Maverik

// this snippet can be easily used in any normal c# project as well by simply removing the .Dump() methods
// and saving the output into a variable / file of your choice.
// you'll need to add BouncyCastle.Crypto nuget to use this.
// tested on 1.8.1
// OUTPUTS: CSR, Private Key, Public Key, Self-signed Certificate

using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.X509;