Donatien Garnier / MiniTLS-GPL

A super trimmed down TLS stack, GPL licensed

Dependents:   MiniTLS-HTTPS-Example

MiniTLS - A super trimmed down TLS/SSL Library for embedded devices Author: Donatien Garnier Copyright (C) 2013-2014 AppNearMe Ltd

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

math/mul/fp_mul_comba_9.c

Committer:
MiniTLS
Date:
2014-06-06
Revision:
0:35aa5be3b78d

File content as of revision 0:35aa5be3b78d:

#define TFM_DEFINES
#include "fp_mul_comba.c"

#ifdef TFM_MUL9
void fp_mul_comba9(fp_int *A, fp_int *B, fp_int *C)
{
   fp_digit c0, c1, c2, at[18];

   memcpy(at, A->dp, 9 * sizeof(fp_digit));
   memcpy(at+9, B->dp, 9 * sizeof(fp_digit));
   COMBA_START;

   COMBA_CLEAR;
   /* 0 */
   MULADD(at[0], at[9]); 
   COMBA_STORE(C->dp[0]);
   /* 1 */
   COMBA_FORWARD;
   MULADD(at[0], at[10]);    MULADD(at[1], at[9]); 
   COMBA_STORE(C->dp[1]);
   /* 2 */
   COMBA_FORWARD;
   MULADD(at[0], at[11]);    MULADD(at[1], at[10]);    MULADD(at[2], at[9]); 
   COMBA_STORE(C->dp[2]);
   /* 3 */
   COMBA_FORWARD;
   MULADD(at[0], at[12]);    MULADD(at[1], at[11]);    MULADD(at[2], at[10]);    MULADD(at[3], at[9]); 
   COMBA_STORE(C->dp[3]);
   /* 4 */
   COMBA_FORWARD;
   MULADD(at[0], at[13]);    MULADD(at[1], at[12]);    MULADD(at[2], at[11]);    MULADD(at[3], at[10]);    MULADD(at[4], at[9]); 
   COMBA_STORE(C->dp[4]);
   /* 5 */
   COMBA_FORWARD;
   MULADD(at[0], at[14]);    MULADD(at[1], at[13]);    MULADD(at[2], at[12]);    MULADD(at[3], at[11]);    MULADD(at[4], at[10]);    MULADD(at[5], at[9]); 
   COMBA_STORE(C->dp[5]);
   /* 6 */
   COMBA_FORWARD;
   MULADD(at[0], at[15]);    MULADD(at[1], at[14]);    MULADD(at[2], at[13]);    MULADD(at[3], at[12]);    MULADD(at[4], at[11]);    MULADD(at[5], at[10]);    MULADD(at[6], at[9]); 
   COMBA_STORE(C->dp[6]);
   /* 7 */
   COMBA_FORWARD;
   MULADD(at[0], at[16]);    MULADD(at[1], at[15]);    MULADD(at[2], at[14]);    MULADD(at[3], at[13]);    MULADD(at[4], at[12]);    MULADD(at[5], at[11]);    MULADD(at[6], at[10]);    MULADD(at[7], at[9]); 
   COMBA_STORE(C->dp[7]);
   /* 8 */
   COMBA_FORWARD;
   MULADD(at[0], at[17]);    MULADD(at[1], at[16]);    MULADD(at[2], at[15]);    MULADD(at[3], at[14]);    MULADD(at[4], at[13]);    MULADD(at[5], at[12]);    MULADD(at[6], at[11]);    MULADD(at[7], at[10]);    MULADD(at[8], at[9]); 
   COMBA_STORE(C->dp[8]);
   /* 9 */
   COMBA_FORWARD;
   MULADD(at[1], at[17]);    MULADD(at[2], at[16]);    MULADD(at[3], at[15]);    MULADD(at[4], at[14]);    MULADD(at[5], at[13]);    MULADD(at[6], at[12]);    MULADD(at[7], at[11]);    MULADD(at[8], at[10]); 
   COMBA_STORE(C->dp[9]);
   /* 10 */
   COMBA_FORWARD;
   MULADD(at[2], at[17]);    MULADD(at[3], at[16]);    MULADD(at[4], at[15]);    MULADD(at[5], at[14]);    MULADD(at[6], at[13]);    MULADD(at[7], at[12]);    MULADD(at[8], at[11]); 
   COMBA_STORE(C->dp[10]);
   /* 11 */
   COMBA_FORWARD;
   MULADD(at[3], at[17]);    MULADD(at[4], at[16]);    MULADD(at[5], at[15]);    MULADD(at[6], at[14]);    MULADD(at[7], at[13]);    MULADD(at[8], at[12]); 
   COMBA_STORE(C->dp[11]);
   /* 12 */
   COMBA_FORWARD;
   MULADD(at[4], at[17]);    MULADD(at[5], at[16]);    MULADD(at[6], at[15]);    MULADD(at[7], at[14]);    MULADD(at[8], at[13]); 
   COMBA_STORE(C->dp[12]);
   /* 13 */
   COMBA_FORWARD;
   MULADD(at[5], at[17]);    MULADD(at[6], at[16]);    MULADD(at[7], at[15]);    MULADD(at[8], at[14]); 
   COMBA_STORE(C->dp[13]);
   /* 14 */
   COMBA_FORWARD;
   MULADD(at[6], at[17]);    MULADD(at[7], at[16]);    MULADD(at[8], at[15]); 
   COMBA_STORE(C->dp[14]);
   /* 15 */
   COMBA_FORWARD;
   MULADD(at[7], at[17]);    MULADD(at[8], at[16]); 
   COMBA_STORE(C->dp[15]);
   /* 16 */
   COMBA_FORWARD;
   MULADD(at[8], at[17]); 
   COMBA_STORE(C->dp[16]);
   COMBA_STORE2(C->dp[17]);
   C->used = 18;
   C->sign = A->sign ^ B->sign;
   fp_clamp(C);
   COMBA_FINI;
}
#endif