1 /* 2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef HEADER_RC5_H 11 # define HEADER_RC5_H 12 13 # include <openssl/opensslconf.h> 14 15 # ifndef OPENSSL_NO_RC5 16 # ifdef __cplusplus 17 extern "C" { 18 # endif 19 20 # define RC5_ENCRYPT 1 21 # define RC5_DECRYPT 0 22 23 # define RC5_32_INT unsigned int 24 25 # define RC5_32_BLOCK 8 26 # define RC5_32_KEY_LENGTH 16/* This is a default, max is 255 */ 27 28 /* 29 * This are the only values supported. Tweak the code if you want more The 30 * most supported modes will be RC5-32/12/16 RC5-32/16/8 31 */ 32 # define RC5_8_ROUNDS 8 33 # define RC5_12_ROUNDS 12 34 # define RC5_16_ROUNDS 16 35 36 typedef struct rc5_key_st { 37 /* Number of rounds */ 38 int rounds; 39 RC5_32_INT data[2 * (RC5_16_ROUNDS + 1)]; 40 } RC5_32_KEY; 41 42 void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data, 43 int rounds); 44 void RC5_32_ecb_encrypt(const unsigned char *in, unsigned char *out, 45 RC5_32_KEY *key, int enc); 46 void RC5_32_encrypt(unsigned long *data, RC5_32_KEY *key); 47 void RC5_32_decrypt(unsigned long *data, RC5_32_KEY *key); 48 void RC5_32_cbc_encrypt(const unsigned char *in, unsigned char *out, 49 long length, RC5_32_KEY *ks, unsigned char *iv, 50 int enc); 51 void RC5_32_cfb64_encrypt(const unsigned char *in, unsigned char *out, 52 long length, RC5_32_KEY *schedule, 53 unsigned char *ivec, int *num, int enc); 54 void RC5_32_ofb64_encrypt(const unsigned char *in, unsigned char *out, 55 long length, RC5_32_KEY *schedule, 56 unsigned char *ivec, int *num); 57 58 # ifdef __cplusplus 59 } 60 # endif 61 # endif 62 63 #endif 64