xref: /openssl/crypto/seed/seed_local.h (revision 38fc02a7)
1 /*
2  * Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (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 /*
11  * Copyright (c) 2007 KISA(Korea Information Security Agency). All rights reserved.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Neither the name of author nor the names of its contributors may
19  *    be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  */
35 #ifndef OSSL_CRYPTO_SEED_LOCAL_H
36 # define OSSL_CRYPTO_SEED_LOCAL_H
37 
38 # include <openssl/e_os2.h>
39 # include <openssl/seed.h>
40 
41 # ifdef SEED_LONG               /* need 32-bit type */
42 typedef unsigned long seed_word;
43 # else
44 typedef unsigned int seed_word;
45 # endif
46 
47 
48 # define char2word(c, i)  \
49         (i) = ((((seed_word)(c)[0]) << 24) | (((seed_word)(c)[1]) << 16) | (((seed_word)(c)[2]) << 8) | ((seed_word)(c)[3]))
50 
51 # define word2char(l, c)  \
52         *((c)+0) = (unsigned char)((l)>>24) & 0xff; \
53         *((c)+1) = (unsigned char)((l)>>16) & 0xff; \
54         *((c)+2) = (unsigned char)((l)>> 8) & 0xff; \
55         *((c)+3) = (unsigned char)((l))     & 0xff
56 
57 # define KEYSCHEDULE_UPDATE0(T0, T1, X1, X2, X3, X4, KC)  \
58         (T0) = (X3);                                     \
59         (X3) = (((X3)<<8) ^ ((X4)>>24)) & 0xffffffff;    \
60         (X4) = (((X4)<<8) ^ ((T0)>>24)) & 0xffffffff;    \
61         (T0) = ((X1) + (X3) - (KC))     & 0xffffffff;    \
62         (T1) = ((X2) + (KC) - (X4))     & 0xffffffff
63 
64 # define KEYSCHEDULE_UPDATE1(T0, T1, X1, X2, X3, X4, KC)  \
65         (T0) = (X1);                                     \
66         (X1) = (((X1)>>8) ^ ((X2)<<24)) & 0xffffffff;    \
67         (X2) = (((X2)>>8) ^ ((T0)<<24)) & 0xffffffff;    \
68         (T0) = ((X1) + (X3) - (KC))     & 0xffffffff;     \
69         (T1) = ((X2) + (KC) - (X4))     & 0xffffffff
70 
71 # define KEYUPDATE_TEMP(T0, T1, K)   \
72         (K)[0] = G_FUNC((T0));      \
73         (K)[1] = G_FUNC((T1))
74 
75 # define XOR_SEEDBLOCK(DST, SRC)      \
76         ((DST))[0] ^= ((SRC))[0];    \
77         ((DST))[1] ^= ((SRC))[1];    \
78         ((DST))[2] ^= ((SRC))[2];    \
79         ((DST))[3] ^= ((SRC))[3]
80 
81 # define MOV_SEEDBLOCK(DST, SRC)      \
82         ((DST))[0] = ((SRC))[0];     \
83         ((DST))[1] = ((SRC))[1];     \
84         ((DST))[2] = ((SRC))[2];     \
85         ((DST))[3] = ((SRC))[3]
86 
87 # define CHAR2WORD(C, I)              \
88         char2word((C),    (I)[0]);    \
89         char2word((C+4),  (I)[1]);    \
90         char2word((C+8),  (I)[2]);    \
91         char2word((C+12), (I)[3])
92 
93 # define WORD2CHAR(I, C)              \
94         word2char((I)[0], (C));       \
95         word2char((I)[1], (C+4));     \
96         word2char((I)[2], (C+8));     \
97         word2char((I)[3], (C+12))
98 
99 # define E_SEED(T0, T1, X1, X2, X3, X4, rbase)   \
100         (T0) = (X3) ^ (ks->data)[(rbase)];       \
101         (T1) = (X4) ^ (ks->data)[(rbase)+1];     \
102         (T1) ^= (T0);                            \
103         (T1) = G_FUNC((T1));                     \
104         (T0) = ((T0) + (T1)) & 0xffffffff;       \
105         (T0) = G_FUNC((T0));                     \
106         (T1) = ((T1) + (T0)) & 0xffffffff;       \
107         (T1) = G_FUNC((T1));                     \
108         (T0) = ((T0) + (T1)) & 0xffffffff;       \
109         (X1) ^= (T0);                            \
110         (X2) ^= (T1)
111 
112 #endif                          /* OSSL_CRYPTO_SEED_LOCAL_H */
113