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84 lines
3.9 KiB
C
84 lines
3.9 KiB
C
/*
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* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (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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#ifndef HEADER_BF_LOCL_H
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# define HEADER_BF_LOCL_H
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# include <openssl/opensslconf.h>
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/* NOTE - c is not incremented as per n2l */
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# define n2ln(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)))) ; \
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/* fall thru */ \
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case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
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/* fall thru */ \
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case 6: l2|=((unsigned long)(*(--(c))))<<16; \
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/* fall thru */ \
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case 5: l2|=((unsigned long)(*(--(c))))<<24; \
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/* fall thru */ \
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case 4: l1 =((unsigned long)(*(--(c)))) ; \
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/* fall thru */ \
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case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
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/* fall thru */ \
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case 2: l1|=((unsigned long)(*(--(c))))<<16; \
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/* fall thru */ \
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case 1: l1|=((unsigned long)(*(--(c))))<<24; \
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} \
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}
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/* NOTE - c is not incremented as per l2n */
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# define l2nn(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) )&0xff); \
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/* fall thru */ \
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case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
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/* fall thru */ \
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case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
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/* fall thru */ \
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case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
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/* fall thru */ \
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case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
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/* fall thru */ \
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case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
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/* fall thru */ \
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case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
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/* fall thru */ \
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case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
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} \
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}
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# undef n2l
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# define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
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l|=((unsigned long)(*((c)++)))<<16L, \
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l|=((unsigned long)(*((c)++)))<< 8L, \
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l|=((unsigned long)(*((c)++))))
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# undef l2n
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# define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
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*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
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*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
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*((c)++)=(unsigned char)(((l) )&0xff))
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/*
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* This is actually a big endian algorithm, the most significant byte is used
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* to lookup array 0
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*/
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# define BF_ENC(LL,R,S,P) ( \
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LL^=P, \
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LL^=((( S[ ((R>>24)&0xff)] + \
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S[0x0100+((R>>16)&0xff)])^ \
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S[0x0200+((R>> 8)&0xff)])+ \
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S[0x0300+((R )&0xff)])&0xffffffffU \
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)
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#endif
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