contrib/pgcrypto/rijndael.h

   1 /*
   2  * $PostgreSQL:$
   3  *
   4  *      $OpenBSD$ */
   5
   6 /* This is an independent implementation of the encryption algorithm:   */
   7 /*                                                                                                                                              */
   8 /*                 RIJNDAEL by Joan Daemen and Vincent Rijmen                                   */
   9 /*                                                                                                                                              */
  10 /* which is a candidate algorithm in the Advanced Encryption Standard   */
  11 /* programme of the US National Institute of Standards and Technology.  */
  12 /*                                                                                                                                              */
  13 /* Copyright in this implementation is held by Dr B R Gladman but I             */
  14 /* hereby give permission for its free direct or derivative use subject */
  15 /* to acknowledgment of its origin and compliance with any conditions   */
  16 /* that the originators of the algorithm place on its exploitation.             */
  17 /*                                                                                                                                              */
  18 /* Dr Brian Gladman (gladman@seven77.demon.co.uk) 14th January 1999             */
  19
  20 #ifndef _RIJNDAEL_H_
  21 #define _RIJNDAEL_H_
  22
  23 /* 1. Standard types for AES cryptography source code                           */
  24
  25 typedef uint8 u1byte;                   /* an 8 bit unsigned character type */
  26 typedef uint16 u2byte;                  /* a 16 bit unsigned integer type       */
  27 typedef uint32 u4byte;                  /* a 32 bit unsigned integer type       */
  28
  29 typedef int8 s1byte;                    /* an 8 bit signed character type       */
  30 typedef int16 s2byte;                   /* a 16 bit signed integer type         */
  31 typedef int32 s4byte;                   /* a 32 bit signed integer type         */
  32
  33 typedef struct _rijndael_ctx
  34 {
  35         u4byte          k_len;
  36         int                     decrypt;
  37         u4byte          e_key[64];
  38         u4byte          d_key[64];
  39 }       rijndael_ctx;
  40
  41
  42 /* 2. Standard interface for AES cryptographic routines                         */
  43
  44 /* These are all based on 32 bit unsigned values and will therefore */
  45 /* require endian conversions for big-endian architectures                      */
  46
  47 rijndael_ctx *
  48                         rijndael_set_key(rijndael_ctx *, const u4byte *, const u4byte, int);
  49 void            rijndael_encrypt(rijndael_ctx *, const u4byte *, u4byte *);
  50 void            rijndael_decrypt(rijndael_ctx *, const u4byte *, u4byte *);
  51
  52 /* conventional interface */
  53
  54 void            aes_set_key(rijndael_ctx * ctx, const uint8 *key, unsigned keybits, int enc);
  55 void            aes_ecb_encrypt(rijndael_ctx * ctx, uint8 *data, unsigned len);
  56 void            aes_ecb_decrypt(rijndael_ctx * ctx, uint8 *data, unsigned len);
  57 void            aes_cbc_encrypt(rijndael_ctx * ctx, uint8 *iva, uint8 *data, unsigned len);
  58 void            aes_cbc_decrypt(rijndael_ctx * ctx, uint8 *iva, uint8 *data, unsigned len);
  59
  60 #endif   /* _RIJNDAEL_H_ */