public static KrbAsReq CreateAsReq(KerberosCredential credential, AuthenticationOptions options)
{
var kdcOptions = (KdcOptions)(options & ~AuthenticationOptions.AllAuthentication);
var hostAddress = Environment.MachineName;
var pacRequest = new KrbPaPacRequest
{
IncludePac = options.HasFlag(AuthenticationOptions.IncludePacRequest)
};
var padata = new List <KrbPaData>()
{
new KrbPaData
{
Type = PaDataType.PA_PAC_REQUEST,
Value = pacRequest.Encode()
}
};
var asreq = new KrbAsReq()
{
MessageType = MessageType.KRB_AS_REQ,
Body = new KrbKdcReqBody
{
Addresses = new[] {
new KrbHostAddress {
AddressType = AddressType.NetBios,
Address = Encoding.ASCII.GetBytes(hostAddress.PadRight(16, ' '))
}
},
CName = KrbPrincipalName.FromString(
credential.UserName,
PrincipalNameType.NT_ENTERPRISE,
credential.Domain
),
EType = KerberosConstants.ETypes.ToArray(),
KdcOptions = kdcOptions,
Nonce = KerberosConstants.GetNonce(),
RTime = KerberosConstants.EndOfTime,
Realm = credential.Domain,
SName = new KrbPrincipalName
{
Type = PrincipalNameType.NT_SRV_INST,
Name = new[] { "krbtgt", credential.Domain }
},
Till = KerberosConstants.EndOfTime
},
PaData = padata.ToArray()
};
if (options.HasFlag(AuthenticationOptions.PreAuthenticate))
{
credential.TransformKdcReq(asreq);
}
return(asreq);
}
public static KrbAsReq CreateAsReq(KerberosCredential credential, AuthenticationOptions options)
{
if (credential == null)
{
throw new ArgumentNullException(nameof(credential));
}
var config = credential.Configuration ?? Krb5Config.Default();
var kdcOptions = (KdcOptions)(options & ~AuthenticationOptions.AllAuthentication);
var pacRequest = new KrbPaPacRequest
{
IncludePac = options.HasFlag(AuthenticationOptions.IncludePacRequest)
};
var padata = new List <KrbPaData>()
{
new KrbPaData
{
Type = PaDataType.PA_PAC_REQUEST,
Value = pacRequest.Encode()
}
};
var asreq = new KrbAsReq()
{
Body = new KrbKdcReqBody
{
Addresses = IncludeAddresses(config),
CName = ExtractCName(credential),
EType = GetPreferredETypes(config.Defaults.DefaultTicketEncTypes, config.Defaults.AllowWeakCrypto).ToArray(),
KdcOptions = kdcOptions,
Nonce = GetNonce(),
RTime = CalculateRenewTime(kdcOptions, config),
Realm = credential.Domain,
SName = new KrbPrincipalName
{
Type = PrincipalNameType.NT_SRV_INST,
Name = new[] { "krbtgt", credential.Domain }
},
Till = CalculateExpirationTime(config)
},
PaData = padata.ToArray()
};
if (options.HasFlag(AuthenticationOptions.PreAuthenticate))
{
credential.TransformKdcReq(asreq);
}
return(asreq);
}
public static KrbAsReq CreateAsReq(KerberosCredential credential, AuthenticationOptions options)
{
var kdcOptions = (KdcOptions)(options & ~AuthenticationOptions.AllAuthentication);
var hostAddress = Environment.MachineName;
var padata = new List <KrbPaData>()
{
new KrbPaData
{
Type = PaDataType.PA_PAC_REQUEST,
Value = new KrbPaPacRequest
{
IncludePac = options.HasFlag(AuthenticationOptions.IncludePacRequest)
}.Encode().AsMemory()
}
};
if (options.HasFlag(AuthenticationOptions.PreAuthenticate))
{
KerberosConstants.Now(out DateTimeOffset timestamp, out int usec);
var ts = new KrbPaEncTsEnc
{
PaTimestamp = timestamp,
PaUSec = usec
};
var tsEncoded = ts.Encode().AsMemory();
KrbEncryptedData encData = KrbEncryptedData.Encrypt(
tsEncoded,
credential.CreateKey(),
KeyUsage.PaEncTs
);
padata.Add(new KrbPaData
{
Type = PaDataType.PA_ENC_TIMESTAMP,
Value = encData.Encode().AsMemory()
});
}
var asreq = new KrbAsReq()
{
MessageType = MessageType.KRB_AS_REQ,
Body = new KrbKdcReqBody
{
Addresses = new[] {
new KrbHostAddress {
AddressType = AddressType.NetBios,
Address = Encoding.ASCII.GetBytes(hostAddress.PadRight(16, ' '))
}
},
CName = new KrbPrincipalName
{
Name = new[] { $"{credential.UserName}@{credential.Domain}" },
Type = PrincipalNameType.NT_ENTERPRISE
},
EType = KerberosConstants.ETypes.ToArray(),
KdcOptions = kdcOptions,
Nonce = KerberosConstants.GetNonce(),
RTime = KerberosConstants.EndOfTime,
Realm = credential.Domain,
SName = new KrbPrincipalName
{
Type = PrincipalNameType.NT_SRV_INST,
Name = new[] { "krbtgt", credential.Domain }
},
Till = KerberosConstants.EndOfTime
},
PaData = padata.ToArray()
};
return(asreq);
}
