| 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdlib.h>
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| 11 |
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| 12 | #undef c2l
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| 13 | #define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
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| 14 | l|=((unsigned long)(*((c)++)))<< 8L, \
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| 15 | l|=((unsigned long)(*((c)++)))<<16L, \
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| 16 | l|=((unsigned long)(*((c)++)))<<24L)
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| 17 |
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| 18 | /* NOTE - c is not incremented as per c2l */
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| 19 | #undef c2ln
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| 20 | #define c2ln(c,l1,l2,n) { \
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| 21 | c+=n; \
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| 22 | l1=l2=0; \
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| 23 | switch (n) { \
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| 24 | case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
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| 25 | /* fall thru */ \
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| 26 | case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
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| 27 | /* fall thru */ \
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| 28 | case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
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| 29 | /* fall thru */ \
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| 30 | case 5: l2|=((unsigned long)(*(--(c)))); \
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| 31 | /* fall thru */ \
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| 32 | case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
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| 33 | /* fall thru */ \
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| 34 | case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
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| 35 | /* fall thru */ \
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| 36 | case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
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| 37 | /* fall thru */ \
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| 38 | case 1: l1|=((unsigned long)(*(--(c)))); \
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| 39 | } \
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| 40 | }
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| 41 |
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| 42 | #undef l2c
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| 43 | #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
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| 44 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
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| 45 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
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| 46 | *((c)++)=(unsigned char)(((l)>>24L)&0xff))
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| 47 |
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| 48 | /* NOTE - c is not incremented as per l2c */
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| 49 | #undef l2cn
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| 50 | #define l2cn(l1,l2,c,n) { \
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| 51 | c+=n; \
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| 52 | switch (n) { \
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| 53 | case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
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| 54 | /* fall thru */ \
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| 55 | case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
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| 56 | /* fall thru */ \
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| 57 | case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
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| 58 | /* fall thru */ \
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| 59 | case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
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| 60 | /* fall thru */ \
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| 61 | case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
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| 62 | /* fall thru */ \
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| 63 | case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
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| 64 | /* fall thru */ \
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| 65 | case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
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| 66 | /* fall thru */ \
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| 67 | case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
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| 68 | } \
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| 69 | }
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| 70 |
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| 71 | /* NOTE - c is not incremented as per n2l */
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| 72 | #define n2ln(c,l1,l2,n) { \
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| 73 | c+=n; \
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| 74 | l1=l2=0; \
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| 75 | switch (n) { \
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| 76 | case 8: l2 =((unsigned long)(*(--(c)))) ; \
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| 77 | /* fall thru */ \
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| 78 | case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
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| 79 | /* fall thru */ \
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| 80 | case 6: l2|=((unsigned long)(*(--(c))))<<16; \
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| 81 | /* fall thru */ \
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| 82 | case 5: l2|=((unsigned long)(*(--(c))))<<24; \
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| 83 | /* fall thru */ \
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| 84 | case 4: l1 =((unsigned long)(*(--(c)))) ; \
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| 85 | /* fall thru */ \
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| 86 | case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
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| 87 | /* fall thru */ \
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| 88 | case 2: l1|=((unsigned long)(*(--(c))))<<16; \
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| 89 | /* fall thru */ \
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| 90 | case 1: l1|=((unsigned long)(*(--(c))))<<24; \
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| 91 | } \
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| 92 | }
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| 93 |
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| 94 | /* NOTE - c is not incremented as per l2n */
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| 95 | #define l2nn(l1,l2,c,n) { \
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| 96 | c+=n; \
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| 97 | switch (n) { \
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| 98 | case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
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| 99 | /* fall thru */ \
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| 100 | case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
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| 101 | /* fall thru */ \
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| 102 | case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
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| 103 | /* fall thru */ \
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| 104 | case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
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| 105 | /* fall thru */ \
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| 106 | case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
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| 107 | /* fall thru */ \
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| 108 | case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
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| 109 | /* fall thru */ \
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| 110 | case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
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| 111 | /* fall thru */ \
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| 112 | case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
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| 113 | } \
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| 114 | }
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| 115 |
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| 116 | #undef n2l
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| 117 | #define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
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| 118 | l|=((unsigned long)(*((c)++)))<<16L, \
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| 119 | l|=((unsigned long)(*((c)++)))<< 8L, \
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| 120 | l|=((unsigned long)(*((c)++))))
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| 121 |
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| 122 | #undef l2n
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| 123 | #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
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| 124 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
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| 125 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
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| 126 | *((c)++)=(unsigned char)(((l) )&0xff))
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| 127 |
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| 128 | #if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER))
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| 129 | # define ROTATE_l32(a,n) _lrotl(a,n)
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| 130 | # define ROTATE_r32(a,n) _lrotr(a,n)
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| 131 | #elif defined(__ICC)
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| 132 | # define ROTATE_l32(a,n) _rotl(a,n)
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| 133 | # define ROTATE_r32(a,n) _rotr(a,n)
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| 134 | #elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
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| 135 | # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
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| 136 | # define ROTATE_l32(a,n) ({ register unsigned int ret; \
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| 137 | asm ("roll %%cl,%0" \
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| 138 | : "=r"(ret) \
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| 139 | : "c"(n),"0"((unsigned int)(a)) \
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| 140 | : "cc"); \
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| 141 | ret; \
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| 142 | })
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| 143 | # define ROTATE_r32(a,n) ({ register unsigned int ret; \
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| 144 | asm ("rorl %%cl,%0" \
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| 145 | : "=r"(ret) \
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| 146 | : "c"(n),"0"((unsigned int)(a)) \
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| 147 | : "cc"); \
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| 148 | ret; \
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| 149 | })
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| 150 | # endif
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| 151 | #endif
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| 152 | #ifndef ROTATE_l32
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| 153 | # define ROTATE_l32(a,n) (((a)<<(n&0x1f))|(((a)&0xffffffff)>>((32-n)&0x1f)))
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| 154 | #endif
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| 155 | #ifndef ROTATE_r32
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| 156 | # define ROTATE_r32(a,n) (((a)<<((32-n)&0x1f))|(((a)&0xffffffff)>>(n&0x1f)))
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| 157 | #endif
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| 158 |
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| 159 | #define RC5_32_MASK 0xffffffffL
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| 160 |
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| 161 | #define RC5_16_P 0xB7E1
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| 162 | #define RC5_16_Q 0x9E37
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| 163 | #define RC5_32_P 0xB7E15163L
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| 164 | #define RC5_32_Q 0x9E3779B9L
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| 165 | #define RC5_64_P 0xB7E151628AED2A6BLL
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| 166 | #define RC5_64_Q 0x9E3779B97F4A7C15LL
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| 167 |
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| 168 | #define E_RC5_32(a,b,s,n) \
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| 169 | a^=b; \
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| 170 | a=ROTATE_l32(a,b); \
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| 171 | a+=s[n]; \
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| 172 | a&=RC5_32_MASK; \
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| 173 | b^=a; \
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| 174 | b=ROTATE_l32(b,a); \
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| 175 | b+=s[n+1]; \
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| 176 | b&=RC5_32_MASK;
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| 177 |
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| 178 | #define D_RC5_32(a,b,s,n) \
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| 179 | b-=s[n+1]; \
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| 180 | b&=RC5_32_MASK; \
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| 181 | b=ROTATE_r32(b,a); \
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| 182 | b^=a; \
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| 183 | a-=s[n]; \
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| 184 | a&=RC5_32_MASK; \
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| 185 | a=ROTATE_r32(a,b); \
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| 186 | a^=b;
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