public static string UsingWebEncoders(string input)
{
byte[] inputBytes = null;
char[] outputChars = null;
try
{
var minimumLength = Encoding.UTF8.GetByteCount(input);
inputBytes = ArrayPool <byte> .Shared.Rent(minimumLength);
int inputBytesCount = Encoding.UTF8.GetBytes(input, 0, input.Length, inputBytes, 0);
var outputSize = WebEncoders.GetArraySizeRequiredToEncode(inputBytesCount);
outputChars = ArrayPool <char> .Shared.Rent(outputSize);
var charsSize = WebEncoders.Base64UrlEncode(inputBytes, 0, outputChars, 0, inputBytesCount);
return(new string(outputChars, 0, charsSize));
}
finally
{
if (inputBytes != null)
{
ArrayPool <byte> .Shared.Return(inputBytes);
}
if (outputChars != null)
{
ArrayPool <char> .Shared.Return(outputChars);
}
}
}
public string Serialize(AntiforgeryToken token)
{
if (token == null)
{
throw new ArgumentNullException(nameof(token));
}
var serializationContext = _pool.Get();
try
{
var writer = serializationContext.Writer;
writer.Write(TokenVersion);
writer.Write(token.SecurityToken !.GetData());
writer.Write(token.IsCookieToken);
if (!token.IsCookieToken)
{
if (token.ClaimUid != null)
{
writer.Write(true /* isClaimsBased */);
writer.Write(token.ClaimUid.GetData());
}
else
{
writer.Write(false /* isClaimsBased */);
writer.Write(token.Username !);
}
writer.Write(token.AdditionalData);
}
writer.Flush();
var stream = serializationContext.Stream;
var bytes = _cryptoSystem.Protect(stream.ToArray());
var count = bytes.Length;
var charsRequired = WebEncoders.GetArraySizeRequiredToEncode(count);
var chars = serializationContext.GetChars(charsRequired);
var outputLength = WebEncoders.Base64UrlEncode(
bytes,
offset: 0,
output: chars,
outputOffset: 0,
count: count);
return(new string(chars, startIndex : 0, length : outputLength));
}
finally
{
_pool.Return(serializationContext);
}
}
