OpenSSL.PrivateKeyDecoder 1.0.1

There is a newer version of this package available.
See the version list below for details.
dotnet add package OpenSSL.PrivateKeyDecoder --version 1.0.1
NuGet\Install-Package OpenSSL.PrivateKeyDecoder -Version 1.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="OpenSSL.PrivateKeyDecoder" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add OpenSSL.PrivateKeyDecoder --version 1.0.1
#r "nuget: OpenSSL.PrivateKeyDecoder, 1.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install OpenSSL.PrivateKeyDecoder as a Cake Addin
#addin nuget:?package=OpenSSL.PrivateKeyDecoder&version=1.0.1

// Install OpenSSL.PrivateKeyDecoder as a Cake Tool
#tool nuget:?package=OpenSSL.PrivateKeyDecoder&version=1.0.1

OpenSSL X509Certificate2 Provider

Parses OpenSSL public and private key components and returns a X509Certificate2 with RSA/RSACryptoServiceProvider. (Based on

Project NuGet
OpenSSL.PrivateKeyDecoder NuGet Badge
OpenSSL.X509Certificate2.Provider NuGet Badge

Support for the following frameworks:

  • .NET 2.0
  • .NET 3.5
  • .NET 4.5 and up
  • .NET Standard 1.3 (also NET Core 1.1)
  • .NET Standard 2.0 (also NET Core 2.0)

Support for decoding RSA Private Key and Private Key.


Generate public certificate + privatekey

Generate public certificate + privatekey using:

openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout private.key -out certificate_pub.crt

Code example 1 - decode private key

If you just want to decode the private key into a RSACryptoServiceProvider, use the following code:

string privateKeyText = File.ReadAllText("private.key");

IOpenSSLPrivateKeyDecoder decoder = new OpenSSLPrivateKeyDecoder();
RSACryptoServiceProvider cryptoServiceProvider = decoder.Decode(privateKeyText);

// Example: sign the data
byte[] hello = new UTF8Encoding().GetBytes("Hello World");
byte[] hashValue = cryptoServiceProvider.SignData(hello, CryptoConfig.MapNameToOID("SHA256"));

// Example: use the PrivateKey from above for signing a JWT token using Jose.Jwt:
string token = Jose.JWT.Encode(payload, cryptoServiceProvider, JwsAlgorithm.RS256);

Code example 2 - Create a X509 certificate and add private key

string certificateText = File.ReadAllText("certificate_pub.crt");
string privateKeyText = File.ReadAllText("private.key");

ICertificateProvider provider = new CertificateFromFileProvider(certificateText, privateKeyText);
X509Certificate2 certificate = provider.Certificate;

// Example: use the PrivateKey from the certificate above for signing a JWT token using Jose.Jwt:
string token = Jose.JWT.Encode(payload, certificate.PrivateKey, JwsAlgorithm.RS256);
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.3 is compatible.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 was computed.  netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net20 is compatible.  net35 is compatible.  net40 was computed.  net403 was computed.  net45 is compatible.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (4)

Showing the top 4 NuGet packages that depend on OpenSSL.PrivateKeyDecoder:

Package Downloads

Parses OpenSSL public and private (rsa) key components and returns a X509Certificate2 with RSACryptoServiceProvider.


Package Description



Jira Service 'this version is released just for test'

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.3.0 722,187 8/18/2018
1.2.0 244,340 3/7/2018
1.1.0 1,338 3/3/2018 1,603 10/28/2017
1.0.1 2,324 10/8/2017
1.0.0 1,565 7/20/2017

Fixed issue (#3) and added NET Standard 2.0