<PackageReference Include="System.Security.Cryptography.Pkcs" Version="10.0.9" />

System.Security.Cryptography.Xml.X509IssuerSerial

public struct X509IssuerSerial
Represents the <X509IssuerSerial> element of an XML digital signature.
public string IssuerName { get; set; }

Gets or sets an X.509 certificate issuer's distinguished name.

public string SerialNumber { get; set; }

Gets or sets an X.509 certificate issuer's serial number.