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-rw-r--r--rijndael.h48
1 files changed, 27 insertions, 21 deletions
diff --git a/rijndael.h b/rijndael.h
index 75853cff..09c42574 100644
--- a/rijndael.h
+++ b/rijndael.h
@@ -1,27 +1,33 @@
-/*
- * rijndael-alg-fst.h v2.4 April '2000
- * rijndael-api-fst.h v2.4 April '2000
- *
- * Optimised ANSI C code
- *
- */
+#ifndef _RIJNDAEL_H_
+#define _RIJNDAEL_H_
-#ifndef RIJNDAEL_H
-#define RIJNDAEL_H
+#include "config.h"
-#define RIJNDAEL_MAXKC (256/32)
-#define RIJNDAEL_MAXROUNDS 14
+/* 1. Standard types for AES cryptography source code */
-#define RIJNDAEL_ENCRYPT 0
-#define RIJNDAEL_DECRYPT 1
+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 struct {
- int ROUNDS; /* key-length-dependent number of rounds */
- u_int8_t keySched[RIJNDAEL_MAXROUNDS+1][4][4];
-} rijndael_key;
+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 */
-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);
+typedef struct _rijndael_ctx {
+ u4byte k_len;
+ int decrypt;
+ u4byte e_key[64];
+ u4byte d_key[64];
+} rijndael_ctx;
-#endif
+
+/* 2. Standard interface for AES cryptographic routines */
+
+/* These are all based on 32 bit unsigned values and will therefore */
+/* require endian conversions for big-endian architectures */
+
+rijndael_ctx *rijndael_set_key __P((rijndael_ctx *, const u4byte *, u4byte, int));
+void rijndael_encrypt __P((rijndael_ctx *, const u4byte *, u4byte *));
+void rijndael_decrypt __P((rijndael_ctx *, const u4byte *, u4byte *));
+
+#endif /* _RIJNDAEL_H_ */