pq_compat.h revision 296465 
1/* crypto/pqueue/pqueue_compat.h */
2/*
3 * DTLS implementation written by Nagendra Modadugu
4 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
5 */
6/* ====================================================================
7 * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    openssl-core@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60#ifndef HEADER_PQ_COMPAT_H
61# define HEADER_PQ_COMPAT_H
62
63# include <openssl/opensslconf.h>
64# include <openssl/bn.h>
65
66/*
67 * The purpose of this header file is for supporting 64-bit integer
68 * manipulation on 32-bit (and lower) machines.  Currently the only
69 * such environment is VMS, Utrix and those with smaller default integer
70 * sizes than 32 bits.  For all such environment, we fall back to using
71 * BIGNUM.  We may need to fine tune the conditions for systems that
72 * are incorrectly configured.
73 *
74 * The only clients of this code are (1) pqueue for priority, and
75 * (2) DTLS, for sequence number manipulation.
76 */
77
78# if (defined(THIRTY_TWO_BIT) && !defined(BN_LLONG)) || defined(SIXTEEN_BIT) || defined(EIGHT_BIT)
79
80#  define PQ_64BIT_IS_INTEGER 0
81#  define PQ_64BIT_IS_BIGNUM 1
82
83#  define PQ_64BIT     BIGNUM
84#  define PQ_64BIT_CTX BN_CTX
85
86#  define pq_64bit_init(x)           BN_init(x)
87#  define pq_64bit_free(x)           BN_free(x)
88
89#  define pq_64bit_ctx_new(ctx)      BN_CTX_new()
90#  define pq_64bit_ctx_free(x)       BN_CTX_free(x)
91
92#  define pq_64bit_assign(x, y)      BN_copy(x, y)
93#  define pq_64bit_assign_word(x, y) BN_set_word(x, y)
94#  define pq_64bit_gt(x, y)          BN_ucmp(x, y) >= 1 ? 1 : 0
95#  define pq_64bit_eq(x, y)          BN_ucmp(x, y) == 0 ? 1 : 0
96#  define pq_64bit_add_word(x, w)    BN_add_word(x, w)
97#  define pq_64bit_sub(r, x, y)      BN_sub(r, x, y)
98#  define pq_64bit_sub_word(x, w)    BN_sub_word(x, w)
99#  define pq_64bit_mod(r, x, n, ctx) BN_mod(r, x, n, ctx)
100
101#  define pq_64bit_bin2num(bn, bytes, len)   BN_bin2bn(bytes, len, bn)
102#  define pq_64bit_num2bin(bn, bytes)        BN_bn2bin(bn, bytes)
103#  define pq_64bit_get_word(x)               BN_get_word(x)
104#  define pq_64bit_is_bit_set(x, offset)     BN_is_bit_set(x, offset)
105#  define pq_64bit_lshift(r, x, shift)       BN_lshift(r, x, shift)
106#  define pq_64bit_set_bit(x, num)           BN_set_bit(x, num)
107#  define pq_64bit_get_length(x)             BN_num_bits((x))
108
109# else
110
111#  define PQ_64BIT_IS_INTEGER 1
112#  define PQ_64BIT_IS_BIGNUM 0
113
114#  if defined(SIXTY_FOUR_BIT)
115#   define PQ_64BIT BN_ULONG
116#   define PQ_64BIT_PRINT "%lld"
117#  elif defined(SIXTY_FOUR_BIT_LONG)
118#   define PQ_64BIT BN_ULONG
119#   define PQ_64BIT_PRINT "%ld"
120#  elif defined(THIRTY_TWO_BIT)
121#   define PQ_64BIT BN_ULLONG
122#   define PQ_64BIT_PRINT "%lld"
123#  endif
124
125#  define PQ_64BIT_CTX      void
126
127#  define pq_64bit_init(x)
128#  define pq_64bit_free(x)
129#  define pq_64bit_ctx_new(ctx)        (ctx)
130#  define pq_64bit_ctx_free(x)
131
132#  define pq_64bit_assign(x, y)        (*(x) = *(y))
133#  define pq_64bit_assign_word(x, y)   (*(x) = y)
134#  define pq_64bit_gt(x, y)                (*(x) > *(y))
135#  define pq_64bit_eq(x, y)            (*(x) == *(y))
136#  define pq_64bit_add_word(x, w)      (*(x) = (*(x) + (w)))
137#  define pq_64bit_sub(r, x, y)        (*(r) = (*(x) - *(y)))
138#  define pq_64bit_sub_word(x, w)      (*(x) = (*(x) - (w)))
139#  define pq_64bit_mod(r, x, n, ctx)
140
141#  define pq_64bit_bin2num(num, bytes, len) bytes_to_long_long(bytes, num)
142#  define pq_64bit_num2bin(num, bytes)      long_long_to_bytes(num, bytes)
143#  define pq_64bit_get_word(x)              *(x)
144#  define pq_64bit_lshift(r, x, shift)      (*(r) = (*(x) << (shift)))
145#  define pq_64bit_set_bit(x, num)          do { \
146                                              PQ_64BIT mask = 1; \
147                                              mask = mask << (num); \
148                                              *(x) |= mask; \
149                                          } while(0)
150# endif                         /* OPENSSL_SYS_VMS */
151
152#endif
153