2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
13 #ifndef OPENSSL_NO_RC5
15 # include <openssl/evp.h>
16 # include "internal/evp_int.h"
17 # include <openssl/objects.h>
18 # include "evp_locl.h"
19 # include <openssl/rc5.h>
21 static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
22 const unsigned char *iv, int enc);
23 static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
26 int rounds; /* number of rounds */
27 RC5_32_KEY ks; /* key schedule */
30 # define data(ctx) EVP_C_DATA(EVP_RC5_KEY,ctx)
32 IMPLEMENT_BLOCK_CIPHER(rc5_32_12_16, ks, RC5_32, EVP_RC5_KEY, NID_rc5,
33 8, RC5_32_KEY_LENGTH, 8, 64,
34 EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
35 r_32_12_16_init_key, NULL, NULL, NULL, rc5_ctrl)
37 static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
41 data(c)->rounds = RC5_12_ROUNDS;
44 case EVP_CTRL_GET_RC5_ROUNDS:
45 *(int *)ptr = data(c)->rounds;
48 case EVP_CTRL_SET_RC5_ROUNDS:
53 data(c)->rounds = arg;
57 EVPerr(EVP_F_RC5_CTRL, EVP_R_UNSUPPORTED_NUMBER_OF_ROUNDS);
66 static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
67 const unsigned char *iv, int enc)
69 RC5_32_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
70 key, data(ctx)->rounds);