/// <summary>
/// Generates a QR code bitmap for provisioning.
/// </summary>
public byte[] GenerateProvisioningImage(string identifier, byte[] key, int width, int height)
{
var KeyString = Encoder.Base32Encode(key);
var ProvisionUrl = Encoder.UrlEncode(string.Format("otpauth://totp/{0}?secret={1}", identifier, KeyString));
var ChartUrl = string.Format("https://chart.googleapis.com/chart?cht=qr&chs={0}x{1}&chl={2}", width, height, ProvisionUrl);
using (var Client = new WebClient())
{
return(Client.DownloadData(ChartUrl));
}
}
/// <summary>
/// Generates a QR code bitmap for provisioning.
/// </summary>
public static string GetGQCodeImageLink(string username, byte[] key, int width, int height)
{
var keyString = Encoder.Base32Encode(key);
var provisionUrl = Encoder.UrlEncode($"otpauth://totp/{username}?secret={keyString}&issuer={Globals.SERVER_NAME}");
var chartUrl = $"https://chart.apis.google.com/chart?cht=qr&chs={width}x{height}&chl={provisionUrl}";
return(chartUrl);
/*using (var client = new WebClient())
* {
* return client.DownloadData(chartUrl);
* }*/
}
/// <summary>
/// Encodes the key as a string
/// </summary>
public string EncodeKey(byte[] keyData)
{
return(Encoder.Base32Encode(keyData));
}
