crypto/rc2/rc2_locl.h

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 #undef c2l
  11 #define c2l(c,l)        (l =((unsigned long)(*((c)++)))    , \
  12                          l|=((unsigned long)(*((c)++)))<< 8L, \
  13                          l|=((unsigned long)(*((c)++)))<<16L, \
  14                          l|=((unsigned long)(*((c)++)))<<24L)
  15
  16 /* NOTE - c is not incremented as per c2l */
  17 #undef c2ln
  18 #define c2ln(c,l1,l2,n) { \
  19                         c+=n; \
  20                         l1=l2=0; \
  21                         switch (n) { \
  22                         case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
  23                         case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
  24                         case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
  25                         case 5: l2|=((unsigned long)(*(--(c))));     \
  26                         case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
  27                         case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
  28                         case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
  29                         case 1: l1|=((unsigned long)(*(--(c))));     \
  30                                 } \
  31                         }
  32
  33 #undef l2c
  34 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)     )&0xff), \
  35                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
  36                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
  37                          *((c)++)=(unsigned char)(((l)>>24L)&0xff))
  38
  39 /* NOTE - c is not incremented as per l2c */
  40 #undef l2cn
  41 #define l2cn(l1,l2,c,n) { \
  42                         c+=n; \
  43                         switch (n) { \
  44                         case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
  45                         case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
  46                         case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
  47                         case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
  48                         case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
  49                         case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
  50                         case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
  51                         case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
  52                                 } \
  53                         }
  54
  55 /* NOTE - c is not incremented as per n2l */
  56 #define n2ln(c,l1,l2,n) { \
  57                         c+=n; \
  58                         l1=l2=0; \
  59                         switch (n) { \
  60                         case 8: l2 =((unsigned long)(*(--(c))))    ; \
  61                         case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
  62                         case 6: l2|=((unsigned long)(*(--(c))))<<16; \
  63                         case 5: l2|=((unsigned long)(*(--(c))))<<24; \
  64                         case 4: l1 =((unsigned long)(*(--(c))))    ; \
  65                         case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
  66                         case 2: l1|=((unsigned long)(*(--(c))))<<16; \
  67                         case 1: l1|=((unsigned long)(*(--(c))))<<24; \
  68                                 } \
  69                         }
  70
  71 /* NOTE - c is not incremented as per l2n */
  72 #define l2nn(l1,l2,c,n) { \
  73                         c+=n; \
  74                         switch (n) { \
  75                         case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
  76                         case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
  77                         case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
  78                         case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
  79                         case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
  80                         case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
  81                         case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
  82                         case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
  83                                 } \
  84                         }
  85
  86 #undef n2l
  87 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \
  88                          l|=((unsigned long)(*((c)++)))<<16L, \
  89                          l|=((unsigned long)(*((c)++)))<< 8L, \
  90                          l|=((unsigned long)(*((c)++))))
  91
  92 #undef l2n
  93 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
  94                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
  95                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
  96                          *((c)++)=(unsigned char)(((l)     )&0xff))
  97
  98 #define C_RC2(n) \
  99         t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff; \
 100         x0=(t<<1)|(t>>15); \
 101         t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff; \
 102         x1=(t<<2)|(t>>14); \
 103         t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff; \
 104         x2=(t<<3)|(t>>13); \
 105         t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff; \
 106         x3=(t<<5)|(t>>11);