1 /* 2 * contrib/pgcrypto/rijndael.h 3 * 4 * $OpenBSD: rijndael.h,v 1.3 2001/05/09 23:01:32 markus Exp $ */ 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 *rijndael_set_key(rijndael_ctx *, const u4byte *, const u4byte, int); 48 void rijndael_encrypt(rijndael_ctx *, const u4byte *, u4byte *); 49 void rijndael_decrypt(rijndael_ctx *, const u4byte *, u4byte *); 50 51 /* conventional interface */ 52 53 void aes_set_key(rijndael_ctx *ctx, const uint8 *key, unsigned keybits, int enc); 54 void aes_ecb_encrypt(rijndael_ctx *ctx, uint8 *data, unsigned len); 55 void aes_ecb_decrypt(rijndael_ctx *ctx, uint8 *data, unsigned len); 56 void aes_cbc_encrypt(rijndael_ctx *ctx, uint8 *iva, uint8 *data, unsigned len); 57 void aes_cbc_decrypt(rijndael_ctx *ctx, uint8 *iva, uint8 *data, unsigned len); 58 59 #endif /* _RIJNDAEL_H_ */ 60