/// <summary>
/// Gets a URL that conforms to the de-facto standard
/// created and used by Google
/// </summary>
private static string GetBaseKeyUrl(byte[] key, string user, OtpType otpType, int size)
{
if (string.IsNullOrEmpty(user))
{
throw new ArgumentNullException(nameof(user));
}
if (key == null || key.Length == 0)
{
throw new ArgumentNullException(nameof(key));
}
if (size != 6 && size != 8)
{
throw new ArgumentException("size must be 6 or 8");
}
var url =
$"otpauth://{otpType.ToString().ToLowerInvariant()}/{HttpUtility.UrlEncode(user)}?{UrlConstants.SecretParameter}={Base32Encoder.Encode(key)}";
if (size == 8)
{
url += CreateParameter(UrlConstants.DigitsParameter, size);
}
return(url);
}
/// <summary>
/// Gets a URL that conforms to the de-facto standard
/// created and used by Google
/// </summary>
private static string GetBaseKeyUrl(byte[] key, string user, OtpType otpType, int size)
{
if (string.IsNullOrEmpty(user))
{
throw new ArgumentNullException("user");
}
if (key == null || key.Length == 0)
{
throw new ArgumentNullException("key");
}
if (size != 6 && size != 8)
{
throw new ArgumentException("size must be 6 or 8");
}
var url = string.Format("otpauth://{0}/{1}?{2}={3}", otpType.ToString().ToLowerInvariant(), WebUtility.UrlEncode(user), UrlConstants.SecretParameter, Base32Encoding.Standard.GetString(key));
if (size == 8)
{
url += CreateParameter(UrlConstants.DigitsParameter, size);
}
return(url);
}
public static string GetUri(OtpType type, byte[] key, string accountName, string issuer = "", OtpAlgorithm algorithm = OtpAlgorithm.SHA1,
int codeLength = 6, long counter = 0, int period = 30)
{
StringBuilder SB = new StringBuilder();
SB.AppendFormat("otpauth://{0}/", type.ToString().ToLower());
if (!string.IsNullOrEmpty(issuer))
{
SB.AppendFormat("{0}:{1}?issuer={0}&", Uri.EscapeUriString(issuer), Uri.EscapeUriString(accountName));
}
else
{
SB.AppendFormat("{0}?", Uri.EscapeUriString(accountName));
}
SB.AppendFormat("secret={0}&algorithm={1}&digits={2}&", Base32.Encode(key), algorithm, codeLength);
if (type == OtpType.HOTP)
{
SB.AppendFormat("counter={0}", counter);
}
else
{
SB.AppendFormat("period={0}", period);
}
return(SB.ToString());
}
/// <summary>
/// Gets a URL that conforms to the de-facto standard
/// created and used by Google
/// </summary>
private static string GetBaseKeyUrl(byte[] key, string user, OtpType otpType, int size)
{
if (string.IsNullOrEmpty(user))
throw new ArgumentNullException("user");
if (key == null || key.Length == 0)
throw new ArgumentNullException("key");
if (size != 6 && size != 8)
throw new ArgumentException("size must be 6 or 8");
var url = string.Format("otpauth://{0}/{1}?{2}={3}", otpType.ToString().ToLowerInvariant(), System.Web.HttpUtility.UrlEncode(user), UrlConstants.SecretParameter, Base32Encoder.Encode(key));
if (size == 8)
url += CreateParameter(UrlConstants.DigitsParameter, size);
return url;
}