+++ /dev/null
-/* 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"
-
-/**
- @file pmac_done.c
- PMAC implementation, terminate a session, by Tom St Denis
-*/
-
-#ifdef LTC_PMAC
-
-int pmac_done(pmac_state *state, unsigned char *out, unsigned long *outlen)
-{
- int err, x;
-
- LTC_ARGCHK(state != NULL);
- LTC_ARGCHK(out != NULL);
- if ((err = cipher_is_valid(state->cipher_idx)) != CRYPT_OK) {
- return err;
- }
-
- if ((state->buflen > (int)sizeof(state->block)) || (state->buflen < 0) ||
- (state->block_len > (int)sizeof(state->block)) || (state->buflen > state->block_len)) {
- return CRYPT_INVALID_ARG;
- }
-
-
- /* handle padding. If multiple xor in L/x */
-
- if (state->buflen == state->block_len) {
- /* xor Lr against the checksum */
- for (x = 0; x < state->block_len; x++) {
- state->checksum[x] ^= state->block[x] ^ state->Lr[x];
- }
- } else {
- /* otherwise xor message bytes then the 0x80 byte */
- for (x = 0; x < state->buflen; x++) {
- state->checksum[x] ^= state->block[x];
- }
- state->checksum[x] ^= 0x80;
- }
-
- /* encrypt it */
- if ((err = cipher_descriptor[state->cipher_idx].ecb_encrypt(state->checksum, state->checksum, &state->key)) != CRYPT_OK) {
- return err;
- }
- cipher_descriptor[state->cipher_idx].done(&state->key);
-
- /* store it */
- for (x = 0; x < state->block_len && x < (int)*outlen; x++) {
- out[x] = state->checksum[x];
- }
- *outlen = x;
-
-#ifdef LTC_CLEAN_STACK
- zeromem(state, sizeof(*state));
-#endif
- return CRYPT_OK;
-}
-
-#endif
-
-
-/* ref: $Format:%D$ */
-/* git commit: $Format:%H$ */
-/* commit time: $Format:%ai$ */