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Cryptography 101 for the .NET Framework

, 22 Dec 2006
An introduction to key cryptographic concepts supported by the .NET Framework.
cryptohelper.zip
CryptoHelper
bin
Release
CryptoHelper.dll
My Project
Application.myapp
Settings.settings
SimpleEncryptor
bin
Release
CryptoHelper.dll
SimpleEncryptor.exe
SimpleEncryptor.vshost.exe
My Project
Application.myapp
Settings.settings
SimpleEncryptor.vbproj.user
'------------------------------------------------------------------------------
' <auto-generated>
'     This code was generated by a tool.
'     Runtime Version:2.0.50727.42
'
'     Changes to this file may cause incorrect behavior and will be lost if
'     the code is regenerated.
' </auto-generated>
'------------------------------------------------------------------------------

Option Strict On
Option Explicit On


Namespace My
    
    <Global.System.Runtime.CompilerServices.CompilerGeneratedAttribute(),  _
     Global.System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "8.0.0.0"),  _
     Global.System.ComponentModel.EditorBrowsableAttribute(Global.System.ComponentModel.EditorBrowsableState.Advanced)>  _
    Partial Friend NotInheritable Class MySettings
        Inherits Global.System.Configuration.ApplicationSettingsBase
        
        Private Shared defaultInstance As MySettings = CType(Global.System.Configuration.ApplicationSettingsBase.Synchronized(New MySettings),MySettings)
        
#Region "My.Settings Auto-Save Functionality"
#If _MyType = "WindowsForms" Then
    Private Shared addedHandler As Boolean

    Private Shared addedHandlerLockObject As New Object

    <Global.System.Diagnostics.DebuggerNonUserCodeAttribute(), Global.System.ComponentModel.EditorBrowsableAttribute(Global.System.ComponentModel.EditorBrowsableState.Advanced)> _
    Private Shared Sub AutoSaveSettings(ByVal sender As Global.System.Object, ByVal e As Global.System.EventArgs)
        If My.Application.SaveMySettingsOnExit Then
            My.Settings.Save()
        End If
    End Sub
#End If
#End Region
        
        Public Shared ReadOnly Property [Default]() As MySettings
            Get
                
#If _MyType = "WindowsForms" Then
               If Not addedHandler Then
                    SyncLock addedHandlerLockObject
                        If Not addedHandler Then
                            AddHandler My.Application.Shutdown, AddressOf AutoSaveSettings
                            addedHandler = True
                        End If
                    End SyncLock
                End If
#End If
                Return defaultInstance
            End Get
        End Property
    End Class
End Namespace

Namespace My
    
    <Global.Microsoft.VisualBasic.HideModuleNameAttribute(),  _
     Global.System.Diagnostics.DebuggerNonUserCodeAttribute(),  _
     Global.System.Runtime.CompilerServices.CompilerGeneratedAttribute()>  _
    Friend Module MySettingsProperty
        
        <Global.System.ComponentModel.Design.HelpKeywordAttribute("My.Settings")>  _
        Friend ReadOnly Property Settings() As Global.TobyEmden.Security.Encryption.My.MySettings
            Get
                Return Global.TobyEmden.Security.Encryption.My.MySettings.Default
            End Get
        End Property
    End Module
End Namespace

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Toby Emden
Architect
United States United States
Toby Emden has been coding since the early days of 8-bit home computers, when developers had to write pure assembly to get anything worthwhile done. As a mere ankle-biter, his first coding projects included several games written for the ZX Spectrum in pure Z80 assembly code. Nowadays, his languages of choice are C++, C# and Java.
 
A member of the IEEE Computer Society and Worldwide Institute of Software Architects, Toby has spent ten years as an I.T. security executive, delivering enterprise security solutions for Fortune 100 organizations.
 
When not boring people at parties with jokes about cryptography and polymorphism, he enjoys writing, traveling and spending quality time with his wife and three cats. He still hasn't figured out how to cure cancer with .NET, but figures world peace can be solved with a Java wrapper class.

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Web01 | 2.8.140721.1 | Last Updated 22 Dec 2006
Article Copyright 2006 by Toby Emden
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