drivers/random/aes/rijndael.h

   1 /*      rijndael-api.h - Rijndael encryption programming interface.
   2  *                                                      Author: Kees J. Bot
   3  *                                                              3 Nov 2000
   4  * Heavily based on the original API code by Antoon Bosselaers,
   5  * Vincent Rijmen, and Paulo Barreto, but with a different interface.
   6  *
   7  * This code (.h and .c) is in the public domain.
   8  */
   9
  10 #ifndef _CRYPTO__RIJNDAEL_H
  11 #define _CRYPTO__RIJNDAEL_H
  12
  13 /* Error codes. */
  14 #define RD_BAD_KEY_MAT      -1  /* Key material not of correct length */
  15 #define RD_BAD_BLOCK_LENGTH -2  /* Data is not a block multiple */
  16 #define RD_BAD_DATA         -3  /* Data contents are invalid (bad padding?) */
  17
  18 /* Key information. */
  19 #define RD_KEY_HEX          -1  /* Key is in hex (otherwise octet length) */
  20 #define RD_MAXROUNDS        14  /* Max number of encryption rounds. */
  21
  22 typedef struct {
  23         int     rounds;         /* Key-length-dependent number of rounds */
  24         unsigned char encsched[RD_MAXROUNDS+1][4][4];   /* Encr key schedule */
  25         unsigned char decsched[RD_MAXROUNDS+1][4][4];   /* Decr key schedule */
  26 } rd_keyinstance;
  27
  28 #define AES_BLOCKSIZE   16
  29
  30 /* Function prototypes. */
  31
  32 int rijndael_makekey(rd_keyinstance *_key,
  33         size_t _keylen, const void *_keymaterial);
  34
  35 ssize_t rijndael_ecb_encrypt(rd_keyinstance *_key,
  36         const void *_input, void *_output, size_t _length, void *_dummyIV);
  37
  38 ssize_t rijndael_ecb_decrypt(rd_keyinstance *_key,
  39         const void *_input, void *_output, size_t _length, void *_dummyIV);
  40
  41 ssize_t rijndael_cbc_encrypt(rd_keyinstance *_key,
  42         const void *_input, void *_output, size_t _length, void *_IV);
  43
  44 ssize_t rijndael_cbc_decrypt(rd_keyinstance *_key,
  45         const void *_input, void *_output, size_t _length, void *_IV);
  46
  47 ssize_t rijndael_cfb1_encrypt(rd_keyinstance *_key,
  48         const void *_input, void *_output, size_t _length, void *_IV);
  49
  50 ssize_t rijndael_cfb1_decrypt(rd_keyinstance *_key,
  51         const void *_input, void *_output, size_t _length, void *_IV);
  52
  53 ssize_t rijndael_cfb8_encrypt(rd_keyinstance *_key,
  54         const void *_input, void *_output, size_t _length, void *_IV);
  55
  56 ssize_t rijndael_cfb8_decrypt(rd_keyinstance *_key,
  57         const void *_input, void *_output, size_t _length, void *_IV);
  58
  59 ssize_t rijndael_pad(void *_input, size_t _length);
  60
  61 ssize_t rijndael_unpad(const void *_input, size_t _length);
  62
  63 typedef ssize_t (*rd_function)(rd_keyinstance *_key,
  64         const void *_input, void *_output, size_t _length, void *_IV);
  65
  66 #ifdef INTERMEDIATE_VALUE_KAT
  67
  68 void cipherEncryptUpdateRounds(rd_keyinstance *key,
  69         const void *input, void *output, int rounds);
  70
  71 void cipherDecryptUpdateRounds(rd_keyinstance *key,
  72         const void *input, void *output, int rounds);
  73
  74 #endif /* INTERMEDIATE_VALUE_KAT */
  75
  76 #endif /* _CRYPTO__RIJNDAEL_H */
  77
  78 /*
  79  * $PchId: rijndael.h,v 1.1 2005/06/01 10:13:45 philip Exp $
  80  */