/// <inheritdoc />
public TData?Unprotect(string?protectedText, string?purpose)
{
try
{
if (protectedText == null)
{
return(default(TData));
}
var protectedData = Base64UrlTextEncoder.Decode(protectedText);
if (protectedData == null)
{
return(default(TData));
}
var protector = _protector;
if (!string.IsNullOrEmpty(purpose))
{
protector = protector.CreateProtector(purpose);
}
var userData = protector.Unprotect(protectedData);
if (userData == null)
{
return(default(TData));
}
return(_serializer.Deserialize(userData));
}
catch
{
// TODO trace exception, but do not leak other information
return(default(TData));
}
}
private static string GetSubjectId(OAuthTokenResponse tokens)
{
var payloadString = tokens.AccessToken.Split('.')[1];
payloadString = Encoding.UTF8.GetString(Base64UrlTextEncoder.Decode(payloadString));
var payload = JsonDocument.Parse(payloadString);
return(payload.RootElement.GetString(EsiaConstants.SbjIdUrn));
}
public void DataOfVariousLengthRoundTripCorrectly()
{
for (int length = 0; length != 256; ++length)
{
var data = new byte[length];
for (int index = 0; index != length; ++index)
{
data[index] = (byte)(5 + length + (index * 23));
}
string text = Base64UrlTextEncoder.Encode(data);
byte[] result = Base64UrlTextEncoder.Decode(text);
for (int index = 0; index != length; ++index)
{
Assert.Equal(data[index], result[index]);
}
}
}
public AuthenticationTicket Unprotect(string protectedText, string purpose)
{
AuthenticationTicket tdata;
try
{
if (protectedText == null)
{
tdata = default(AuthenticationTicket);
}
else
{
byte[] array = Base64UrlTextEncoder.Decode(protectedText);
if (array == null)
{
tdata = default(AuthenticationTicket);
}
else
{
IDataProtector dataProtector = _protector;
if (!string.IsNullOrEmpty(purpose))
{
dataProtector = dataProtector.CreateProtector(purpose);
}
byte[] array2 = dataProtector.Unprotect(array);
if (array2 == null)
{
tdata = default(AuthenticationTicket);
}
else
{
tdata = _serializer.Deserialize(array2);
}
}
}
}
catch
{
tdata = default(AuthenticationTicket);
}
return(tdata);
}
