本文整理汇总了VB.NET中System.Security.Cryptography.SignatureDescription类的典型用法代码示例。如果您正苦于以下问题:VB.NET SignatureDescription类的具体用法?VB.NET SignatureDescription怎么用?VB.NET SignatureDescription使用的例子?那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了SignatureDescription类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: Form1
' 导入命名空间
Imports System.Security
Imports System.Security.Cryptography
Public Class Form1
Inherits System.Windows.Forms.Form
' Event handler for Run button.
Private Sub Button1_Click( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
tbxOutput.Cursor = Cursors.WaitCursor
tbxOutput.Text = ""
' Create a digital signature based on RSA encryption.
Dim rsaSignature As SignatureDescription = CreateRSAPKCS1Signature()
ShowProperties(rsaSignature)
' Create a digital signature based on DSA encryption.
Dim dsaSignature As SignatureDescription = CreateDSASignature()
ShowProperties(dsaSignature)
' Create a HashAlgorithm using the digest algorithm of the signature.
Dim hashAlgorithm As HashAlgorithm = dsaSignature.CreateDigest()
WriteLine("Hash algorithm for the DigestAlgorithm property: " + _
hashAlgorithm.ToString())
' Create an AsymmetricSignatureFormatter instance using the DSA key.
Dim dsa As DSA = dsa.Create()
Dim asymmetricFormatter As AsymmetricSignatureFormatter = _
CreateDSAFormatter(dsa)
' Create an AsymmetricSignatureDeformatter instance using the DSA key.
dim asymmetricDeformatter as AsymmetricSignatureDeformatter = _
CreateDSADeformatter(dsa)
' Align interface and conclude application.
WriteLine("This sample completed successfully;" + _
" press Exit to continue.")
' Reset the cursor to the default look.
tbxOutput.Cursor = Cursors.Default
End Sub
' Create a SignatureDescription for RSA encryption.
Private Function CreateRSAPKCS1Signature() As SignatureDescription
Dim signatureDescription As New SignatureDescription
' Set the key algorithm property for RSA encryption.
signatureDescription.KeyAlgorithm = _
"System.Security.Cryptography.RSACryptoServiceProvider"
' Set the digest algorithm for RSA encryption using the SHA1 provider.
signatureDescription.DigestAlgorithm = _
"System.Security.Cryptography.SHA1CryptoServiceProvider"
' Set the formatter algorithm with the RSAPKCS1 formatter.
signatureDescription.FormatterAlgorithm = _
"System.Security.Cryptography.RSAPKCS1SignatureFormatter"
' Set the formatter algorithm with the RSAPKCS1 deformatter.
signatureDescription.DeformatterAlgorithm = _
"System.Security.Cryptography.RSAPKCS1SignatureDeformatter"
Return SignatureDescription
End Function
' Create a SignatureDescription using a constructed SecurityElement for
' DSA encryption.
Private Function CreateDSASignature() As SignatureDescription
Dim securityElement As New SecurityElement("DSASignature")
' Create new security elements for the four algorithms.
securityElement.AddChild(new SecurityElement( _
"Key", _
"System.Security.Cryptography.DSACryptoServiceProvider"))
securityElement.AddChild(New SecurityElement( _
"Digest", _
"System.Security.Cryptography.SHA1CryptoServiceProvider"))
securityElement.AddChild(new SecurityElement( _
"Formatter", _
"System.Security.Cryptography.DSASignatureFormatter"))
securityElement.AddChild(new SecurityElement( _
"Deformatter", _
"System.Security.Cryptography.DSASignatureDeformatter"))
Dim signatureDescription As New SignatureDescription(securityElement)
Return signatureDescription
End Function
' Create a signature formatter for DSA encryption.
Private Function CreateDSAFormatter(ByVal dsa As DSA) _
As AsymmetricSignatureFormatter
' Create a DSA signature formatter for encryption.
Dim signatureDescription As New SignatureDescription
signatureDescription.FormatterAlgorithm = _
"System.Security.Cryptography.DSASignatureFormatter"
Dim asymmetricFormatter As AsymmetricSignatureFormatter
asymmetricFormatter = signatureDescription.CreateFormatter(dsa)
WriteLine("Created formatter : " + asymmetricFormatter.ToString())
Return asymmetricFormatter
End Function
' Create a signature deformatter for DSA decryption.
Private Function CreateDSADeformatter(ByVal dsa As DSA) _
As AsymmetricSignatureDeformatter
' Create a DSA signature deformatter to verify the signature.
Dim signatureDescription As New SignatureDescription
signatureDescription.DeformatterAlgorithm = _
"System.Security.Cryptography.DSASignatureDeformatter"
Dim asymmetricDeformatter As AsymmetricSignatureDeformatter
asymmetricDeformatter = SignatureDescription.CreateDeformatter(dsa)
WriteLine("Created deformatter : " + asymmetricDeformatter.ToString())
Return asymmetricDeformatter
End Function
' Display to the console the properties of the specified
' SignatureDescription.
Private Sub ShowProperties(ByVal signatureDescription _
As SignatureDescription)
' Retrieve the class path for the specified SignatureDescription.
Dim classDescription As String = signatureDescription.ToString()
Dim deformatterAlgorithm As String
deformatterAlgorithm = signatureDescription.DeformatterAlgorithm
Dim formatterAlgorithm As String
formatterAlgorithm = signatureDescription.FormatterAlgorithm
Dim digestAlgorithm As String
digestAlgorithm = signatureDescription.DigestAlgorithm
Dim keyAlgorithm As String
keyAlgorithm = signatureDescription.KeyAlgorithm
WriteLine(vbCrLf + "** " + classDescription + " **")
WriteLine("DeformatterAlgorithm : " + deformatterAlgorithm)
WriteLine("FormatterAlgorithm : " + formatterAlgorithm)
WriteLine("DigestAlgorithm : " + digestAlgorithm)
WriteLine("KeyAlgorithm : " + keyAlgorithm)
End Sub
' Write the specified message and carriage return to the output textbox.
Private Sub WriteLine(ByVal message As String)
tbxOutput.AppendText(message + vbCrLf)
End Sub
' Event handler for Exit button.
Private Sub Button2_Click( _
ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button2.Click
Application.Exit()
End Sub
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents Panel2 As System.Windows.Forms.Panel
Friend WithEvents Panel1 As System.Windows.Forms.Panel
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents Button2 As System.Windows.Forms.Button
Friend WithEvents tbxOutput As System.Windows.Forms.RichTextBox
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.Panel2 = New System.Windows.Forms.Panel
Me.Button1 = New System.Windows.Forms.Button
Me.Button2 = New System.Windows.Forms.Button
Me.Panel1 = New System.Windows.Forms.Panel
Me.tbxOutput = New System.Windows.Forms.RichTextBox
Me.Panel2.SuspendLayout()
Me.Panel1.SuspendLayout()
Me.SuspendLayout()
'
'Panel2
'
Me.Panel2.Controls.Add(Me.Button1)
Me.Panel2.Controls.Add(Me.Button2)
Me.Panel2.Dock = System.Windows.Forms.DockStyle.Bottom
Me.Panel2.DockPadding.All = 20
Me.Panel2.Location = New System.Drawing.Point(0, 320)
Me.Panel2.Name = "Panel2"
Me.Panel2.Size = New System.Drawing.Size(616, 64)
Me.Panel2.TabIndex = 1
'
'Button1
'
Me.Button1.Dock = System.Windows.Forms.DockStyle.Right
Me.Button1.Font = New System.Drawing.Font("Microsoft Sans Serif", _
9.0!, _
System.Drawing.FontStyle.Regular, _
System.Drawing.GraphicsUnit.Point, _
CType(0, Byte))
Me.Button1.Location = New System.Drawing.Point(446, 20)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(75, 24)
Me.Button1.TabIndex = 2
Me.Button1.Text = "&Run"
'
'Button2
'
Me.Button2.Dock = System.Windows.Forms.DockStyle.Right
Me.Button2.Font = New System.Drawing.Font( _
"Microsoft Sans Serif", _
9.0!, _
System.Drawing.FontStyle.Regular, _
System.Drawing.GraphicsUnit.Point, _
CType(0, Byte))
Me.Button2.Location = New System.Drawing.Point(521, 20)
Me.Button2.Name = "Button2"
Me.Button2.Size = New System.Drawing.Size(75, 24)
Me.Button2.TabIndex = 3
Me.Button2.Text = "E&xit"
'
'Panel1
'
Me.Panel1.Controls.Add(Me.tbxOutput)
Me.Panel1.Dock = System.Windows.Forms.DockStyle.Fill
Me.Panel1.DockPadding.All = 20
Me.Panel1.Location = New System.Drawing.Point(0, 0)
Me.Panel1.Name = "Panel1"
Me.Panel1.Size = New System.Drawing.Size(616, 320)
Me.Panel1.TabIndex = 2
'
'tbxOutput
'
Me.tbxOutput.AccessibleDescription = _
"Displays output from application."
Me.tbxOutput.AccessibleName = "Output textbox."
Me.tbxOutput.Dock = System.Windows.Forms.DockStyle.Fill
Me.tbxOutput.Location = New System.Drawing.Point(20, 20)
Me.tbxOutput.Name = "tbxOutput"
Me.tbxOutput.Size = New System.Drawing.Size(576, 280)
Me.tbxOutput.TabIndex = 1
Me.tbxOutput.Text = "Click the Run button to run the application."
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15)
Me.ClientSize = New System.Drawing.Size(616, 384)
Me.Controls.Add(Me.Panel1)
Me.Controls.Add(Me.Panel2)
Me.Name = "Form1"
Me.Text = "SignatureDescription"
Me.Panel2.ResumeLayout(False)
Me.Panel1.ResumeLayout(False)
Me.ResumeLayout(False)
End Sub
#End Region
End Class
输出:
** System.Security.Cryptography.SignatureDescription ** DeformatterAlgorithm : System.Security.Cryptography. RSAPKCS1SignatureDeformatter FormatterAlgorithm : System.Security.Cryptography.RSAPKCS1SignatureFormatter DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider KeyAlgorithm : System.Security.Cryptography.RSACryptoServiceProvider ** System.Security.Cryptography.SignatureDescription ** DeformatterAlgorithm : System.Security.Cryptography.DSASignatureDeformatter FormatterAlgorithm : System.Security.Cryptography.DSASignatureFormatter DigestAlgorithm : System.Security.Cryptography.SHA1CryptoServiceProvider KeyAlgorithm : System.Security.Cryptography.DSACryptoServiceProvider Hash algorithm for the DigestAlgorithm property: System.Security. Cryptography. SHA1CryptoServiceProvider Created formatter : System.Security.Cryptography.DSASignatureFormatter Created deformatter : System.Security.Cryptography.DSASignatureDeformatter This sample completed successfully; press Exit to continue.