CloudFront Signed URL Generation

FileUploadService.cs

private string GetPrivateUrl(string file)
{
    try
    {
        return
            AmazonCloudFrontUrlSigner.GetCannedSignedURL(
                "https://" + CloudFrontDomain + "/" +  file,
                new StreamReader(@"PrivateKey.pem"),
                CloudFrontKeyId,
                DateTime.Now.AddDays(7)
            );
    }
    catch (Exception)
    {
        throw;
    }
}