System.Net.Security.CAS.RegistryCodeGroupEntry

RegistryCodeGroupEntry Class

The System.Net.Security.CAS.RegistryCodeGroupEntry class represents a code group that is identified by a registry key. This class is part of the .NET Framework's Code Access Security (CAS) model, which allows you to define and manage security policies for assemblies running within the .NET environment.

Overview

Code groups are used to classify assemblies and grant them specific permissions based on their origin, identity, or other characteristics. The RegistryCodeGroupEntry is a specific type of code group that uses a registry key as its membership condition. This means that any assembly whose evidence matches the specified registry key will be considered a member of this code group.

This class is typically used in conjunction with the .NET Framework's security policy tools to manage security for applications that are deployed in specific registry-controlled environments.

Syntax

public sealed class RegistryCodeGroupEntry : System.Security.Policy.CodeGroup
                

Remarks

The RegistryCodeGroupEntry class allows you to define a code group whose membership condition is based on a specific registry key. When the .NET runtime evaluates the security policy, it checks if an assembly's evidence matches the condition defined by this code group.

Key features include:

• Membership Condition: Uses a registry key to determine if an assembly belongs to this group.
• Policy Evaluation: Contributes to the overall security policy evaluation by granting permissions to assemblies that match its criteria.
• Hierarchical Structure: Like other CodeGroup objects, it can have child code groups, forming a hierarchical policy structure.

// Conceptual example of creating and configuring a RegistryCodeGroupEntry
// This code would typically be part of a security policy management tool.

using System.Security.Policy;
using System.Net.Security.CAS; // Assuming this namespace exists for RegistryCodeGroupEntry

// ...

// Create a permission set to grant to members of this code group
PermissionSet executePermissions = new NamedPermissionSet("Execution", SecurityAction.Assert,
    new SecurityPermission(SecurityPermissionFlag.Execution));

// Create a registry membership condition
// This would typically be a string representing a registry key path.
string registryKeyPath = "Software\\MyApp\\Security";
RegistryMembershipCondition registryCondition = new RegistryMembershipCondition(registryKeyPath);

// Create the RegistryCodeGroupEntry
// The 'null' here would be the parent CodeGroup, or a specific parent if nested.
RegistryCodeGroupEntry registryCodeGroup = new RegistryCodeGroupEntry(registryCondition, executePermissions);

// Add child code groups if necessary
// registryCodeGroup.AddChild(new AnotherCodeGroup(...));

// In a real scenario, this code group would be added to the overall policy hierarchy.
                    

Properties

As a derived class of System.Security.Policy.CodeGroup, it inherits all of its properties, including:

• Children: Gets the child code groups of this code group.
• Description: Gets or sets the description of this code group.
• PolicyStatement: Gets the policy statement associated with this code group.
• MembershipCondition: Gets or sets the membership condition for this code group. (For RegistryCodeGroupEntry, this is a RegistryMembershipCondition).
• Name: Gets or sets the name of this code group.
• Tag: Gets or sets a tag that uniquely identifies this code group.

Methods

Inherits methods from System.Security.Policy.CodeGroup, such as:

• AddChild(CodeGroup)
• CheckMembership(Evidence)
• Copy()
• Equals(object)
• GetHashCode()
• Resolve(Evidence)
• ToString()

Requirements

The RegistryCodeGroupEntry class is part of the System.Net.Security namespace within the .NET Framework.

Namespace: System.Net.Security.CAS (or potentially directly under System.Security.Policy depending on specific .NET versions and internal implementations)

Assembly: System.dll (typically)