release/src/router/libsodium/src/libsodium/crypto_stream/aes128ctr/portable/beforenm_aes128ctr.c

   1 /* Author: Peter Schwabe, ported from an assembly implementation by Emilia Käsper
   2  * Date: 2009-03-19
   3  * Public domain */
   4
   5 #include "api.h"
   6 #include "consts.h"
   7 #include "int128.h"
   8 #include "common.h"
   9
  10 int crypto_stream_beforenm(unsigned char *c, const unsigned char *k)
  11 {
  12
  13   /*
  14      int64 x0;
  15      int64 x1;
  16      int64 x2;
  17      int64 x3;
  18      int64 e;
  19      int64 q0;
  20      int64 q1;
  21      int64 q2;
  22      int64 q3;
  23      */
  24
  25   int128 xmm0;
  26   int128 xmm1;
  27   int128 xmm2;
  28   int128 xmm3;
  29   int128 xmm4;
  30   int128 xmm5;
  31   int128 xmm6;
  32   int128 xmm7;
  33   int128 xmm8;
  34   int128 xmm9;
  35   int128 xmm10;
  36   int128 xmm11;
  37   int128 xmm12;
  38   int128 xmm13;
  39   int128 xmm14;
  40   int128 xmm15;
  41   int128 t;
  42
  43   bitslicekey0(k, c)
  44
  45     keyexpbs1(xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15,c)
  46     keyexpbs(xmm0, xmm1, xmm4, xmm6, xmm3, xmm7, xmm2, xmm5, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm1);, 2,c)
  47     keyexpbs(xmm0, xmm1, xmm3, xmm2, xmm6, xmm5, xmm4, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm6);, 3,c)
  48     keyexpbs(xmm0, xmm1, xmm6, xmm4, xmm2, xmm7, xmm3, xmm5, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm3);, 4,c)
  49
  50     keyexpbs(xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm3);, 5,c)
  51     keyexpbs(xmm0, xmm1, xmm4, xmm6, xmm3, xmm7, xmm2, xmm5, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm5);, 6,c)
  52     keyexpbs(xmm0, xmm1, xmm3, xmm2, xmm6, xmm5, xmm4, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm3);, 7,c)
  53     keyexpbs(xmm0, xmm1, xmm6, xmm4, xmm2, xmm7, xmm3, xmm5, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm7);, 8,c)
  54
  55     keyexpbs(xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15, xor_rcon(&xmm0); xor_rcon(&xmm1); xor_rcon(&xmm6); xor_rcon(&xmm3);, 9,c)
  56     keyexpbs10(xmm0, xmm1, xmm4, xmm6, xmm3, xmm7, xmm2, xmm5, xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15,c)
  57
  58     return 0;
  59 }