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https://github.com/openssl/openssl.git
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126 lines
5.7 KiB
C
126 lines
5.7 KiB
C
/*
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* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdlib.h>
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#undef c2l
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#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
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l|=((unsigned long)(*((c)++)))<< 8L, \
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l|=((unsigned long)(*((c)++)))<<16L, \
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l|=((unsigned long)(*((c)++)))<<24L)
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/* NOTE - c is not incremented as per c2l */
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#undef c2ln
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#define c2ln(c,l1,l2,n) { \
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c+=n; \
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l1=l2=0; \
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switch (n) { \
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case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
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/* fall through */ \
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case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
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/* fall through */ \
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case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
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/* fall through */ \
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case 5: l2|=((unsigned long)(*(--(c)))); \
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/* fall through */ \
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case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
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/* fall through */ \
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case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
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/* fall through */ \
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case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
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/* fall through */ \
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case 1: l1|=((unsigned long)(*(--(c)))); \
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} \
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}
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#undef l2c
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#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
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*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
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*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
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*((c)++)=(unsigned char)(((l)>>24L)&0xff))
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/* NOTE - c is not incremented as per l2c */
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#undef l2cn
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#define l2cn(l1,l2,c,n) { \
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c+=n; \
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switch (n) { \
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case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
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/* fall through */ \
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case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
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/* fall through */ \
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case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
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/* fall through */ \
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case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
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/* fall through */ \
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case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
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/* fall through */ \
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case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
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/* fall through */ \
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case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
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/* fall through */ \
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case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
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} \
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}
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#if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER))
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# define ROTATE_l32(a,n) _lrotl(a,n)
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# define ROTATE_r32(a,n) _lrotr(a,n)
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#elif defined(__ICC)
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# define ROTATE_l32(a,n) _rotl(a,n)
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# define ROTATE_r32(a,n) _rotr(a,n)
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#elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
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# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
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# define ROTATE_l32(a,n) ({ register unsigned int ret; \
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asm ("roll %%cl,%0" \
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: "=r"(ret) \
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: "c"(n),"0"((unsigned int)(a)) \
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: "cc"); \
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ret; \
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})
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# define ROTATE_r32(a,n) ({ register unsigned int ret; \
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asm ("rorl %%cl,%0" \
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: "=r"(ret) \
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: "c"(n),"0"((unsigned int)(a)) \
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: "cc"); \
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ret; \
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})
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# endif
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#endif
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#ifndef ROTATE_l32
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# define ROTATE_l32(a,n) (((a)<<(n&0x1f))|(((a)&0xffffffff)>>((32-n)&0x1f)))
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#endif
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#ifndef ROTATE_r32
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# define ROTATE_r32(a,n) (((a)<<((32-n)&0x1f))|(((a)&0xffffffff)>>(n&0x1f)))
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#endif
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#define RC5_32_MASK 0xffffffffL
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#define RC5_32_P 0xB7E15163L
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#define RC5_32_Q 0x9E3779B9L
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#define E_RC5_32(a,b,s,n) \
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a^=b; \
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a=ROTATE_l32(a,b); \
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a+=s[n]; \
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a&=RC5_32_MASK; \
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b^=a; \
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b=ROTATE_l32(b,a); \
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b+=s[n+1]; \
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b&=RC5_32_MASK;
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#define D_RC5_32(a,b,s,n) \
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b-=s[n+1]; \
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b&=RC5_32_MASK; \
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b=ROTATE_r32(b,a); \
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b^=a; \
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a-=s[n]; \
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a&=RC5_32_MASK; \
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a=ROTATE_r32(a,b); \
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a^=b;
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