本文整理汇总了VB.NET中System.Security.Cryptography.DataProtector类的典型用法代码示例。如果您正苦于以下问题：VB.NET DataProtector类的具体用法？VB.NET DataProtector怎么用？VB.NET DataProtector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DataProtector类的2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: New
' 导入命名空间
Imports System.Security
Imports System.Security.Cryptography
Imports System.Security.Permissions
Public NotInheritable Class MyDataProtector
Inherits DataProtector
Public Property Scope() As DataProtectionScope
Get
Return Scope
End Get
Set(value As DataProtectionScope)
End Set
End Property ' This implementation gets the HashedPurpose from the base class and passes it as OptionalEntropy to ProtectedData.
' The default for DataProtector is to prepend the hash to the plain text, but because we are using the hash
' as OptionalEntropy there is no need to prepend it.
Protected Overrides ReadOnly Property PrependHashedPurposeToPlaintext() As Boolean
Get
Return False
End Get
End Property
' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission
' in the constructor, but Assert the permission when ProviderProtect is called. This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, ProtectData:=True)> _
Protected Overrides Function ProviderProtect(ByVal userData() As Byte) As Byte()
' Delegate to ProtectedData
Return ProtectedData.Protect(userData, GetHashedPurpose(), Scope)
End Function 'ProviderProtect
' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission
' in the constructor, but Assert the permission when ProviderUnProtect is called. This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, UnprotectData:=True)> _
Protected Overrides Function ProviderUnprotect(ByVal encryptedData() As Byte) As Byte()
' Delegate to ProtectedData
Return ProtectedData.Unprotect(encryptedData, GetHashedPurpose(), Scope)
End Function 'ProviderUnprotect
Public Overrides Function IsReprotectRequired(ByVal encryptedData() As Byte) As Boolean
' For now, this cannot be determined, so always return true;
Return True
End Function 'IsReprotectRequired
' Public constructor
' The Demand for DataProtectionPermission is in the constructor because we Assert this permission
' in the ProviderProtect/ProviderUnprotect methods.
<DataProtectionPermission(SecurityAction.Demand, Unrestricted:=True), SecuritySafeCritical()> _
Public Sub New(ByVal appName As String, ByVal primaryPurpose As String, ParamArray specificPurpose() As String)
MyBase.New(appName, primaryPurpose, specificPurpose)
End Sub
End Class示例2: New
' 导入命名空间
Imports System.Security
Imports System.Security.Permissions
Imports System.Security.Cryptography
Public NotInheritable Class MemoryProtector
Inherits DataProtector
Public Property Scope() As MemoryProtectionScope
Get
Return Scope
End Get
Set(value As MemoryProtectionScope)
End Set
End Property
Protected Overrides ReadOnly Property PrependHashedPurposeToPlaintext() As Boolean
Get
' Signal the DataProtector to prepend the hash of the purpose to the data.
Return True
End Get
End Property
' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission
' in the constructor, but Assert the permission when ProviderProtect is called. This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, ProtectData:=True)> _
Protected Overrides Function ProviderProtect(ByVal userData() As Byte) As Byte()
' Delegate to ProtectedData
ProtectedMemory.Protect(userData, Scope)
Return userData
End Function 'ProviderProtect
' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission
' in the constructor, but Assert the permission when ProviderUnprotect is called.. This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, UnprotectData:=True)> _
Protected Overrides Function ProviderUnprotect(ByVal encryptedData() As Byte) As Byte()
ProtectedMemory.Unprotect(encryptedData, Scope)
Return encryptedData
End Function 'ProviderUnprotect
Public Overrides Function IsReprotectRequired(ByVal encryptedData() As Byte) As Boolean
' For now, this cannot be determined so always return true.
Return True
End Function 'IsReprotectRequired
' Public constructor
' The Demand for DataProtectionPermission is in the constructor because we Assert this permission
' in the ProviderProtect/ProviderUnprotect methods.
<DataProtectionPermission(SecurityAction.Demand, Unrestricted:=True), SecuritySafeCritical()> _
Public Sub New(ByVal appName As String, ByVal primaryPurpose As String, ParamArray specificPurpose() As String)
MyBase.New(appName, primaryPurpose, specificPurpose)
End Sub
End Class