adcf073484
Add a context structure for the algorithm and keys established by NTS-KE. Modify the client to save the context and reset the SIV key to the C2S/S2C key before each request/response instead of keeping two SIV instances. This will make it easier for the server to support different algorithms and allow the client to save the context with cookies to disk.
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Miroslav Lichvar 2020
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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Header file for the NTS-KE client
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*/
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#ifndef GOT_NTS_KE_CLIENT_H
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#define GOT_NTS_KE_CLIENT_H
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#include "addressing.h"
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#include "nts_ke.h"
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typedef struct NKC_Instance_Record *NKC_Instance;
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/* Init and fini functions */
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extern void NKC_Initialise(void);
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extern void NKC_Finalise(void);
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/* Create a client NTS-KE instance */
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extern NKC_Instance NKC_CreateInstance(IPSockAddr *address, const char *name);
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/* Destroy an instance */
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extern void NKC_DestroyInstance(NKC_Instance inst);
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/* Connect to the server, start an NTS-KE session, send an NTS-KE request, and
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process the response (asynchronously) */
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extern int NKC_Start(NKC_Instance inst);
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/* Check if the client is still running */
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extern int NKC_IsActive(NKC_Instance inst);
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/* Get the NTS data if the session was successful */
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extern int NKC_GetNtsData(NKC_Instance inst, NKE_Context *context,
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NKE_Cookie *cookies, int *num_cookies, int max_cookies,
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IPSockAddr *ntp_address);
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/* Get a factor to calculate retry interval (in log2 seconds) */
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extern int NKC_GetRetryFactor(NKC_Instance inst);
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#endif
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