internal static bool TryParse(KERB_EXTERNAL_TICKET ticket, out KerberosExternalTicket result)
{
result = null;
try {
var ret = new KerberosExternalTicket();
ret.ServiceName = ParseName(ticket.ServiceName);
ret.TargetName = ParseName(ticket.TargetName);
ret.ClientName = ParseName(ticket.ClientName);
ret.DomainName = ticket.DomainName.ToString();
ret.TargetDomainName = ticket.TargetDomainName.ToString();
ret.AltTargetDomainName = ticket.AltTargetDomainName.ToString();
ret.SessionKey = ParseKey(ret.ServiceName, ret.DomainName, ticket.SessionKey);
ret.TicketFlags = (KerberosTicketFlags)ticket.TicketFlags.SwapEndian();
ret.Flags = ticket.Flags;
ret.KeyExpirationTime = ticket.KeyExpirationTime.ToDateTime();
ret.StartTime = ticket.StartTime.ToDateTime();
ret.EndTime = ticket.EndTime.ToDateTime();
ret.RenewUntil = ticket.RenewUntil.ToDateTime();
ret.TimeSkew = new TimeSpan(ticket.TimeSkew.QuadPart);
byte[] ticket_data = ticket.ReadTicket();
DERValue[] values = DERParser.ParseData(ticket_data, 0);
if (values.Length != 1)
{
return(false);
}
ret.Ticket = KerberosTicket.Parse(values[0], ticket_data);
result = ret;
return(true);
} catch (InvalidDataException) {
return(false);
}
}
/// <summary>
/// Try and parse data into an ASN1 authentication token.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <param name="token">The Negotiate authentication token.</param>
/// <param name="values">Parsed DER Values.</param>
internal static bool TryParse(byte[] data, DERValue[] values, out KerberosAuthenticationToken token)
{
token = null;
try
{
var ret = new KerberosTGTResponseAuthenticationToken(data, values);
if (values.Length != 1 || !values[0].HasChildren())
{
return(false);
}
Queue <DERValue> queue = new Queue <DERValue>(values[0].Children);
while (queue.Count > 0)
{
var next = queue.Dequeue();
if (next.Type != DERTagType.ContextSpecific)
{
return(false);
}
switch (next.Tag)
{
case 0:
if (next.ReadChildInteger() != 5)
{
return(false);
}
break;
case 1:
if ((KRB_MSG_TYPE)next.ReadChildInteger() != KRB_MSG_TYPE.KRB_TGT_REP)
{
return(false);
}
break;
case 2:
if (!next.HasChildren())
{
return(false);
}
ret.Ticket = KerberosTicket.Parse(next.Children[0]);
break;
default:
return(false);
}
}
token = ret;
return(true);
}
catch (InvalidDataException)
{
return(false);
}
}
/// <summary>
/// Try and parse data into an ASN1 authentication token.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <param name="token">The Negotiate authentication token.</param>
/// <param name="values">Parsed DER Values.</param>
internal static bool TryParse(byte[] data, DERValue[] values, out KerberosAuthenticationToken token)
{
token = null;
try
{
var ret = new KerberosTGTReplyAuthenticationToken(data, values);
if (values.Length != 1 || !values[0].HasChildren())
{
return(false);
}
foreach (var next in values[0].Children)
{
if (next.Type != DERTagType.ContextSpecific)
{
return(false);
}
switch (next.Tag)
{
case 0:
if (next.ReadChildInteger() != 5)
{
return(false);
}
break;
case 1:
if ((KerberosMessageType)next.ReadChildInteger() != KerberosMessageType.KRB_TGT_REP)
{
return(false);
}
break;
case 2:
if (!next.HasChildren())
{
return(false);
}
ret.Ticket = KerberosTicket.Parse(next.Children[0]);
break;
default:
return(false);
}
}
token = ret;
return(true);
}
catch (InvalidDataException)
{
return(false);
}
}
/// <summary>
/// Try and parse data into an ASN1 authentication token.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <param name="token">The Negotiate authentication token.</param>
/// <param name="values">Parsed DER Values.</param>
internal static bool TryParse(byte[] data, DERValue[] values, out KerberosAuthenticationToken token)
{
token = null;
try
{
var ret = new KerberosAPRequestAuthenticationToken(data, values);
if (values.Length != 1 || !values[0].CheckApplication(14) || !values[0].HasChildren())
{
return(false);
}
values = values[0].Children;
if (values.Length != 1 || !values[0].CheckSequence() || !values[0].HasChildren())
{
return(false);
}
Queue <DERValue> queue = new Queue <DERValue>(values[0].Children);
while (queue.Count > 0)
{
var next = queue.Dequeue();
if (next.Type != DERTagType.ContextSpecific)
{
return(false);
}
switch (next.Tag)
{
case 0:
if (next.ReadChildInteger() != 5)
{
return(false);
}
break;
case 1:
if ((KRB_MSG_TYPE)next.ReadChildInteger() != KRB_MSG_TYPE.KRB_AP_REQ)
{
return(false);
}
break;
case 2:
if (!next.Children[0].CheckPrimitive(UniversalTag.BIT_STRING))
{
return(false);
}
var bits = next.Children[0].ReadBitString();
var options = KerberosAPRequestOptions.None;
if (bits[1])
{
options |= KerberosAPRequestOptions.UseSessionKey;
}
if (bits[2])
{
options |= KerberosAPRequestOptions.MutualAuthRequired;
}
ret.Options = options;
break;
case 3:
if (!next.HasChildren())
{
return(false);
}
ret.Ticket = KerberosTicket.Parse(next.Children[0]);
break;
case 4:
if (!next.HasChildren())
{
return(false);
}
ret.Authenticator = KerberosEncryptedData.Parse(next.Children[0]);
break;
default:
return(false);
}
}
token = ret;
return(true);
}
catch (InvalidDataException)
{
return(false);
}
}