+
−/* LibTomCrypt, modular cryptographic library -- Tom St Denis
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− *
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− * LibTomCrypt is a library that provides various cryptographic
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− * algorithms in a highly modular and flexible manner.
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− *
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− * The library is free for all purposes without any express
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− * guarantee it works.
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− */
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−
+
−/**
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−   @file gcm_reset.c
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−   GCM implementation, reset a used state so it can accept IV data, by Tom St Denis
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−*/
+
−#include "tomcrypt.h"
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−
+
−#ifdef LTC_GCM_MODE
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−
+
−/**
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−  Reset a GCM state to as if you just called gcm_init().  This saves the initialization time.
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−  @param gcm   The GCM state to reset
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−  @return CRYPT_OK on success
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−*/
+
−int gcm_reset(gcm_state *gcm)
+
−{
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−   LTC_ARGCHK(gcm != NULL);
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−
+
−   zeromem(gcm->buf, sizeof(gcm->buf));
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−   zeromem(gcm->X,   sizeof(gcm->X));
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−   gcm->mode     = LTC_GCM_MODE_IV;
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−   gcm->ivmode   = 0;
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−   gcm->buflen   = 0;
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−   gcm->totlen   = 0;
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−   gcm->pttotlen = 0;
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−
+
−   return CRYPT_OK;
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−}
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−
+
−#endif
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−
+
−/* ref:         $Format:%D$ */
+
−/* git commit:  $Format:%H$ */
+
−/* commit time: $Format:%ai$ */