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Xceed Encryption Library Documentation
Examples / Encrypting and decrypting from memory to file (VB.NET example)
Encrypting and decrypting from memory to file (VB.NET example)
VB.NET - Encryption Copy Code

Dim encrypt As New XceedEncryptionLib.XceedEncryptionClass() 

encrypt.License( "your license key" ) 

Dim rijndael As New XceedEncryptionLib.XceedRijndaelEncryptionMethodClass()
Dim source As Object = "This is the data to encrypt"

Try
  rijndael.SetSecretKeyFromPassPhrase( "This is a weak pass phrase", 128 )

  encrypt.EncryptionMethod = rijndael
  encrypt.WriteFile( source, XceedEncryptionLib.EXEFileProcessing.efpEncrypt, true, _
                     "c:\test\file.enc", false )

 

Catch except As System.Runtime.InteropServices.COMException

MessageBox.Show( except.ToString() )

End Try

VB.NET - Decryption Copy Code

Dim encrypt As New XceedEncryptionLib.XceedEncryptionClass() 

encrypt.License( "your license key" ) 

Dim rijndael As New XceedEncryptionLib.XceedRijndaelEncryptionMethodClass() 

Try
  rijndael.SetSecretKeyFromPassPhrase( "This is a weak pass phrase", 128 )

  encrypt.EncryptionMethod = rijndael 

  Dim bytesRead As Object = Nothing
  Dim decryptedData As Object = encrypt.ReadFile( "c:\test\file.enc", 0, 0, _
                                                  XceedEncryptionLib.EXEFileProcessing.efpDecrypt,
                                                  true, bytesRead ) 

  MessageBox.Show( System.Text.Encoding.Unicode.GetString( CType( decryptedData, byte() ) ) )       
Catch except As System.Runtime.InteropServices.COMException
  MessageBox.Show( except.ToString() )
End Try

 

 

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