System.Security.Cryptography.ProtectedData 11.0.0-preview.5.26302.115

About

System.Security.Cryptography.ProtectedData offers a simplified interface for utilizing Microsoft Windows DPAPI's CryptProtectData and CryptUnprotectData functions.

Note: Since it relies on Windows DPAPI, this package is only supported on Windows platforms. For more complex cryptographic operations or cross-platform support, consider the System.Security.Cryptography namespace.

Key Features

  • Built upon the robust and secure Windows Data Protection API (DPAPI).
  • Data can be protected either for current process or for any process on the machine.
  • Scope of protection can be defined either to the current user or the local machine.

How to Use

Utilizing this package is quite simple, and it mainly revolves around two methods: Protect and Unprotect.

Here, originalData is the data you want to protect, optionalEntropy is an additional byte array used to increase encryption complexity, and DataProtectionScope specifies whether the data protection should apply to the current user or the machine.

using System.Security.Cryptography;
using System.Text;

byte[] originalData = Encoding.UTF8.GetBytes("This is a secret");
byte[] optionalEntropy = new byte[64];
Random.Shared.NextBytes(optionalEntropy);

// To protect:
byte[] encryptedData = ProtectedData.Protect(
    originalData,
    optionalEntropy,
    DataProtectionScope.CurrentUser);

// To unprotect:
byte[] decryptedData = ProtectedData.Unprotect(
    encryptedData,
    optionalEntropy,
    DataProtectionScope.CurrentUser);

Main Types

The main type provided by this library is:

  • System.Security.Cryptography.ProtectedData

Additional Documentation

Feedback & Contributing

System.Security.Cryptography.ProtectedData is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Showing the top 20 packages that depend on System.Security.Cryptography.ProtectedData.

Packages Downloads
System.Configuration.ConfigurationManager
Provides types that support using configuration files. Commonly Used Types: System.Configuration.Configuration System.Configuration.ConfigurationManager When using NuGet 3.x this package requires at least version 3.4.
1,613
System.Configuration.ConfigurationManager
Provides types that support using configuration files. Commonly Used Types: System.Configuration.Configuration System.Configuration.ConfigurationManager When using NuGet 3.x this package requires at least version 3.4.
131
Microsoft.Build
This package contains the Microsoft.Build assembly which is used to create, edit, and evaluate MSBuild projects.
45
Microsoft.CodeAnalysis.Features
.NET Compiler Platform ("Roslyn") support for creating editing experiences. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/5e3a11e2e7f952da93f9d35bd63a2fa181c0608b.
44
Microsoft.VisualStudio.Web.CodeGeneration.Design
Code Generation tool for ASP.NET Core. Contains the dotnet-aspnet-codegenerator command used for generating controllers and views.
43
Microsoft.Build
This package contains the Microsoft.Build assembly which is used to create, edit, and evaluate MSBuild projects.
42
Microsoft.VisualStudio.Web.CodeGeneration.Design
Code Generation tool for ASP.NET Core. Contains the dotnet-aspnet-codegenerator command used for generating controllers and views.
42
Microsoft.CodeAnalysis.Features
.NET Compiler Platform ("Roslyn") support for creating editing experiences. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/bde21ee2b98b775b010d01a93f81ef587fe80962.
41
Microsoft.CodeAnalysis.Workspaces.MSBuild
.NET Compiler Platform ("Roslyn") support for analyzing MSBuild projects and solutions. This should be used with at least one of the following packages to add the appropriate language support: - Microsoft.CodeAnalysis.CSharp.Workspaces - Microsoft.CodeAnalysis.VisualBasic.Workspaces More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/e68227ea677b76a3c603bd616f03ea6d952b2458.
41
Microsoft.VisualStudio.Web.CodeGeneration.Core
Contains the core infrastructure used by ASP.NET Core Code Generators.
39
Microsoft.VisualStudio.Web.CodeGenerators.Mvc
Code Generators for ASP.NET Core MVC. Contains code generators for MVC Controllers and Views.
39
Microsoft.CodeAnalysis.Features
.NET Compiler Platform ("Roslyn") support for creating editing experiences. More details at https://aka.ms/roslyn-packages This package was built from the source at https://github.com/dotnet/roslyn/commit/1ff281352c76f1a56ae8e49af9c4c4ef0e0f0f42.
39
Microsoft.Build.Tasks.Core
This package contains the Microsoft.Build.Tasks assembly which implements the commonly used tasks of MSBuild.
38
Microsoft.DotNet.Scaffolding.Shared
Contains interfaces for Project Model and messaging for scaffolding.
38
Microsoft.Identity.Client.Extensions.Msal
This package contains the public client (desktop) caching to Microsoft Authentication Library for .NET (MSAL.NET)
38
System.Configuration.ConfigurationManager
Provides types that support using XML configuration files (app.config). This package exists only to support migrating existing .NET Framework code that already uses System.Configuration. When writing new code, use another configuration system instead, such as Microsoft.Extensions.Configuration.
38
System.Configuration.ConfigurationManager
Provides types that support using XML configuration files (app.config). This package exists only to support migrating existing .NET Framework code that already uses System.Configuration. When writing new code, use another configuration system instead, such as Microsoft.Extensions.Configuration.
37

.NET 10.0

  • No dependencies.

.NET 11.0

  • No dependencies.

.NET Framework 4.6.2

  • No dependencies.

.NET Standard 2.0

Version Downloads Last updated
11.0.0-preview.5.26302.115 8 06/10/2026
11.0.0-preview.4.26230.115 11 05/14/2026
11.0.0-preview.3.26207.106 27 04/15/2026
11.0.0-preview.2.26159.112 32 03/11/2026
11.0.0-preview.1.26104.118 36 02/15/2026
10.0.9 6 06/10/2026
10.0.8 9 05/14/2026
10.0.7 25 04/22/2026
10.0.6 30 04/16/2026
10.0.5 23 03/13/2026
10.0.4 25 03/12/2026
10.0.3 30 02/15/2026
10.0.2 35 01/14/2026
10.0.1 40 12/10/2025
10.0.0 37 12/10/2025
10.0.0-rc.2.25502.107 33 12/10/2025
10.0.0-rc.1.25451.107 31 12/13/2025
10.0.0-preview.7.25380.108 30 12/20/2025
10.0.0-preview.6.25358.103 34 12/21/2025
10.0.0-preview.5.25277.114 25 12/10/2025
10.0.0-preview.4.25258.110 31 12/11/2025
10.0.0-preview.3.25171.5 21 12/21/2025
10.0.0-preview.2.25163.2 25 12/13/2025
10.0.0-preview.1.25080.5 30 12/11/2025
9.0.17 5 06/10/2026
9.0.16 12 05/14/2026
9.0.15 30 04/16/2026
9.0.14 24 03/12/2026
9.0.13 33 02/15/2026
9.0.12 38 01/14/2026
9.0.11 34 12/11/2025
9.0.10 26 12/11/2025
9.0.9 29 12/13/2025
9.0.8 30 12/20/2025
9.0.7 25 12/14/2025
9.0.6 21 12/13/2025
9.0.5 27 12/29/2025
9.0.4 34 12/10/2025
9.0.3 23 12/20/2025
9.0.2 29 12/10/2025
9.0.1 35 12/11/2025
9.0.0 35 12/13/2025
9.0.0-rc.2.24473.5 24 12/10/2025
9.0.0-rc.1.24431.7 27 12/15/2025
9.0.0-preview.7.24405.7 27 12/10/2025
9.0.0-preview.6.24327.7 26 12/21/2025
9.0.0-preview.5.24306.7 26 12/12/2025
9.0.0-preview.4.24266.19 28 12/14/2025
9.0.0-preview.3.24172.9 29 12/13/2025
9.0.0-preview.2.24128.5 27 12/13/2025
9.0.0-preview.1.24080.9 26 12/21/2025
8.0.0 29 12/12/2025
8.0.0-rc.2.23479.6 29 12/13/2025
8.0.0-rc.1.23419.4 26 12/13/2025
8.0.0-preview.7.23375.6 30 12/13/2025
8.0.0-preview.6.23329.7 29 12/12/2025
8.0.0-preview.5.23280.8 29 12/09/2025
8.0.0-preview.4.23259.5 27 12/11/2025
8.0.0-preview.3.23174.8 27 12/13/2025
8.0.0-preview.2.23128.3 21 12/15/2025
8.0.0-preview.1.23110.8 31 12/14/2025
7.0.1 26 12/11/2025
7.0.0 28 12/20/2025
7.0.0-rc.2.22472.3 30 12/20/2025
7.0.0-rc.1.22426.10 27 12/14/2025
7.0.0-preview.7.22375.6 24 12/21/2025
7.0.0-preview.6.22324.4 27 12/12/2025
7.0.0-preview.5.22301.12 19 12/20/2025
7.0.0-preview.4.22229.4 27 12/21/2025
7.0.0-preview.3.22175.4 33 12/13/2025
7.0.0-preview.2.22152.2 25 12/21/2025
7.0.0-preview.1.22076.8 31 12/10/2025
6.0.2-mauipre.1.22102.15 29 12/14/2025
6.0.2-mauipre.1.22054.8 27 12/14/2025
6.0.0 28 12/13/2025
6.0.0-rc.2.21480.5 28 12/13/2025
6.0.0-rc.1.21451.13 28 12/13/2025
6.0.0-preview.7.21377.19 27 12/21/2025
6.0.0-preview.6.21352.12 28 12/10/2025
6.0.0-preview.5.21301.5 26 12/10/2025
6.0.0-preview.4.21253.7 27 12/21/2025
6.0.0-preview.3.21201.4 20 12/09/2025
6.0.0-preview.2.21154.6 24 12/21/2025
6.0.0-preview.1.21102.12 32 12/13/2025
5.0.0 28 12/20/2025
5.0.0-rc.2.20475.5 33 12/13/2025
5.0.0-rc.1.20451.14 27 12/09/2025
5.0.0-preview.8.20407.11 30 12/20/2025
5.0.0-preview.7.20364.11 26 12/15/2025
5.0.0-preview.6.20305.6 31 12/21/2025
5.0.0-preview.5.20278.1 28 12/13/2025
5.0.0-preview.4.20251.6 23 12/13/2025
5.0.0-preview.3.20214.6 30 12/13/2025
5.0.0-preview.2.20160.6 25 12/12/2025
5.0.0-preview.1.20120.5 30 12/21/2025
4.7.0 139 12/20/2025
4.7.0-preview3.19551.4 25 12/21/2025
4.7.0-preview2.19523.17 32 12/13/2025
4.7.0-preview1.19504.10 32 12/21/2025
4.6.0 1,613 12/10/2025
4.6.0-rc1.19456.4 30 12/15/2025
4.6.0-preview9.19421.4 34 12/13/2025
4.6.0-preview9.19416.11 32 12/10/2025
4.6.0-preview8.19405.3 28 12/16/2025
4.6.0-preview7.19362.9 26 12/13/2025
4.6.0-preview6.19303.8 26 12/21/2025
4.6.0-preview6.19264.9 26 12/13/2025
4.6.0-preview5.19224.8 27 12/15/2025
4.6.0-preview4.19212.13 28 12/15/2025
4.6.0-preview3.19128.7 27 12/21/2025
4.6.0-preview.19073.11 29 12/13/2025
4.6.0-preview.18571.3 27 12/21/2025
4.5.0 27 12/20/2025
4.5.0-rc1 26 12/13/2025
4.5.0-preview2-26406-04 31 12/13/2025
4.5.0-preview1-26216-02 23 12/21/2025
4.5.0-preview1-25914-04 27 12/21/2025
4.4.0 31 12/20/2025
4.4.0-preview2-25405-01 33 12/21/2025
4.4.0-preview1-25305-02 28 12/13/2025
4.3.0 28 12/20/2025
4.3.0-preview1-24530-04 19 12/21/2025
4.0.0 28 12/20/2025