 |
 |
PowerTCP SSL Sockets for .NET |
| Dart.PowerTCP.SslSockets Namespace > SymmetricCryptoStream Class : FlushFinalBlock Method |
|
|
PowerTCP SSL Sockets for .NET |
| Dart.PowerTCP.SslSockets Namespace > SymmetricCryptoStream Class : FlushFinalBlock Method |
Updates the underlying data source or repository with the current state of the buffer, then clears the buffer.
[Visual Basic]
Public Sub FlushFinalBlock() [C#]
public void FlushFinalBlock();[C++]
public: void FlushFinalBlock(); [C++/CLI]
public:
void FlushFinalBlock(); You MUST call this method after writing data (to encrypt it) to the SymmetricCryptoStream.
The following example demonstrates encrypting data and writing to a SymmetricCryptoStream on the fly.
[Visual Basic]
' Create a key and some data.
Dim key As Byte() = System.Text.Encoding.Default.GetBytes("test key")
Dim data As Byte() = System.Text.Encoding.Default.GetBytes("This is the plain text data")
' Create a FileStream to hold the data
Dim f As System.IO.FileStream = New System.IO.FileStream("C:\encrypted\file.txt", System.IO.FileMode.Create)
Dim sc As New SymmetricCryptoStream(AlgorithmType.Rijndael, key, f)
' Always must flush the final block after writing.
sc.FlushFinalBlock()
f.Position=0
f.Close()
' The data is now encrypted and saved to a file. To decrypt, simply initialize a SymmetricCryptoStream
' in the same way as demonstrated above and read from the Filestream, instead of writing to it.
[C#]
// Create a key and some data.
byte[] key =
System.Text.Encoding.Default.GetBytes("test key");
byte[] data = System.Text.Encoding.Default.GetBytes("This is the plain text data");
// Create a FileStream to hold the data
System.IO.FileStream f = new System.IO.FileStream("C:\\encrypted\file.txt",
System.IO.FileMode.Create);
SymmetricCryptoStream sc = new SymmetricCryptoStream(key, f);
// Write to the file. This encrypts the data.
sc.Write(data, 0, data.Length);
// Always must flush the final block after writing.
sc.FlushFinalBlock();
f.Position=0;
f.Close();
// The data is now encrypted and saved to a file. To decrypt, simply initialize a SymmetricCryptoStream
// in the same way as demonstrated above and read from the Filestream, instead of writing to it.
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
SymmetricCryptoStream Class | SymmetricCryptoStream Members
Send comments on this topic.
Documentation version 1.1.2.0.
© 2008 Dart Communications. All rights reserved.