rijndael.h

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/*
 * contrib/pgcrypto/rijndael.h
 *
 *  $OpenBSD: rijndael.h,v 1.3 2001/05/09 23:01:32 markus 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.  */
/*                                                                      */
/* Copyright in this implementation is held by Dr B R Gladman but I     */
/* hereby give permission for its free direct or derivative use subject */
/* to acknowledgment of its origin and compliance with any conditions   */
/* that the originators of the algorithm place on its exploitation.     */
/*                                                                      */
/* Dr Brian Gladman ([email protected]) 14th January 1999     */

#ifndef _RIJNDAEL_H_
#define _RIJNDAEL_H_

/* 1. Standard types for AES cryptography source code               */

typedef uint8 u1byte;           /* an 8 bit unsigned character type */
typedef uint16 u2byte;          /* a 16 bit unsigned integer type   */
typedef uint32 u4byte;          /* a 32 bit unsigned integer type   */

typedef int8 s1byte;            /* an 8 bit signed character type   */
typedef int16 s2byte;           /* a 16 bit signed integer type     */
typedef int32 s4byte;           /* a 32 bit signed integer type     */

typedef struct _rijndael_ctx
{
    u4byte      k_len;
    int         decrypt;
    u4byte      e_key[64];
    u4byte      d_key[64];
} rijndael_ctx;


/* 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(rijndael_ctx *, const u4byte *, const u4byte, int);
void        rijndael_encrypt(rijndael_ctx *, const u4byte *, u4byte *);
void        rijndael_decrypt(rijndael_ctx *, const u4byte *, u4byte *);

/* conventional interface */

void        aes_set_key(rijndael_ctx *ctx, const uint8 *key, unsigned keybits, int enc);
void        aes_ecb_encrypt(rijndael_ctx *ctx, uint8 *data, unsigned len);
void        aes_ecb_decrypt(rijndael_ctx *ctx, uint8 *data, unsigned len);
void        aes_cbc_encrypt(rijndael_ctx *ctx, uint8 *iva, uint8 *data, unsigned len);
void        aes_cbc_decrypt(rijndael_ctx *ctx, uint8 *iva, uint8 *data, unsigned len);

#endif   /* _RIJNDAEL_H_ */