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1/* crypto/rc5/rc5_locl.h */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdlib.h>
60
61#undef c2l
62#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
63 l|=((unsigned long)(*((c)++)))<< 8L, \
64 l|=((unsigned long)(*((c)++)))<<16L, \
65 l|=((unsigned long)(*((c)++)))<<24L)
66
67/* NOTE - c is not incremented as per c2l */
68#undef c2ln
69#define c2ln(c,l1,l2,n) { \
70 c+=n; \
71 l1=l2=0; \
72 switch (n) { \
73 case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
74 case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
75 case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
76 case 5: l2|=((unsigned long)(*(--(c)))); \
77 case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
78 case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
79 case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
80 case 1: l1|=((unsigned long)(*(--(c)))); \
81 } \
82 }
83
84#undef l2c
85#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
86 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
87 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
88 *((c)++)=(unsigned char)(((l)>>24L)&0xff))
89
90/* NOTE - c is not incremented as per l2c */
91#undef l2cn
92#define l2cn(l1,l2,c,n) { \
93 c+=n; \
94 switch (n) { \
95 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
96 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
97 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
98 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
99 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
100 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
101 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
102 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
103 } \
104 }
105
106/* NOTE - c is not incremented as per n2l */
107#define n2ln(c,l1,l2,n) { \
108 c+=n; \
109 l1=l2=0; \
110 switch (n) { \
111 case 8: l2 =((unsigned long)(*(--(c)))) ; \
112 case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
113 case 6: l2|=((unsigned long)(*(--(c))))<<16; \
114 case 5: l2|=((unsigned long)(*(--(c))))<<24; \
115 case 4: l1 =((unsigned long)(*(--(c)))) ; \
116 case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
117 case 2: l1|=((unsigned long)(*(--(c))))<<16; \
118 case 1: l1|=((unsigned long)(*(--(c))))<<24; \
119 } \
120 }
121
122/* NOTE - c is not incremented as per l2n */
123#define l2nn(l1,l2,c,n) { \
124 c+=n; \
125 switch (n) { \
126 case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
127 case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
128 case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
129 case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
130 case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
131 case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
132 case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
133 case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
134 } \
135 }
136
137#undef n2l
138#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
139 l|=((unsigned long)(*((c)++)))<<16L, \
140 l|=((unsigned long)(*((c)++)))<< 8L, \
141 l|=((unsigned long)(*((c)++))))
142
143#undef l2n
144#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
145 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
146 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
147 *((c)++)=(unsigned char)(((l) )&0xff))
148
149#if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)) || defined(__ICC)
150#define ROTATE_l32(a,n) _lrotl(a,n)
151#define ROTATE_r32(a,n) _lrotr(a,n)
152#elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
153# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
154# define ROTATE_l32(a,n) ({ register unsigned int ret; \
155 asm ("roll %%cl,%0" \
156 : "=r"(ret) \
157 : "c"(n),"0"(a) \
158 : "cc"); \
159 ret; \
160 })
161# define ROTATE_r32(a,n) ({ register unsigned int ret; \
162 asm ("rorl %%cl,%0" \
163 : "=r"(ret) \
164 : "c"(n),"0"(a) \
165 : "cc"); \
166 ret; \
167 })
168# endif
169#endif
170#ifndef ROTATE_l32
171#define ROTATE_l32(a,n) (((a)<<(n&0x1f))|(((a)&0xffffffff)>>(32-(n&0x1f))))
172#endif
173#ifndef ROTATE_r32
174#define ROTATE_r32(a,n) (((a)<<(32-(n&0x1f)))|(((a)&0xffffffff)>>(n&0x1f)))
175#endif
176
177#define RC5_32_MASK 0xffffffffL
178
179#define RC5_16_P 0xB7E1
180#define RC5_16_Q 0x9E37
181#define RC5_32_P 0xB7E15163L
182#define RC5_32_Q 0x9E3779B9L
183#define RC5_64_P 0xB7E151628AED2A6BLL
184#define RC5_64_Q 0x9E3779B97F4A7C15LL
185
186#define E_RC5_32(a,b,s,n) \
187 a^=b; \
188 a=ROTATE_l32(a,b); \
189 a+=s[n]; \
190 a&=RC5_32_MASK; \
191 b^=a; \
192 b=ROTATE_l32(b,a); \
193 b+=s[n+1]; \
194 b&=RC5_32_MASK;
195
196#define D_RC5_32(a,b,s,n) \
197 b-=s[n+1]; \
198 b&=RC5_32_MASK; \
199 b=ROTATE_r32(b,a); \
200 b^=a; \
201 a-=s[n]; \
202 a&=RC5_32_MASK; \
203 a=ROTATE_r32(a,b); \
204 a^=b;
205
206
207
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