+++ /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"
-#include <stdarg.h>
-
-/**
- @file omac_memory_multi.c
- OMAC1 support, process multiple blocks of memory, Tom St Denis
-*/
-
-#ifdef LTC_OMAC
-
-/**
- OMAC multiple blocks of memory
- @param cipher The index of the desired cipher
- @param key The secret key
- @param keylen The length of the secret key (octets)
- @param out [out] The destination of the authentication tag
- @param outlen [in/out] The max size and resulting size of the authentication tag (octets)
- @param in The data to send through OMAC
- @param inlen The length of the data to send through OMAC (octets)
- @param ... tuples of (data,len) pairs to OMAC, terminated with a (NULL,x) (x=don't care)
- @return CRYPT_OK if successful
-*/
-int omac_memory_multi(int cipher,
- const unsigned char *key, unsigned long keylen,
- unsigned char *out, unsigned long *outlen,
- const unsigned char *in, unsigned long inlen, ...)
-{
- int err;
- omac_state *omac;
- va_list args;
- const unsigned char *curptr;
- unsigned long curlen;
-
- LTC_ARGCHK(key != NULL);
- LTC_ARGCHK(in != NULL);
- LTC_ARGCHK(out != NULL);
- LTC_ARGCHK(outlen != NULL);
-
- /* allocate ram for omac state */
- omac = XMALLOC(sizeof(omac_state));
- if (omac == NULL) {
- return CRYPT_MEM;
- }
-
- /* omac process the message */
- if ((err = omac_init(omac, cipher, key, keylen)) != CRYPT_OK) {
- goto LBL_ERR;
- }
- va_start(args, inlen);
- curptr = in;
- curlen = inlen;
- for (;;) {
- /* process buf */
- if ((err = omac_process(omac, curptr, curlen)) != CRYPT_OK) {
- goto LBL_ERR;
- }
- /* step to next */
- curptr = va_arg(args, const unsigned char*);
- if (curptr == NULL) {
- break;
- }
- curlen = va_arg(args, unsigned long);
- }
- if ((err = omac_done(omac, out, outlen)) != CRYPT_OK) {
- goto LBL_ERR;
- }
-LBL_ERR:
-#ifdef LTC_CLEAN_STACK
- zeromem(omac, sizeof(omac_state));
-#endif
- XFREE(omac);
- va_end(args);
- return err;
-}
-
-#endif
-
-/* ref: $Format:%D$ */
-/* git commit: $Format:%H$ */
-/* commit time: $Format:%ai$ */