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 */ 81