Implement Aria GCM/CCM Modes and TLS cipher suites
[openssl.git] / crypto / evp / e_rc5.c
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 #include <stdio.h>
11 #include "internal/cryptlib.h"
12
13 #ifndef OPENSSL_NO_RC5
14
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>
20
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);
24
25 typedef struct {
26     int rounds;                 /* number of rounds */
27     RC5_32_KEY ks;              /* key schedule */
28 } EVP_RC5_KEY;
29
30 # define data(ctx)       EVP_C_DATA(EVP_RC5_KEY,ctx)
31
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)
36
37 static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
38 {
39     switch (type) {
40     case EVP_CTRL_INIT:
41         data(c)->rounds = RC5_12_ROUNDS;
42         return 1;
43
44     case EVP_CTRL_GET_RC5_ROUNDS:
45         *(int *)ptr = data(c)->rounds;
46         return 1;
47
48     case EVP_CTRL_SET_RC5_ROUNDS:
49         switch (arg) {
50         case RC5_8_ROUNDS:
51         case RC5_12_ROUNDS:
52         case RC5_16_ROUNDS:
53             data(c)->rounds = arg;
54             return 1;
55
56         default:
57             EVPerr(EVP_F_RC5_CTRL, EVP_R_UNSUPPORTED_NUMBER_OF_ROUNDS);
58             return 0;
59         }
60
61     default:
62         return -1;
63     }
64 }
65
66 static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
67                                const unsigned char *iv, int enc)
68 {
69     RC5_32_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
70                    key, data(ctx)->rounds);
71     return 1;
72 }
73
74 #endif