1 /* 2 * Copyright 1995-2023 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 #include <stdlib.h> 11 12 #undef c2l 13 #define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ 14 l|=((unsigned long)(*((c)++)))<< 8L, \ 15 l|=((unsigned long)(*((c)++)))<<16L, \ 16 l|=((unsigned long)(*((c)++)))<<24L) 17 18 /* NOTE - c is not incremented as per c2l */ 19 #undef c2ln 20 #define c2ln(c,l1,l2,n) { \ 21 c+=n; \ 22 l1=l2=0; \ 23 switch (n) { \ 24 case 8: l2 =((unsigned long)(*(--(c))))<<24L; \ 25 /* fall through */ \ 26 case 7: l2|=((unsigned long)(*(--(c))))<<16L; \ 27 /* fall through */ \ 28 case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \ 29 /* fall through */ \ 30 case 5: l2|=((unsigned long)(*(--(c)))); \ 31 /* fall through */ \ 32 case 4: l1 =((unsigned long)(*(--(c))))<<24L; \ 33 /* fall through */ \ 34 case 3: l1|=((unsigned long)(*(--(c))))<<16L; \ 35 /* fall through */ \ 36 case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \ 37 /* fall through */ \ 38 case 1: l1|=((unsigned long)(*(--(c)))); \ 39 } \ 40 } 41 42 #undef l2c 43 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 44 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 45 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 46 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 47 48 /* NOTE - c is not incremented as per l2c */ 49 #undef l2cn 50 #define l2cn(l1,l2,c,n) { \ 51 c+=n; \ 52 switch (n) { \ 53 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ 54 /* fall through */ \ 55 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ 56 /* fall through */ \ 57 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ 58 /* fall through */ \ 59 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 60 /* fall through */ \ 61 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ 62 /* fall through */ \ 63 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ 64 /* fall through */ \ 65 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ 66 /* fall through */ \ 67 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 68 } \ 69 } 70 71 #if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)) 72 # define ROTATE_l32(a,n) _lrotl(a,n) 73 # define ROTATE_r32(a,n) _lrotr(a,n) 74 #elif defined(__ICC) 75 # define ROTATE_l32(a,n) _rotl(a,n) 76 # define ROTATE_r32(a,n) _rotr(a,n) 77 #elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC) 78 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__) 79 # define ROTATE_l32(a,n) ({ register unsigned int ret; \ 80 asm ("roll %%cl,%0" \ 81 : "=r"(ret) \ 82 : "c"(n),"0"((unsigned int)(a)) \ 83 : "cc"); \ 84 ret; \ 85 }) 86 # define ROTATE_r32(a,n) ({ register unsigned int ret; \ 87 asm ("rorl %%cl,%0" \ 88 : "=r"(ret) \ 89 : "c"(n),"0"((unsigned int)(a)) \ 90 : "cc"); \ 91 ret; \ 92 }) 93 # endif 94 #endif 95 #ifndef ROTATE_l32 96 # define ROTATE_l32(a,n) (((a)<<(n&0x1f))|(((a)&0xffffffff)>>((32-n)&0x1f))) 97 #endif 98 #ifndef ROTATE_r32 99 # define ROTATE_r32(a,n) (((a)<<((32-n)&0x1f))|(((a)&0xffffffff)>>(n&0x1f))) 100 #endif 101 102 #define RC5_32_MASK 0xffffffffL 103 104 #define RC5_32_P 0xB7E15163L 105 #define RC5_32_Q 0x9E3779B9L 106 107 #define E_RC5_32(a,b,s,n) \ 108 a^=b; \ 109 a=ROTATE_l32(a,b); \ 110 a+=s[n]; \ 111 a&=RC5_32_MASK; \ 112 b^=a; \ 113 b=ROTATE_l32(b,a); \ 114 b+=s[n+1]; \ 115 b&=RC5_32_MASK; 116 117 #define D_RC5_32(a,b,s,n) \ 118 b-=s[n+1]; \ 119 b&=RC5_32_MASK; \ 120 b=ROTATE_r32(b,a); \ 121 b^=a; \ 122 a-=s[n]; \ 123 a&=RC5_32_MASK; \ 124 a=ROTATE_r32(a,b); \ 125 a^=b; 126
