- jakob@cvs.openbsd.org 2001/08/02 16:14:05

[openssh.git] / rijndael.h

diff --git a/rijndael.h b/rijndael.h
index 75853cfff2c53e4d27f46ddd04ed4f0fcc3874f1..db33805eca52775e042cca2829ee8219ef40e942 100644 (file)
--- a/rijndael.h
+++ b/rijndael.h
@@ -1,27 +1,63 @@
+/*     $OpenBSD: rijndael.h,v 1.9 2001/07/30 16:23:30 stevesk Exp $    */
+
+/* This is an independent implementation of the encryption algorithm:   */
+/*                                                                      */
+/*         RIJNDAEL by Joan Daemen and Vincent Rijmen                   */
+/*                                                                      */
+/* which is a candidate algorithm in the Advanced Encryption Standard   */
+/* programme of the US National Institute of Standards and Technology.  */
+
 /*
- * rijndael-alg-fst.h   v2.4   April '2000
- * rijndael-api-fst.h   v2.4   April '2000
- *
- * Optimised ANSI C code
- *
- */
+   -----------------------------------------------------------------------
+   Copyright (c) 2001 Dr Brian Gladman <brg@gladman.uk.net>, Worcester, UK
+   
+   TERMS
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+   2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+   This software is provided 'as is' with no guarantees of correctness or
+   fitness for purpose.
+   -----------------------------------------------------------------------
+*/
+
+#ifndef _RIJNDAEL_H_
+#define _RIJNDAEL_H_
+
+#include "config.h"
+
+/* 1. Standard types for AES cryptography source code               */
+
+typedef u_int8_t   u1byte; /* an 8 bit unsigned character type */
+typedef u_int16_t  u2byte; /* a 16 bit unsigned integer type   */
+typedef u_int32_t  u4byte; /* a 32 bit unsigned integer type   */
+
+typedef int8_t     s1byte; /* an 8 bit signed character type   */
+typedef int16_t    s2byte; /* a 16 bit signed integer type     */
+typedef int32_t    s4byte; /* a 32 bit signed integer type     */
 
-#ifndef RIJNDAEL_H
-#define RIJNDAEL_H
+typedef struct _rijndael_ctx {
+       u4byte  k_len;
+       int decrypt;
+       u4byte  e_key[64];
+       u4byte  d_key[64];
+} rijndael_ctx;
 
-#define RIJNDAEL_MAXKC         (256/32)
-#define RIJNDAEL_MAXROUNDS     14
 
-#define        RIJNDAEL_ENCRYPT        0
-#define        RIJNDAEL_DECRYPT        1
+/* 2. Standard interface for AES cryptographic routines             */
 
-typedef struct {
-       int ROUNDS;             /* key-length-dependent number of rounds */
-       u_int8_t keySched[RIJNDAEL_MAXROUNDS+1][4][4];
-} rijndael_key;
+/* These are all based on 32 bit unsigned values and will therefore */
+/* require endian conversions for big-endian architectures          */
 
-int rijndael_encrypt(rijndael_key *key, u_int8_t a[16], u_int8_t b[16]);
-int rijndael_decrypt(rijndael_key *key, u_int8_t a[16], u_int8_t b[16]);
-int rijndael_makekey(rijndael_key *key, int direction, int keyLen, u_int8_t *keyMaterial);
+rijndael_ctx *
+rijndael_set_key __P((rijndael_ctx *, const u4byte *, const u4byte, int));
+void rijndael_encrypt __P((rijndael_ctx *, const u4byte *, u4byte *));
+void rijndael_decrypt __P((rijndael_ctx *, const u4byte *, u4byte *));
 
-#endif
+#endif /* _RIJNDAEL_H_ */