How to involve Signer’s certificate issuer name,serial number & Date/time stamp while signing a data in c#?

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C#

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How to involve Signer’s certificate issuer name,serial number & Date/time stamp while signing a data in c#?

I am doing digital signature via Rebex dll.
My code is as follows:

// get a certificate with a private key
var certificate = Certificate.LoadPfx("mycert.pfx", "password");

// load the content of a file we need to sign
byte[] content = File.ReadAllBytes("document.pdf");
var contentInfo = new ContentInfo(content);

// create a PKCS #7 SignedData object based on this,
// the second argument specifies "detached" style
var signedData = new SignedData(contentInfo, true);

// add one ore more signers
var signer = new SignerInfo(certificate);
signedData.SignerInfos.Add(signer);

// create the signature
signedData.Sign();

// save the signature into a detached signature file
using (var output = File.Create("document.pdf.p7s"))
{
    signedData.Save(output);
}