X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;ds=sidebyside;f=libtomcrypt%2Fsrc%2Fencauth%2Fccm%2Fccm_reset.c;fp=libtomcrypt%2Fsrc%2Fencauth%2Fccm%2Fccm_reset.c;h=c2d0cae87434b03b62f1a389649a501f3759c3ee;hb=66bc25938679f1d6a1d1200f329093d82a5e99b4;hp=0000000000000000000000000000000000000000;hpb=a52ee0733f420ca20224049260d6fc5cf7d8f621;p=zpackage

diff --git a/libtomcrypt/src/encauth/ccm/ccm_reset.c b/libtomcrypt/src/encauth/ccm/ccm_reset.c
new file mode 100644
index 0000000..c2d0cae
--- /dev/null
+++ b/libtomcrypt/src/encauth/ccm/ccm_reset.c
@@ -0,0 +1,35 @@
+/* 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: $Format:%ai$ */