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58964a49 RE |
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 | ||
cf1b7d96 | 149 | #if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER) |
58964a49 RE |
150 | #define ROTATE_l32(a,n) _lrotl(a,n) |
151 | #define ROTATE_r32(a,n) _lrotr(a,n) | |
2f98abbc AP |
152 | #elif defined(__GNUC__) && __GNUC__>=2 && !defined(NO_ASM) && !defined(NO_INLINE_ASM) |
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 | |
58964a49 RE |
169 | #else |
170 | #define ROTATE_l32(a,n) (((a)<<(n&0x1f))|(((a)&0xffffffff)>>(32-(n&0x1f)))) | |
171 | #define ROTATE_r32(a,n) (((a)<<(32-(n&0x1f)))|(((a)&0xffffffff)>>(n&0x1f))) | |
172 | #endif | |
173 | ||
174 | #define RC5_32_MASK 0xffffffffL | |
175 | ||
176 | #define RC5_16_P 0xB7E1 | |
177 | #define RC5_16_Q 0x9E37 | |
178 | #define RC5_32_P 0xB7E15163L | |
179 | #define RC5_32_Q 0x9E3779B9L | |
180 | #define RC5_64_P 0xB7E151628AED2A6BLL | |
181 | #define RC5_64_Q 0x9E3779B97F4A7C15LL | |
182 | ||
183 | #define E_RC5_32(a,b,s,n) \ | |
184 | a^=b; \ | |
185 | a=ROTATE_l32(a,b); \ | |
186 | a+=s[n]; \ | |
187 | a&=RC5_32_MASK; \ | |
188 | b^=a; \ | |
189 | b=ROTATE_l32(b,a); \ | |
190 | b+=s[n+1]; \ | |
191 | b&=RC5_32_MASK; | |
192 | ||
193 | #define D_RC5_32(a,b,s,n) \ | |
194 | b-=s[n+1]; \ | |
195 | b&=RC5_32_MASK; \ | |
196 | b=ROTATE_r32(b,a); \ | |
197 | b^=a; \ | |
198 | a-=s[n]; \ | |
199 | a&=RC5_32_MASK; \ | |
200 | a=ROTATE_r32(a,b); \ | |
201 | a^=b; | |
202 | ||
203 | ||
204 |