Private Shared Sub EncryptData(inName As String, outName As String, _
rijnKey() As Byte, rijnIV() As Byte)

    'Create the file streams to handle the input and output files.
    Dim fin As New FileStream(inName, FileMode.Open, FileAccess.Read)
    Dim fout As New FileStream(outName, FileMode.OpenOrCreate, _
       FileAccess.Write)
    fout.SetLength(0)
    
    'Create variables to help with read and write.
    Dim bin(100) As Byte '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 'Total length of the input file.
    Dim len As Integer 'This is the number of bytes to be written at a time.
    'Creates the default implementation, which is RijndaelManaged.
    Dim rijn As SymmetricAlgorithm = SymmetricAlgorithm.Create()
    Dim encStream As New CryptoStream(fout, _
       rijn.CreateEncryptor(rijnKey, rijnIV), CryptoStreamMode.Write)
    
    Console.WriteLine("Encrypting...")
    
    'Read from the input file, then encrypt and write to the output file.
    While rdlen < totlen
        len = fin.Read(bin, 0, 100)
        encStream.Write(bin, 0, len)
        rdlen = Convert.ToInt32(rdlen + len)
        Console.WriteLine("{0} bytes processed", rdlen)
    End While
    
    encStream.Close()
fout.Close()
fin.Close()
End Sub

' 导入命名空间
Imports System.Security.Cryptography
Imports System.Text
Imports System.IO
Imports System
Imports Microsoft.VisualBasic.ControlChars

Public Class SymKey
    Public Shared Sub Main(ByVal CmdArgs() As String)
        Dim algo() As String = {"DES", "RC2", "Rijndael", "TripleDES"}

        Dim keyStringDeclare As StringBuilder = New StringBuilder
        Dim ivz As StringBuilder = New StringBuilder
        keyStringDeclare.Append("Dim b64Keys() As String = { _" + VbCrLf)
        ivz.Append(vbCrLf + "Dim b64IVs() As String = { _" + vbCrLf)

        Dim comma As String = ", _" + vbCrLf

        For i As Integer = 0 To 3
            Dim sa As SymmetricAlgorithm = SymmetricAlgorithm.Create(algo(i))
            sa.GenerateIV()
            sa.GenerateKey()
            Dim Key As String
            Dim IV As String
            Key = Convert.ToBase64String(sa.Key)
            IV = Convert.ToBase64String(sa.IV)
            keyStringDeclare.AppendFormat(Tab + """" + Key + """" + comma)
            ivz.AppendFormat(Tab + """" + IV + """" + comma)
            If i = 2 Then comma = " "
        Next i

        keyStringDeclare.Append("}")
        ivz.Append("}")
        Console.WriteLine(keyStringDeclare.ToString())
        Console.WriteLine(ivz.ToString())
    End Sub
End Class