168651Skris/* crypto/evp/e_rc5.c */ 268651Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 368651Skris * All rights reserved. 468651Skris * 568651Skris * This package is an SSL implementation written 668651Skris * by Eric Young (eay@cryptsoft.com). 768651Skris * The implementation was written so as to conform with Netscapes SSL. 8296341Sdelphij * 968651Skris * This library is free for commercial and non-commercial use as long as 1068651Skris * the following conditions are aheared to. The following conditions 1168651Skris * apply to all code found in this distribution, be it the RC4, RSA, 1268651Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1368651Skris * included with this distribution is covered by the same copyright terms 1468651Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15296341Sdelphij * 1668651Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1768651Skris * the code are not to be removed. 1868651Skris * If this package is used in a product, Eric Young should be given attribution 1968651Skris * as the author of the parts of the library used. 2068651Skris * This can be in the form of a textual message at program startup or 2168651Skris * in documentation (online or textual) provided with the package. 22296341Sdelphij * 2368651Skris * Redistribution and use in source and binary forms, with or without 2468651Skris * modification, are permitted provided that the following conditions 2568651Skris * are met: 2668651Skris * 1. Redistributions of source code must retain the copyright 2768651Skris * notice, this list of conditions and the following disclaimer. 2868651Skris * 2. Redistributions in binary form must reproduce the above copyright 2968651Skris * notice, this list of conditions and the following disclaimer in the 3068651Skris * documentation and/or other materials provided with the distribution. 3168651Skris * 3. All advertising materials mentioning features or use of this software 3268651Skris * must display the following acknowledgement: 3368651Skris * "This product includes cryptographic software written by 3468651Skris * Eric Young (eay@cryptsoft.com)" 3568651Skris * The word 'cryptographic' can be left out if the rouines from the library 3668651Skris * being used are not cryptographic related :-). 37296341Sdelphij * 4. If you include any Windows specific code (or a derivative thereof) from 3868651Skris * the apps directory (application code) you must include an acknowledgement: 3968651Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40296341Sdelphij * 4168651Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4268651Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4368651Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4468651Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4568651Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4668651Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4768651Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4868651Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4968651Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5068651Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5168651Skris * SUCH DAMAGE. 52296341Sdelphij * 5368651Skris * The licence and distribution terms for any publically available version or 5468651Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5568651Skris * copied and put under another distribution licence 5668651Skris * [including the GNU Public Licence.] 5768651Skris */ 5868651Skris 59160814Ssimon#include <stdio.h> 60160814Ssimon#include "cryptlib.h" 61160814Ssimon 62109998Smarkm#ifndef OPENSSL_NO_RC5 6368651Skris 64296341Sdelphij# include <openssl/evp.h> 65296341Sdelphij# include <openssl/objects.h> 66296341Sdelphij# include "evp_locl.h" 67296341Sdelphij# include <openssl/rc5.h> 6868651Skris 6968651Skrisstatic int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 70296341Sdelphij const unsigned char *iv, int enc); 7168651Skrisstatic int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); 7268651Skris 73296341Sdelphijtypedef struct { 74296341Sdelphij int rounds; /* number of rounds */ 75296341Sdelphij RC5_32_KEY ks; /* key schedule */ 76296341Sdelphij} EVP_RC5_KEY; 7768651Skris 78296341Sdelphij# define data(ctx) EVP_C_DATA(EVP_RC5_KEY,ctx) 7968651Skris 80109998SmarkmIMPLEMENT_BLOCK_CIPHER(rc5_32_12_16, ks, RC5_32, EVP_RC5_KEY, NID_rc5, 81296341Sdelphij 8, RC5_32_KEY_LENGTH, 8, 64, 82296341Sdelphij EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, 83296341Sdelphij r_32_12_16_init_key, NULL, NULL, NULL, rc5_ctrl) 8468651Skris 8568651Skrisstatic int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 86296341Sdelphij{ 87296341Sdelphij switch (type) { 88296341Sdelphij case EVP_CTRL_INIT: 89296341Sdelphij data(c)->rounds = RC5_12_ROUNDS; 90296341Sdelphij return 1; 9168651Skris 92296341Sdelphij case EVP_CTRL_GET_RC5_ROUNDS: 93296341Sdelphij *(int *)ptr = data(c)->rounds; 94296341Sdelphij return 1; 9568651Skris 96296341Sdelphij case EVP_CTRL_SET_RC5_ROUNDS: 97296341Sdelphij switch (arg) { 98296341Sdelphij case RC5_8_ROUNDS: 99296341Sdelphij case RC5_12_ROUNDS: 100296341Sdelphij case RC5_16_ROUNDS: 101296341Sdelphij data(c)->rounds = arg; 102296341Sdelphij return 1; 10368651Skris 104296341Sdelphij default: 105296341Sdelphij EVPerr(EVP_F_RC5_CTRL, EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS); 106296341Sdelphij return 0; 107296341Sdelphij } 10868651Skris 109296341Sdelphij default: 110296341Sdelphij return -1; 111296341Sdelphij } 112296341Sdelphij} 113296341Sdelphij 11468651Skrisstatic int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 115296341Sdelphij const unsigned char *iv, int enc) 116296341Sdelphij{ 117296341Sdelphij RC5_32_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), 118296341Sdelphij key, data(ctx)->rounds); 119296341Sdelphij return 1; 120296341Sdelphij} 12168651Skris 12268651Skris#endif 123