--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/mac/f9/f9_memory_multi.c	Thu Jan 11 02:22:00 2007 +0000
@@ -0,0 +1,90 @@
+/* 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, [email protected], http://libtomcrypt.com
+ */
+#include "tomcrypt.h"
+#include <stdarg.h>
+
+/** 
+  @file f9_memory_multi.c
+  f9 support, process multiple blocks of memory, Tom St Denis
+*/
+
+#ifdef LTC_F9_MODE
+
+/**
+   f9 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 f9
+   @param inlen     The length of the data to send through f9 (octets)
+   @param ...       tuples of (data,len) pairs to f9, terminated with a (NULL,x) (x=don't care)
+   @return CRYPT_OK if successful
+*/
+int f9_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;
+   f9_state          *f9;
+   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 f9 state */
+   f9 = XMALLOC(sizeof(f9_state));
+   if (f9 == NULL) {
+      return CRYPT_MEM;
+   }
+
+   /* f9 process the message */
+   if ((err = f9_init(f9, cipher, key, keylen)) != CRYPT_OK) {
+      goto LBL_ERR;
+   }
+   va_start(args, inlen);
+   curptr = in; 
+   curlen = inlen;
+   for (;;) {
+      /* process buf */
+      if ((err = f9_process(f9, 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 = f9_done(f9, out, outlen)) != CRYPT_OK) {
+      goto LBL_ERR;
+   }
+LBL_ERR:
+#ifdef LTC_CLEAN_STACK
+   zeromem(f9, sizeof(f9_state));
+#endif
+   XFREE(f9);
+   va_end(args);
+   return err;   
+}
+
+#endif
+
+/* $Source: /cvs/libtom/libtomcrypt/src/mac/f9/f9_memory_multi.c,v $ */
+/* $Revision: 1.2 $ */
+/* $Date: 2006/11/08 21:50:13 $ */