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SimpleProtectedNegotiationTokenResponse: Bugfix: GetBytes threw exception when MechanismListMIC was not null

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TalAloni 2021-01-23 13:56:50 +02:00
parent b3f0c3dfd0
commit 2b5be7b291
1 changed files with 9 additions and 1 deletions
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10
SMBLibrary/Authentication/GSSAPI/SPNEGO/SimpleProtectedNegotiationTokenResponse.cs
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@ -1,4 +1,4 @@
/* Copyright (C) 2017 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
/* Copyright (C) 2017-2020 Tal Aloni <tal.aloni.il@gmail.com>. All rights reserved.
*
* You can redistribute this program and/or modify it under the terms of
* the GNU Lesser Public License as published by the Free Software Foundation,
@ -133,6 +133,14 @@ namespace SMBLibrary.Authentication.GSSAPI
int responseTokenLength = 1 + responseTokenConstructionLengthFieldSize + 1 + responseTokenBytesLengthFieldSize + ResponseToken.Length;
result += responseTokenLength;
}
if (MechanismListMIC != null)
{
int mechanismListMICBytesLengthFieldSize = DerEncodingHelper.GetLengthFieldSize(MechanismListMIC.Length);
int mechanismListMICConstructionLength = 1 + mechanismListMICBytesLengthFieldSize + MechanismListMIC.Length;
int mechanismListMICConstructionLengthFieldSize = DerEncodingHelper.GetLengthFieldSize(mechanismListMICConstructionLength);
int responseTokenLength = 1 + mechanismListMICConstructionLengthFieldSize + 1 + mechanismListMICBytesLengthFieldSize + MechanismListMIC.Length;
result += responseTokenLength;
}
return result;
}