public static SoftwarePublisherCertificate CreateFromFile(
string filename)
{
if (filename == null)
{
throw new ArgumentNullException(nameof(filename));
}
byte[] numArray = (byte[])null;
using (FileStream fileStream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.Read))
{
numArray = new byte[fileStream.Length];
fileStream.Read(numArray, 0, numArray.Length);
fileStream.Close();
}
if (numArray.Length < 2)
{
return((SoftwarePublisherCertificate)null);
}
if (numArray[0] != (byte)48)
{
try
{
numArray = SoftwarePublisherCertificate.PEM(numArray);
}
catch (Exception ex)
{
throw new CryptographicException("Invalid encoding", ex);
}
}
return(new SoftwarePublisherCertificate(numArray));
}
