public static AsyncCertificateRequest Parse(ProtocolVersion version, IByteBuffer data)
{
int numTypes = data.ReadByte() & 0x0FF;
byte[] certificateTypes = new byte[numTypes];
for (int i = 0; i < numTypes; ++i)
{
certificateTypes[i] = data.ReadByte();
}
IList supportedSignatureAlgorithms = null;
if (ProtocolVersion.TLSv12.IsEqualOrEarlierVersionOf(version.GetEquivalentTLSVersion()))
{
supportedSignatureAlgorithms = DtlsHelper.ParseSupportedSignatureAlgorithms(false, data);
}
IList certificateAuthorities = new List <X509Name>();
int remainingBytes = data.ReadUnsignedShort();
while (remainingBytes > 0)
{
byte[] derEncoding = new byte[data.ReadUnsignedShort()];
data.ReadBytes(derEncoding);
Asn1InputStream asn1 = new Asn1InputStream(derEncoding);
Asn1Object result = asn1.ReadObject();
asn1.Close();
if (null == result)
{
throw new TlsFatalAlert(AlertDescription.decode_error);
}
if (null != asn1.ReadObject())
{
throw new TlsFatalAlert(AlertDescription.decode_error);
}
certificateAuthorities.Add(X509Name.GetInstance(result));
remainingBytes -= 2 + derEncoding.Length;
}
return(new AsyncCertificateRequest(certificateTypes, supportedSignatureAlgorithms, certificateAuthorities));
}