private string GenerateHash(Stream data)
{
using var hasher = SHA256.Create();
var hashValue = hasher.ComputeHash(data);
var signingCertificate = _certificateRepository.GetPrimarySigningCertificate();
using var rsa = signingCertificate.GetRSAPrivateKey();
var rsaFormatter = new RSAPKCS1SignatureFormatter(rsa);
rsaFormatter.SetHashAlgorithm("SHA256");
return(Convert.ToBase64String(rsaFormatter.CreateSignature(hashValue)));
}
