1*0Sstevel@tonic-gate /* crypto/evp/e_rc5.c */ 2*0Sstevel@tonic-gate /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * This package is an SSL implementation written 6*0Sstevel@tonic-gate * by Eric Young (eay@cryptsoft.com). 7*0Sstevel@tonic-gate * The implementation was written so as to conform with Netscapes SSL. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * This library is free for commercial and non-commercial use as long as 10*0Sstevel@tonic-gate * the following conditions are aheared to. The following conditions 11*0Sstevel@tonic-gate * apply to all code found in this distribution, be it the RC4, RSA, 12*0Sstevel@tonic-gate * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*0Sstevel@tonic-gate * included with this distribution is covered by the same copyright terms 14*0Sstevel@tonic-gate * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*0Sstevel@tonic-gate * 16*0Sstevel@tonic-gate * Copyright remains Eric Young's, and as such any Copyright notices in 17*0Sstevel@tonic-gate * the code are not to be removed. 18*0Sstevel@tonic-gate * If this package is used in a product, Eric Young should be given attribution 19*0Sstevel@tonic-gate * as the author of the parts of the library used. 20*0Sstevel@tonic-gate * This can be in the form of a textual message at program startup or 21*0Sstevel@tonic-gate * in documentation (online or textual) provided with the package. 22*0Sstevel@tonic-gate * 23*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 24*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 25*0Sstevel@tonic-gate * are met: 26*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the copyright 27*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 28*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 29*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the 30*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution. 31*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software 32*0Sstevel@tonic-gate * must display the following acknowledgement: 33*0Sstevel@tonic-gate * "This product includes cryptographic software written by 34*0Sstevel@tonic-gate * Eric Young (eay@cryptsoft.com)" 35*0Sstevel@tonic-gate * The word 'cryptographic' can be left out if the rouines from the library 36*0Sstevel@tonic-gate * being used are not cryptographic related :-). 37*0Sstevel@tonic-gate * 4. If you include any Windows specific code (or a derivative thereof) from 38*0Sstevel@tonic-gate * the apps directory (application code) you must include an acknowledgement: 39*0Sstevel@tonic-gate * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*0Sstevel@tonic-gate * 41*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*0Sstevel@tonic-gate * SUCH DAMAGE. 52*0Sstevel@tonic-gate * 53*0Sstevel@tonic-gate * The licence and distribution terms for any publically available version or 54*0Sstevel@tonic-gate * derivative of this code cannot be changed. i.e. this code cannot simply be 55*0Sstevel@tonic-gate * copied and put under another distribution licence 56*0Sstevel@tonic-gate * [including the GNU Public Licence.] 57*0Sstevel@tonic-gate */ 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #ifndef OPENSSL_NO_RC5 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate #include <stdio.h> 62*0Sstevel@tonic-gate #include "cryptlib.h" 63*0Sstevel@tonic-gate #include <openssl/evp.h> 64*0Sstevel@tonic-gate #include <openssl/objects.h> 65*0Sstevel@tonic-gate #include "evp_locl.h" 66*0Sstevel@tonic-gate #include <openssl/rc5.h> 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 69*0Sstevel@tonic-gate const unsigned char *iv,int enc); 70*0Sstevel@tonic-gate static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate typedef struct 73*0Sstevel@tonic-gate { 74*0Sstevel@tonic-gate int rounds; /* number of rounds */ 75*0Sstevel@tonic-gate RC5_32_KEY ks; /* key schedule */ 76*0Sstevel@tonic-gate } EVP_RC5_KEY; 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate #define data(ctx) EVP_C_DATA(EVP_RC5_KEY,ctx) 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate IMPLEMENT_BLOCK_CIPHER(rc5_32_12_16, ks, RC5_32, EVP_RC5_KEY, NID_rc5, 81*0Sstevel@tonic-gate 8, RC5_32_KEY_LENGTH, 8, 64, 82*0Sstevel@tonic-gate EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, 83*0Sstevel@tonic-gate r_32_12_16_init_key, NULL, 84*0Sstevel@tonic-gate NULL, NULL, rc5_ctrl) 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) 87*0Sstevel@tonic-gate { 88*0Sstevel@tonic-gate switch(type) 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate case EVP_CTRL_INIT: 91*0Sstevel@tonic-gate data(c)->rounds = RC5_12_ROUNDS; 92*0Sstevel@tonic-gate return 1; 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate case EVP_CTRL_GET_RC5_ROUNDS: 95*0Sstevel@tonic-gate *(int *)ptr = data(c)->rounds; 96*0Sstevel@tonic-gate return 1; 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate case EVP_CTRL_SET_RC5_ROUNDS: 99*0Sstevel@tonic-gate switch(arg) 100*0Sstevel@tonic-gate { 101*0Sstevel@tonic-gate case RC5_8_ROUNDS: 102*0Sstevel@tonic-gate case RC5_12_ROUNDS: 103*0Sstevel@tonic-gate case RC5_16_ROUNDS: 104*0Sstevel@tonic-gate data(c)->rounds = arg; 105*0Sstevel@tonic-gate return 1; 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate default: 108*0Sstevel@tonic-gate EVPerr(EVP_F_RC5_CTRL, EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS); 109*0Sstevel@tonic-gate return 0; 110*0Sstevel@tonic-gate } 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate default: 113*0Sstevel@tonic-gate return -1; 114*0Sstevel@tonic-gate } 115*0Sstevel@tonic-gate } 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, 118*0Sstevel@tonic-gate const unsigned char *iv, int enc) 119*0Sstevel@tonic-gate { 120*0Sstevel@tonic-gate RC5_32_set_key(&data(ctx)->ks,EVP_CIPHER_CTX_key_length(ctx), 121*0Sstevel@tonic-gate key,data(ctx)->rounds); 122*0Sstevel@tonic-gate return 1; 123*0Sstevel@tonic-gate } 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate #endif 126