How to extract certificates from a time-stamp response in Bouncy Castle

Question

Using Bouncy Castle and C#, I am requesting a timestamp token with the certificates included (timestampRequestGenerator.SetCertReq(true)) and I get a response significantly bigger than when setting SetCertReq to false, so I assume that the response has somewhere the public key certificates used to generate the timestamp.

How can I access those certificates using Bouncy Castle? I have explored the response object in Visual Studio but did not find where the certificates are.

Stream inputFile = File.OpenRead("response-with-certs.tsr");
TimeStampResponse response = new TimeStampResponse(inputFile);
inputFile.Close();

Answer 1

As mentioned in the comments, you should be able to retrieve the certificate collection like so:

response.TimeStampToken.GetCertificates("Collection");