[331] | 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 OpenSSL license (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 | #ifndef HEADER_BF_LOCL_H
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| 11 | # define HEADER_BF_LOCL_H
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| 12 | # include <openssl/opensslconf.h>
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| 13 |
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| 14 | /* NOTE - c is not incremented as per n2l */
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| 15 | # define n2ln(c,l1,l2,n) { \
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| 16 | c+=n; \
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| 17 | l1=l2=0; \
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| 18 | switch (n) { \
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| 19 | case 8: l2 =((unsigned long)(*(--(c)))) ; \
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| 20 | case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
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| 21 | case 6: l2|=((unsigned long)(*(--(c))))<<16; \
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| 22 | case 5: l2|=((unsigned long)(*(--(c))))<<24; \
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| 23 | case 4: l1 =((unsigned long)(*(--(c)))) ; \
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| 24 | case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
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| 25 | case 2: l1|=((unsigned long)(*(--(c))))<<16; \
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| 26 | case 1: l1|=((unsigned long)(*(--(c))))<<24; \
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| 27 | } \
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| 28 | }
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| 29 |
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| 30 | /* NOTE - c is not incremented as per l2n */
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| 31 | # define l2nn(l1,l2,c,n) { \
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| 32 | c+=n; \
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| 33 | switch (n) { \
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| 34 | case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
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| 35 | case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
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| 36 | case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
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| 37 | case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
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| 38 | case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
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| 39 | case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
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| 40 | case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
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| 41 | case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
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| 42 | } \
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| 43 | }
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| 44 |
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| 45 | # undef n2l
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| 46 | # define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
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| 47 | l|=((unsigned long)(*((c)++)))<<16L, \
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| 48 | l|=((unsigned long)(*((c)++)))<< 8L, \
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| 49 | l|=((unsigned long)(*((c)++))))
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| 50 |
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| 51 | # undef l2n
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| 52 | # define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
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| 53 | *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
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| 54 | *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
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| 55 | *((c)++)=(unsigned char)(((l) )&0xff))
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| 56 |
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| 57 | /*
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| 58 | * This is actually a big endian algorithm, the most significant byte is used
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| 59 | * to lookup array 0
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| 60 | */
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| 61 |
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| 62 | # define BF_ENC(LL,R,S,P) ( \
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| 63 | LL^=P, \
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| 64 | LL^=((( S[ ((R>>24)&0xff)] + \
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| 65 | S[0x0100+((R>>16)&0xff)])^ \
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| 66 | S[0x0200+((R>> 8)&0xff)])+ \
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| 67 | S[0x0300+((R )&0xff)])&0xffffffffU \
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| 68 | )
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| 69 |
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| 70 | #endif
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