStream IsNot Nothing Then
                    memoryStream.Close()
                End If
                If fsIn IsNot Nothing Then
                    fsIn.Close()


                End If
            End Try
            buffer = decryptText
            Return buffer
        End Function

        Public Sub BufferToEncryptFile(ByVal buffer As String, ByVal folderPath As String)
            'sunil code
            Const PROVIDER_RSA_FULL As Integer = 1
            Const CONTAINER_NAME As String = "KeyContainer"
            Dim cspParams As CspParameters
            cspParams = New CspParameters(PROVIDER_RSA_FULL)
            cspParams.KeyContainerName = CONTAINER_NAME
            cspParams.Flags = CspProviderFlags.UseMachineKeyStore
            cspParams.ProviderName = "Microsoft Strong Cryptographic Provider"

            getPassword()
            Dim originalPath As String = folderPath
            Try
                Dim current As DateTime = DateTime.Now
                Dim RSA As New RSACryptoServiceProvider(cspParams)
                Dim keyToEncrypt As Byte()
                Dim encryptedKey As Byte()
                Dim origName As String = folderPath
                Dim encName As String = origName & ".enc"
                Try
                    crm.EncryptBuffer(buffer, originalPath & "\EncodedBuffer.enc", cryptoKey, cryptoIV)

                    Dim data As Byte() = File.ReadAllBytes(originalPath & "\EncodedBuffer.enc")
                    'delete original file
                    File.Delete(originalPath & "\EncodedBuffer.enc")                   

                    Dim publicprivatexml As String = RSA.ToXmlString(True)              

                    keyToEncrypt = System.Text.ASCIIEncoding.Unicode.GetBytes(pwd)
                    encryptedKey = RSA.Encrypt(keyToEncrypt, False)

                    Using bw As New BinaryWriter(File.Create(originalPath & "\Encrypted.enc"))
                        'Write data
                        bw.Seek(0, SeekOrigin.Begin)
                        bw.Write(data)
                        bw.Write(encryptedKey)
                        bw.Close()

                    End Using

                Catch ex As CryptographicException

                Catch ex As IOException

                Catch ex As UnauthorizedAccessException
                End Try

            Catch ex As Exception
            End Try
        End Sub

    End Class

End Namespace

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