public TData Unprotect(string protectedText)
{
try
{
if (protectedText == null)
{
return(default(TData));
}
byte[] protectedData = Base64UrlTextEncoder.Decode(protectedText);
if (protectedData == null)
{
return(default(TData));
}
byte[] userData = _protector.Unprotect(protectedData);
if (userData == null)
{
return(default(TData));
}
TData model = _serializer.Deserialize(userData);
return(model);
}
catch
{
// TODO trace exception, but do not leak other information
return(default(TData));
}
}
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));
}
}
public string Protect(TData data)
{
byte[] userData = _serializer.Serialize(data);
byte[] protectedData = _protector.Protect(userData);
string protectedText = Base64UrlTextEncoder.Encode(protectedData);
return(protectedText);
}
public string Protect(TData data, string purpose)
{
var userData = _serializer.Serialize(data);
var protector = _protector;
if (!string.IsNullOrEmpty(purpose))
{
protector = protector.CreateProtector(purpose);
}
var protectedData = protector.Protect(userData);
return(Base64UrlTextEncoder.Encode(protectedData));
}
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 void DataOfVariousLengthRoundTripCorrectly()
{
var encoder = new Base64UrlTextEncoder();
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 = encoder.Encode(data);
byte[] result = encoder.Decode(text);
for (int index = 0; index != length; ++index)
{
result[index].ShouldBe(data[index]);
}
}
}
