/* -*-c-*-
*
- * $Id: rijndael.h,v 1.1 2000/06/17 11:56:07 mdw Exp $
+ * $Id: rijndael.h,v 1.4 2004/04/08 01:36:15 mdw Exp $
*
* The Rijndael block cipher
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: rijndael.h,v $
- * Revision 1.1 2000/06/17 11:56:07 mdw
- * New cipher.
- *
- */
-
/*----- Notes on the Rijndael block cipher --------------------------------*
*
- * Invented by Joan Daemen and Vincent Rijmen, Rijndael is a fast and
- * relatively simple 128-bit block cipher proposed by the designers as an AES
- * candidate. At the time of writing, the AES winner hasn't been decided.
- * Rijnadel is fast, but has a low security margin. I recommend waiting
+ * Invented by Joan Daemen and Vincent Rijmen, Rijndael is a fast, elegant
+ * and relatively simple 128-bit block cipher. It was chosen by NIST to be
+ * the new Advanced Encryption Standard (AES) algorithm.
+ *
+ * Rijnadel appears to have a low security margin. I recommend waiting
* before using Rijndael for any sensitive applications.
*/
/*----- Data structures ---------------------------------------------------*/
-#define RIJNDAEL_MAXROUNDS 32
-#define RIJNDAEL_KWORDS ((RIJNDAEL_MAXROUNDS + 1) * (RIJNDAEL_BLKSZ / 4))
+#define RIJNDAEL_MAXROUNDS 16
+#define RIJNDAEL_KWORDS ((RIJNDAEL_MAXROUNDS + 1) * 8)
typedef struct rijndael_ctx {
unsigned nr;
/*----- Functions provided ------------------------------------------------*/
+/* --- @rijndael_setup@ --- *
+ *
+ * Arguments: @rijndael_ctx *k@ = pointer to context to initialize
+ * @unsigned nb@ = number of words in the block
+ * @const void *buf@ = pointer to buffer of key material
+ * @size_t sz@ = size of the key material
+ *
+ * Returns: ---
+ *
+ * Use: Low-level key-scheduling. Don't call this directly.
+ */
+
+extern void rijndael_setup(rijndael_ctx */*k*/, unsigned /*nb*/,
+ const void */*buf*/, size_t /*sz*/);
+
/* --- @rijndael_init@ --- *
*
* Arguments: @rijndael_ctx *k@ = pointer to context to initialize