Initial import of AES algorithm code (aka Rijndael) from KAME.

1 files changed, 99 insertions, 0 deletions

diff --git a/sys/crypto/rijndael/rijndael-api-fst.h b/sys/crypto/rijndael/rijndael-api-fst.h
new file mode 100644
index 0000000..c98f3f4
--- /dev/null
+++ b/sys/crypto/rijndael/rijndael-api-fst.h
@@ -0,0 +1,99 @@
+/*	$KAME$	*/
+
+/*
+ * rijndael-api-fst.h   v2.3   April '2000
+ *
+ * Optimised ANSI C code
+ *
+ * #define INTERMEDIATE_VALUE_KAT to generate the Intermediate Value Known Answer Test.
+ */
+
+#ifndef __RIJNDAEL_API_FST_H
+#define __RIJNDAEL_API_FST_H
+
+#include <crypto/rijndael/rijndael-alg-fst.h>
+
+/*  Defines:
+	Add any additional defines you need
+*/
+
+#define     DIR_ENCRYPT           0 /*  Are we encrpyting?  */
+#define     DIR_DECRYPT           1 /*  Are we decrpyting?  */
+#define     MODE_ECB              1 /*  Are we ciphering in ECB mode?   */
+#define     MODE_CBC              2 /*  Are we ciphering in CBC mode?   */
+#define     MODE_CFB1             3 /*  Are we ciphering in 1-bit CFB mode? */
+#define     TRUE                  1
+#define     FALSE                 0
+#define     BITSPERBLOCK        128 /* Default number of bits in a cipher block */
+
+/*  Error Codes - CHANGE POSSIBLE: inclusion of additional error codes  */
+#define     BAD_KEY_DIR          -1 /*  Key direction is invalid, e.g., unknown value */
+#define     BAD_KEY_MAT          -2 /*  Key material not of correct length */
+#define     BAD_KEY_INSTANCE     -3 /*  Key passed is not valid */
+#define     BAD_CIPHER_MODE      -4 /*  Params struct passed to cipherInit invalid */
+#define     BAD_CIPHER_STATE     -5 /*  Cipher in wrong state (e.g., not initialized) */
+#define     BAD_BLOCK_LENGTH     -6
+#define     BAD_CIPHER_INSTANCE  -7
+#define     BAD_DATA             -8 /*  Data contents are invalid, e.g., invalid padding */
+#define     BAD_OTHER            -9 /*  Unknown error */
+
+/*  CHANGE POSSIBLE:  inclusion of algorithm specific defines  */
+#define     MAX_KEY_SIZE         64 /* # of ASCII char's needed to represent a key */
+#define     MAX_IV_SIZE          16 /* # bytes needed to represent an IV  */
+
+/*  Typedefs:
+
+	Typedef'ed data storage elements.  Add any algorithm specific 
+parameters at the bottom of the structs as appropriate.
+*/
+
+/*  The structure for key information */
+typedef struct {
+    u_int8_t  direction;            /* Key used for encrypting or decrypting? */
+    int   keyLen;                   /* Length of the key  */
+    char  keyMaterial[MAX_KEY_SIZE+1];  /* Raw key data in ASCII, e.g., user input or KAT values */
+        /*  The following parameters are algorithm dependent, replace or add as necessary  */
+	int   ROUNDS;                   /* key-length-dependent number of rounds */
+    int   blockLen;                 /* block length */
+    u_int8_t keySched[RIJNDAEL_MAXROUNDS+1][4][4];	/* key schedule		*/
+} keyInstance;
+
+/*  The structure for cipher information */
+typedef struct {                    /* changed order of the components */
+    u_int8_t mode;                  /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
+    u_int8_t IV[MAX_IV_SIZE];       /* A possible Initialization Vector for ciphering */
+        /*  Add any algorithm specific parameters needed here  */
+    int   blockLen;                 /* Sample: Handles non-128 bit block sizes (if available) */
+} cipherInstance;
+
+/*  Function prototypes  */
+/*  CHANGED: nothing
+	TODO: implement the following extensions to setup 192-bit and 256-bit block lengths:
+        makeKeyEx():    parameter blockLen added
+                        -- this parameter is absolutely necessary if you want to
+                        setup the round keys in a variable block length setting 
+	    cipherInitEx(): parameter blockLen added (for obvious reasons)		
+ */
+
+int rijndael_makeKey(keyInstance *key, u_int8_t direction, int keyLen, char *keyMaterial);
+
+int rijndael_cipherInit(cipherInstance *cipher, u_int8_t mode, char *IV);
+
+int rijndael_blockEncrypt(cipherInstance *cipher, keyInstance *key,
+        u_int8_t *input, int inputLen, u_int8_t *outBuffer);
+
+int rijndael_padEncrypt(cipherInstance *cipher, keyInstance *key,
+		u_int8_t *input, int inputOctets, u_int8_t *outBuffer);
+
+int rijndael_blockDecrypt(cipherInstance *cipher, keyInstance *key,
+        u_int8_t *input, int inputLen, u_int8_t *outBuffer);
+
+int rijndael_padDecrypt(cipherInstance *cipher, keyInstance *key,
+		u_int8_t *input, int inputOctets, u_int8_t *outBuffer);
+
+#ifdef INTERMEDIATE_VALUE_KAT
+int rijndael_cipherUpdateRounds(cipherInstance *cipher, keyInstance *key,
+        u_int8_t *input, int inputLen, u_int8_t *outBuffer, int Rounds);
+#endif /* INTERMEDIATE_VALUE_KAT */
+
+#endif /*  __RIJNDAEL_API_FST_H */