1 files changed, 89 insertions, 0 deletions
diff --git a/libtomcrypt/src/mac/pmac/pmac_memory_multi.c b/libtomcrypt/src/mac/pmac/pmac_memory_multi.c
new file mode 100644
index 0000000..2cc8572
--- /dev/null
+++ b/libtomcrypt/src/mac/pmac/pmac_memory_multi.c
@@ -0,0 +1,89 @@
+/* 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.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.org
+ */
+#include "tomcrypt.h"
+#include <stdarg.h>
+
+/** 
+   @file pmac_memory_multi.c
+   PMAC implementation, process multiple blocks of memory, by Tom St Denis 
+*/
+
+#ifdef PMAC
+
+/**
+   PMAC multiple blocks of memory
+   @param cipher   The index of the cipher desired
+   @param key      The secret key
+   @param keylen   The length of the secret key (octets)
+   @param out      [out] Destination for the authentication tag
+   @param outlen   [in/out] The max size and resulting size of the authentication tag
+   @param in       The data you wish to send through PMAC
+   @param inlen    The length of data you wish to send through PMAC (octets)
+   @param ...      tuples of (data,len) pairs to PMAC, terminated with a (NULL,x) (x=don't care)
+   @return CRYPT_OK if successful
+*/
+int pmac_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;
+   pmac_state          *pmac;
+   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 pmac state */
+   pmac = XMALLOC(sizeof(pmac_state));
+   if (pmac == NULL) {
+      return CRYPT_MEM;
+   }
+   
+   if ((err = pmac_init(pmac, cipher, key, keylen)) != CRYPT_OK) {
+      goto LBL_ERR;
+   }
+   va_start(args, inlen);
+   curptr = in; 
+   curlen = inlen;
+   for (;;) {
+      /* process buf */
+      if ((err = pmac_process(pmac, 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 = pmac_done(pmac, out, outlen)) != CRYPT_OK) {
+      goto LBL_ERR;
+   }
+LBL_ERR:
+#ifdef LTC_CLEAN_STACK
+   zeromem(pmac, sizeof(pmac_state));
+#endif
+   XFREE(pmac);
+   va_end(args);
+   return err;   
+}
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_memory_multi.c,v $ */
+/* $Revision: 1.4 $ */
+/* $Date: 2005/05/05 14:35:59 $ */