CryptoConfig Class
Accesses the cryptography configuration information.
Assembly: mscorlib (in mscorlib.dll)
| Name | Description | |
|---|---|---|
![]() | CryptoConfig() | Initializes a new instance of the CryptoConfig class. |
| Name | Description | |
|---|---|---|
![]() ![]() | AllowOnlyFipsAlgorithms | Indicates whether the runtime should enforce the policy to create only Federal Information Processing Standard (FIPS) certified algorithms. |
| Name | Description | |
|---|---|---|
![]() ![]() | AddAlgorithm(Type, String()) | Adds a set of names to algorithm mappings to be used for the current application domain. |
![]() ![]() | AddOID(String, String()) | Adds a set of names to object identifier (OID) mappings to be used for the current application domain. |
![]() ![]() | CreateFromName(String) | Creates a new instance of the specified cryptographic object. |
![]() ![]() | CreateFromName(String, Object()) | Creates a new instance of the specified cryptographic object with the specified arguments. |
![]() ![]() | EncodeOID(String) | Encodes the specified object identifier (OID). |
![]() | Equals(Object) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() ![]() | MapNameToOID(String) | Gets the object identifier (OID) of the algorithm corresponding to the specified simple name. |
![]() | MemberwiseClone() | |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
The following table shows the simple names recognized by this class and the default algorithm implementations to which they map. Alternatively, you can map other implementations to these names, as described in Mapping Algorithm Names to Cryptography Classes.
Simple name | Algorithm implementation |
|---|---|
3DES, Triple DES, TripleDES, System.Security.Cryptography.TripleDES | |
AES, System.Security.Cryptography.AesCryptoServiceProvider | |
AesManaged, System.Security.Cryptography.AesManaged | |
System.Security.Cryptography.AsymmetricAlgorithm | |
DES, System.Security.Cryptography.DES | |
DSA, System.Security.Cryptography.DSA | |
ECDH, ECDiffieHellman, ECDiffieHellmanCng, System.Security.Cryptography.ECDiffieHellmanCng | |
ECDsa, ECDsaCng, System.Security.Cryptography.ECDsaCng | |
System.Security.Cryptography.HashAlgorithm | |
HMAC, System.Security.Cryptography.HMAC | |
HMACMD5, System.Security.Cryptography.HMACMD5 | |
HMACRIPEMD160, System.Security.Cryptography.HMACRIPEMD160 | |
HMACSHA1, System.Security.Cryptography.HMACSHA1 | |
HMACSHA256, System.Security.Cryptography.HMACSHA256 | |
HMACSHA384, System.Security.Cryptography.HMACSHA384 | |
HMACSHA512, System.Security.Cryptography.HMACSHA512 | |
System.Security.Cryptography.KeyedHashAlgorithm | |
MACTripleDES, System.Security.Cryptography.MACTripleDES | |
MD5, System.Security.Cryptography.MD5 | |
System.Security.Cryptography.MD5Cng | |
RandomNumberGenerator | |
RC2, System.Security.Cryptography.RC2 | |
Rijndael, System.Security.Cryptography.Rijndael | |
RIPEMD160, RIPEMD-160, System.Security.Cryptography.RIPEMD160Managed | |
RSA, System.Security.Cryptography.RSA | |
SHA, SHA1, System.Security.Cryptography.SHA1 | |
System.Security.Cryptography.SHA1Cng | |
SHA256, SHA-256, System.Security.Cryptography.SHA256 | |
System.Security.Cryptography.SHA256Cng | |
System.Security.Cryptography.SHA256CryptoServiceProvider | |
SHA384, SHA-384, System.Security.Cryptography.SHA384 | |
System.Security.Cryptography.SHA384Cng | |
System.Security.Cryptography.SHA384CryptoServiceProvider | |
SHA512, SHA-512, System.Security.Cryptography.SHA512 | |
System.Security.Cryptography.SHA512Cng | |
System.Security.Cryptography.SHA512CryptoServiceProvider | |
System.Security.Cryptography.SymmetricAlgorithm |
The following code example demonstrates how to use members of the CryptoConfig class.
Imports System 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 CryptoConfig object to store configuration information. Dim cryptoConfig As New CryptoConfig ' Retrieve the class path for CryptoConfig. Dim classDescription As String = cryptoConfig.ToString() ' Create a new SHA1 provider. Dim SHA1alg As SHA1CryptoServiceProvider SHA1alg = CType( _ cryptoConfig.CreateFromName("SHA1"), SHA1CryptoServiceProvider) ' Create an RSAParameters with the TestContainer key container. Dim parameters As New CspParameters parameters.KeyContainerName = "TestContainer" Dim argsArray() = New Object() {parameters} ' Instantiate the RSA provider instance accessing the key container ' TestContainer. Dim rsaProvider As New RSACryptoServiceProvider rsaProvider = CType(cryptoConfig.CreateFromName( _ "RSA", argsArray), _ RSACryptoServiceProvider) ' Use the MapNameToOID method to get an object identifier. ' (OID) from the string name of the SHA1 algorithm. Dim sha1Oid As String = cryptoConfig.MapNameToOID("SHA1") ' Encode the specified object identifier. Dim encodedMessage() As Byte = cryptoConfig.EncodeOID(sha1Oid) ' Display the results to the console. tbxOutput.AppendText("** " + classDescription + " **" + vbCrLf) tbxOutput.AppendText("Created an RSA provider with a ") tbxOutput.AppendText("KeyContainerName called ") tbxOutput.AppendText(parameters.KeyContainerName + "." + vbCrLf) tbxOutput.AppendText("Object identifier from the SHA1 name:") tbxOutput.AppendText(sha1Oid + vbCrLf) tbxOutput.AppendText("The object identifier encoded: ") tbxOutput.AppendText( _ System.Text.Encoding.ASCII.GetString(encodedMessage)) ' Reset the cursor and conclude application. tbxOutput.AppendText(vbCrLf + "This sample completed " + _ "successfully; press Exit to continue.") tbxOutput.Cursor = Cursors.Default 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 = "CryptoConfig" Me.Panel2.ResumeLayout(False) Me.Panel1.ResumeLayout(False) Me.ResumeLayout(False) End Sub #End Region End Class ' ' This sample produces the following output: ' ' ** System.Security.Cryptography.CryptoConfig ** ' Created an RSA provider with a KeyContainerName called TestContainer. ' Object identifier from the SHA1 name:1.3.14.3.2.26 ' The object identifier encoded: 6767gG&*(* ' This sample completed successfully; press Exit to continue.
Available since 1.1
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



