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); } }