mirror of
https://github.com/rvtr/TwlIPL.git
synced 2025-10-31 06:01:12 -04:00
60f18e5554
git-svn-id: file:///Users/lillianskinner/Downloads/platinum/twl/TwlIPL/trunk@1 b08762b0-b915-fc4b-9d8c-17b2551a87ff
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/* $Id$ */
|
|
/*
|
|
* Copyright (C) 1998-2003 RSA Security Inc. All rights reserved.
|
|
*
|
|
* This work contains proprietary information of RSA Security.
|
|
* Distribution is limited to authorized licensees of RSA
|
|
* Security. Any unauthorized reproduction, distribution or
|
|
* modification of this work is strictly prohibited.
|
|
*/
|
|
|
|
/**
|
|
* @file aes_e.c
|
|
* \brief Large code size (thus fast) AES Encryption
|
|
*/
|
|
|
|
#ifndef NO_AES
|
|
|
|
#include "aes.h"
|
|
|
|
/* Include the Large aes_submix tables */
|
|
#include "aes_e.h"
|
|
|
|
/* AES ECB Encryption of 1 x 128 bit Block */
|
|
void AES_encrypt(AES_KEY *ctx, AES_INT4 *data)
|
|
{
|
|
int r;
|
|
int rounds;
|
|
AES_INT4 *k;
|
|
AES_INT4 o0,o1,o2,o3;
|
|
AES_INT4 tmp0,tmp1,tmp2,tmp3;
|
|
|
|
rounds=ctx->rounds;
|
|
k= (AES_INT4 *)ctx->ks;
|
|
|
|
/* Encrypt one block.
|
|
*/
|
|
tmp0=data[0];
|
|
tmp1=data[1];
|
|
tmp2=data[2];
|
|
tmp3=data[3];
|
|
/*printf("K %08X %08X %08X %08X\n",tmp0,tmp1,tmp2,tmp3);
|
|
printf("KS %08X %08X %08X %08X\n",k[0],k[1],k[2],k[3]); */
|
|
tmp0^=k[0];
|
|
tmp1^=k[1];
|
|
tmp2^=k[2];
|
|
tmp3^=k[3];
|
|
k+=4;
|
|
|
|
for(r = 1; r < rounds; r++)
|
|
{
|
|
/*printf("%2d %08X %08X %08X %08X\n",r,tmp0,tmp1,tmp2,tmp3); */
|
|
o0 = aes_submix[3][(tmp3 )&0xff]^
|
|
aes_submix[2][(tmp2>> 8)&0xff]^
|
|
aes_submix[1][(tmp1>>16)&0xff]^
|
|
aes_submix[0][(tmp0>>24)&0xff];
|
|
|
|
o1 = aes_submix[3][(tmp0 )&0xff]^
|
|
aes_submix[2][(tmp3>> 8)&0xff]^
|
|
aes_submix[1][(tmp2>>16)&0xff]^
|
|
aes_submix[0][(tmp1>>24)&0xff];
|
|
|
|
o2 =
|
|
aes_submix[3][(tmp1 )&0xff]^
|
|
aes_submix[2][(tmp0>> 8)&0xff]^
|
|
aes_submix[1][(tmp3>>16)&0xff]^
|
|
aes_submix[0][(tmp2>>24)&0xff];
|
|
|
|
o3 =
|
|
aes_submix[3][(tmp2 )&0xff]^
|
|
aes_submix[2][(tmp1>> 8)&0xff]^
|
|
aes_submix[1][(tmp0>>16)&0xff]^
|
|
aes_submix[0][(tmp3>>24)&0xff];
|
|
|
|
/*
|
|
printf(" %08X %08X %08X %08X\n",o0,o1,o2,o3);
|
|
printf("KS %08X %08X %08X %08X\n",k[0],k[1],k[2],k[3]); */
|
|
tmp0=o0^k[0];
|
|
tmp1=o1^k[1];
|
|
tmp2=o2^k[2];
|
|
tmp3=o3^k[3];
|
|
k+=4;
|
|
}
|
|
/*printf("O %08X %08X %08X %08X\n",o0,o1,o2,o3); */
|
|
o0 = (aes_submix[0][(tmp3 )&0xff]>> 8)&0xFF;
|
|
o1 = (aes_submix[0][(tmp0 )&0xff]>> 8)&0xFF;
|
|
o2 = (aes_submix[0][(tmp1 )&0xff]>> 8)&0xFF;
|
|
o3 = (aes_submix[0][(tmp2 )&0xff]>> 8)&0xFF;
|
|
|
|
o0|= (aes_submix[0][(tmp2>> 8)&0xff] )&0xFF00;
|
|
o1|= (aes_submix[0][(tmp3>> 8)&0xff] )&0xFF00;
|
|
o2|= (aes_submix[0][(tmp0>> 8)&0xff] )&0xFF00;
|
|
o3|= (aes_submix[0][(tmp1>> 8)&0xff] )&0xFF00;
|
|
|
|
o0|= (aes_submix[0][(tmp1>>16)&0xff]<< 8)&0xFF0000;
|
|
o1|= (aes_submix[0][(tmp2>>16)&0xff]<< 8)&0xFF0000;
|
|
o2|= (aes_submix[0][(tmp3>>16)&0xff]<< 8)&0xFF0000;
|
|
o3|= (aes_submix[0][(tmp0>>16)&0xff]<< 8)&0xFF0000;
|
|
|
|
o0|= (aes_submix[0][(tmp0>>24) ]<<16)&0xFF000000;
|
|
o1|= (aes_submix[0][(tmp1>>24) ]<<16)&0xFF000000;
|
|
o2|= (aes_submix[0][(tmp2>>24) ]<<16)&0xFF000000;
|
|
o3|= (aes_submix[0][(tmp3>>24) ]<<16)&0xFF000000;
|
|
/*printf("P %08X %08X %08X %08X\n",o0,o1,o2,o3); */
|
|
o0^=k[0];
|
|
o1^=k[1];
|
|
o2^=k[2];
|
|
o3^=k[3];
|
|
/*printf("Q %08X %08X %08X %08X\n",o0,o1,o2,o3); */
|
|
data[0]= o0;
|
|
data[1]= o1;
|
|
data[2]= o2;
|
|
data[3]= o3;
|
|
}
|
|
|
|
#endif /* NO_AES */
|