/// <summary>
/// Create self signed cert
/// </summary>
/// <param name="signature"></param>
/// <param name="subject"></param>
/// <returns></returns>
internal static AsymmetricAlgorithm CreateCsr(this SignatureType signature, string subject,
out CertificateRequest csr)
{
AsymmetricAlgorithm alg = null;
try {
if (signature.IsRSA())
{
var rsa = RSA.Create();
alg = rsa;
csr = new CertificateRequest(X500DistinguishedNameEx.Create(subject),
rsa, signature.ToHashAlgorithmName(), signature.ToRSASignaturePadding());
return(alg);
}
if (signature.IsECC())
{
var ecdsa = ECDsa.Create();
alg = ecdsa;
csr = new CertificateRequest(X500DistinguishedNameEx.Create(subject),
ecdsa, signature.ToHashAlgorithmName());
return(alg);
}
throw new ArgumentException("Bad signature");
}
catch {
alg?.Dispose();
throw;
}
}
/// <summary>
/// Convert buffer to certificate request
/// </summary>
/// <param name="buffer"></param>
/// <returns></returns>
public static CertificationRequest ToCertificationRequest(this byte[] buffer)
{
var csr = buffer.ToCertificationRequestInfo();
var key = csr.GetPublicKey();
var extensions = new List <X509Extension>();
foreach (var extension in csr.GetX509Extensions().ToX509Extensions())
{
extensions.Add(extension);
}
return(new CertificationRequest {
RawData = buffer,
PublicKey = key,
Extensions = extensions,
Subject = X500DistinguishedNameEx.Create(csr.Subject.ToString())
});
}