commit files needed for zpm-fetchurl

[zpackage] / libtomcrypt / src / encauth / ccm / ccm_reset.c

diff --git a/libtomcrypt/src/encauth/ccm/ccm_reset.c b/libtomcrypt/src/encauth/ccm/ccm_reset.c
new file mode 100644 (file)
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+++ b/libtomcrypt/src/encauth/ccm/ccm_reset.c
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+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+#include "tomcrypt.h"
+
+#ifdef LTC_CCM_MODE
+
+/**
+  Reset a CCM state to as if you just called ccm_init().  This saves the initialization time.
+  @param ccm   The CCM state to reset
+  @return CRYPT_OK on success
+*/
+int ccm_reset(ccm_state *ccm)
+{
+   LTC_ARGCHK(ccm != NULL);
+   zeromem(ccm->PAD, sizeof(ccm->PAD));
+   zeromem(ccm->ctr, sizeof(ccm->ctr));
+   zeromem(ccm->CTRPAD, sizeof(ccm->CTRPAD));
+   ccm->CTRlen = 0;
+   ccm->current_ptlen = 0;
+   ccm->current_aadlen = 0;
+
+   return CRYPT_OK;
+}
+
+#endif
+
+/* ref:         $Format:%D$ */
+/* git commit:  $Format:%H$ */
+/* commit time: $Format:%ai$ */