diff options
Diffstat (limited to 'libtomcrypt/src/encauth/ccm/ccm_reset.c')
-rw-r--r-- | libtomcrypt/src/encauth/ccm/ccm_reset.c | 35 |
1 files changed, 35 insertions, 0 deletions
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: $Format:%ai$ */ |