https://github.com/stefh/openssl-x509certificate2-provider

Parses OpenSSL public and private key components and returns a X509Certificate2 with RSACryptoServiceProvider. Based on opensslkey
https://github.com/stefh/openssl-x509certificate2-provider

Last synced: 4 days ago
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Parses OpenSSL public and private key components and returns a X509Certificate2 with RSACryptoServiceProvider. Based on opensslkey

• Host: GitHub
• URL: https://github.com/stefh/openssl-x509certificate2-provider
• Owner: StefH
• License: mit
• Created: 2017-07-16T08:14:27.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2021-06-26T06:43:01.000Z (over 3 years ago)
• Last Synced: 2024-04-14T13:08:18.931Z (7 months ago)
• Language: C#
• Homepage:
• Size: 2.13 MB
• Stars: 52
• Watchers: 7
• Forks: 14
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        
# OpenSSL X509Certificate2 Provider

Parses OpenSSL public and private key components and returns a **X509Certificate2** with **RSA/RSACryptoServiceProvider**. (Based on [http://www.jensign.com/opensslkey/opensslkey.cs (Archive Link)](https://web.archive.org/web/20171205121514/http://www.jensign.com/opensslkey/opensslkey.cs))

| Project | NuGet |

| ------- | ----- |

| OpenSSL.PrivateKeyDecoder | [![NuGet Badge](https://buildstats.info/nuget/OpenSSL.PrivateKeyDecoder)](https://www.nuget.org/packages/OpenSSL.PrivateKeyDecoder) |

| OpenSSL.PublicKeyDecoder | [![NuGet Badge](https://buildstats.info/nuget/OpenSSL.PublicKeyDecoder)](https://www.nuget.org/packages/OpenSSL.PublicKeyDecoder) |

| OpenSSL.X509Certificate2.Provider | [![NuGet Badge](https://buildstats.info/nuget/OpenSSL.X509Certificate2.Provider)](https://www.nuget.org/packages/OpenSSL.X509Certificate2.Provider) |

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 and 2.1)

Support for decoding `RSA Private Key`, `Private Key` and `Public Key`.

## Example

### 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 into RSAParameters

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

```csharp

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

IOpenSSLPrivateKeyDecoder decoder = new OpenSSLPrivateKeyDecoder();

RSAParameters parameters = decoder.DecodeParameters(privateKeyText);

// do something with the parameters ...

```

### Code example 2 - decode private key into a RSACryptoServiceProvider

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

```csharp

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 3 - Create a X509 certificate and add private key

```csharp

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);

```

### Code example 4 - decode openssl RSA public key into RSAParameters

If you just want to decode the rsa public key into RSAParameters, use the following code:

Export the public key from the private key with openssl

```

openssl rsa -in private.key -out public.key -pubout

```

```csharp

string publicKeyText = File.ReadAllText("public.key");

IOpenSSLPublicKeyDecoder decoder = new OpenSSLPublicKeyDecoder();

RSAParameters parameters = decoder.DecodeParameters(publicKeyText);

```