test_src/shavs.c

   1 /* shavs.c */
   2 /*
   3     This file is part of the ARM-Crypto-Lib.
   4     Copyright (C) 2006-2010  Daniel Otte (daniel.otte@rub.de)
   5
   6     This program is free software: you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation, either version 3 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 /**
  20  * \file        shavs.c
  21  * \author  Daniel Otte
  22  * \date    2006-05-16
  23  * \license     GPLv3 or later
  24  *
  25  */
  26
  27 #include <stdint.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <ctype.h>
  31 #include "hashfunction_descriptor.h"
  32 #include "hfal-basic.h"
  33 #include "shavs.h"
  34 #include "string-extras.h"
  35 #include "cli.h"
  36
  37
  38 #ifdef DEBUG
  39 #  undef DEBUG
  40 #endif
  41
  42 #define DEBUG 0
  43
  44 #if DEBUG
  45 #include "uart_lowlevel.h"
  46 //#  include "config.h"
  47 //#  include <util/delay.h>
  48 #endif
  49
  50 hfdesc_t*  shavs_algo=NULL;
  51 hfdesc_t** shavs_algolist=NULL;
  52
  53 void shavs_listalgos(void){
  54         char option = 'a';
  55
  56         hfdesc_t* t;
  57         uint8_t i=0;
  58         cli_putstr("\r\nthe following algorithms are available:\r\n");
  59         while(option<='z' && (t=shavs_algolist[i])){
  60                 cli_putc('\t');
  61                 cli_putc((t==shavs_algo)?'*':' ');
  62                 cli_putc(option++);
  63                 cli_putstr(":\t");
  64                 cli_putstr(t->name);
  65                 cli_putstr("\r\n");
  66                 i++;
  67         }
  68 }
  69
  70 void shavs_setalgo(char* param){
  71         param = strstrip(param);
  72         if(param[1]=='\0'){ /* single letter specified */
  73                 uint8_t i,option = param[0]-'a';
  74
  75                 if(!shavs_algolist){
  76                         cli_putstr("\r\nERROR: shavs_algolist not set!");
  77                         return;
  78                 }
  79                 for(i=0; i<=option; ++i){
  80                         if((shavs_algolist[i])==NULL){
  81                                 cli_putstr("\r\nERROR: invalid selection!");
  82                                 return;
  83                         }
  84                 }
  85                 shavs_algo=(hfdesc_t*)(shavs_algolist[option]);
  86         } else { /* name specified */
  87                 hfdesc_t* t=NULL;
  88                 uint8_t i=0;
  89                 while((t=shavs_algolist[i]) && strcasecmp(param, t->name)){
  90                         ++i;
  91                 }
  92                 if(t){
  93                         shavs_algo=t;
  94                 }else{
  95                         cli_putstr("\r\nERROR: could not find \"");
  96                         cli_putstr(param);
  97                         cli_putstr("\"!");
  98                 }
  99         }
 100 }
 101
 102 typedef struct {
 103         uint16_t buffer_idx;
 104         uint16_t buffersize_B;
 105         uint32_t blocks;
 106         hfgen_ctx_t ctx;
 107         uint8_t* buffer;
 108         uint8_t  in_byte;
 109 } shavs_ctx_t;
 110
 111 static shavs_ctx_t shavs_ctx;
 112
 113 static
 114 uint8_t buffer_add(char c){
 115         uint8_t v,t;
 116         if(shavs_ctx.buffer_idx==shavs_ctx.buffersize_B){
 117                 hfal_hash_nextBlock(&(shavs_ctx.ctx), shavs_ctx.buffer);
 118                 ++shavs_ctx.blocks;
 119                 shavs_ctx.buffer_idx=0;
 120                 cli_putc('.');
 121         }
 122         if(c>='0' && c<='9'){
 123                 v=c-'0';
 124         }else{
 125                 c &= (uint8_t)~('a' ^ 'A');
 126                 if(c>='A' && c<='F'){
 127                         v=c-'A'+10;
 128                 }else{
 129                         return 1;
 130                 }
 131         }
 132         t=shavs_ctx.buffer[shavs_ctx.buffer_idx];
 133         if(shavs_ctx.in_byte){
 134                 t |= v;
 135                 shavs_ctx.buffer[shavs_ctx.buffer_idx] = t;
 136                 shavs_ctx.buffer_idx++;
 137                 shavs_ctx.in_byte = 0;
 138         }else{
 139                 t = v<<4;
 140                 shavs_ctx.buffer[shavs_ctx.buffer_idx] = t;
 141                 shavs_ctx.in_byte = 1;
 142         }
 143         return 0;
 144 }
 145
 146 static
 147 uint32_t my_strtoul(const char* str){
 148         uint32_t r=0;
 149         while(*str && (*str<'0' || *str>'9')){
 150                 str++;
 151         }
 152         if(!*str){
 153                 return 0;
 154         }
 155         while(*str && (*str>='0' && *str<='9')){
 156                 r *= 10;
 157                 r += *str-'0';
 158                 str++;
 159         }
 160         return r;
 161 }
 162
 163 int32_t getLength(void){
 164         uint32_t len=0;
 165         char lenstr[25];
 166         char* len2;
 167         for(;;){
 168                 memset(lenstr, 0, 21);
 169                 cli_getsn(lenstr, 20);
 170                 len2 = strstrip(lenstr);
 171                 if(!strncasecmp(len2, "LEN", 3)){
 172                         while(*len2 && *len2!='=')
 173                                 len2++;
 174                         if(*len2=='='){
 175                                 do{
 176                                         len2++;
 177                                 }while(*len2 && !isdigit((uint8_t)*len2));
 178                                 len = my_strtoul(len2);
 179                                 //len=(uint32_t)strtoul(len2, NULL, 10);
 180                                 return len;
 181                         }
 182                 } else {
 183                         if(!strncasecmp(len2, "EXIT", 4)){
 184                                 return -1;
 185                         }
 186                 }
 187         }
 188 }
 189
 190 void shavs_test1(void){ /* KAT tests */
 191         uint32_t length=0;
 192         int32_t expect_input=0;
 193
 194         if(!shavs_algo){
 195                         cli_putstr("\r\nERROR: select algorithm first!");
 196                 return;
 197         }
 198         char c;
 199         uint8_t diggest[shavs_algo->hashsize_b/8];
 200         shavs_ctx.buffersize_B=shavs_algo->blocksize_b/8;
 201         uint8_t buffer[shavs_ctx.buffersize_B+5];
 202         shavs_ctx.buffer = buffer;
 203         cli_putstr("\r\nbuffer_size = 0x");
 204         cli_hexdump_rev(&(shavs_ctx.buffersize_B), 2);
 205         cli_putstr(" bytes");
 206         for(;;){
 207                 shavs_ctx.blocks = 0;
 208                 memset(buffer, 0, shavs_ctx.buffersize_B);
 209                 length = getLength();
 210                 if((int32_t)length<0){
 211 #if DEBUG
 212                         cli_putstr("\r\n(x) Len == ");
 213                         cli_hexdump_rev(&length, 4);
 214                         uart_flush(0);
 215 #endif
 216                         return;
 217                 }
 218
 219 #if DEBUG
 220                 cli_putstr("\r\nLen == ");
 221                 cli_hexdump_rev(&length, 4);
 222                 uart_flush(0);
 223 #endif
 224                 if(length==0){
 225                         expect_input=2;
 226                 }else{
 227                         expect_input=((length + 7) >> 2) & (~1L);
 228                 }
 229 #if DEBUG
 230                 cli_putstr("\r\nexpected_input == ");
 231                 cli_hexdump_rev(&expect_input, 4);
 232                 if(expect_input==0)
 233                         cli_putstr("\r\nexpected_input == 0 !!!");
 234 #endif
 235                 shavs_ctx.buffer_idx = 0;
 236                 shavs_ctx.in_byte    = 0;
 237                 shavs_ctx.blocks     = 0;
 238                 uint8_t ret;
 239 #if DEBUG
 240                 cli_putstr("\r\n HFAL init");
 241                 cli_putstr("\r\n (2) expected_input == ");
 242                 cli_hexdump_rev(&expect_input, 4);
 243 #endif
 244                 ret = hfal_hash_init(shavs_algo, &(shavs_ctx.ctx));
 245                 if(ret){
 246                         cli_putstr("\r\n HFAL init returned with: ");
 247                         cli_hexdump(&ret, 1);
 248                         return;
 249                 }
 250 #if DEBUG
 251                 cli_putstr("\r\n (3) expected_input == ");
 252                 cli_hexdump_rev(&expect_input, 4);
 253                 cli_putstr("\r\n");
 254 #endif
 255                 while((c=cli_getc_cecho())!='M' && c!='m'){
 256                         if(!isblank((uint8_t)c)){
 257                                 cli_putstr("\r\nERROR: wrong input (1) [0x");
 258                                 cli_hexdump(&c, 1);
 259                                 cli_putstr("]!\r\n");
 260                                 hfal_hash_free(&(shavs_ctx.ctx));
 261                                 return;
 262                         }
 263                 }
 264                 if((c=cli_getc_cecho())!='s' && c!='S'){
 265                                 cli_putstr("\r\nERROR: wrong input (2)!\r\n");
 266                                 hfal_hash_free(&(shavs_ctx.ctx));
 267                                 return;
 268                 }
 269                 if((c=cli_getc_cecho())!='g' && c!='G'){
 270                                 cli_putstr("\r\nERROR: wrong input (3)!\r\n");
 271                                 hfal_hash_free(&(shavs_ctx.ctx));
 272                                 return;
 273                 }
 274                 while((c=cli_getc_cecho())!='='){
 275                         if(!isblank((uint8_t)c)){
 276                                 cli_putstr("\r\nERROR: wrong input (4)!\r\n");
 277                                 hfal_hash_free(&(shavs_ctx.ctx));
 278                                 return;
 279                         }
 280                 }
 281 #if DEBUG
 282                 cli_putstr("\r\nparsing started");
 283 #endif
 284                 shavs_ctx.buffer_idx = 0;
 285                 shavs_ctx.in_byte    = 0;
 286                 shavs_ctx.blocks     = 0;
 287                 while(expect_input>0){
 288                         c=cli_getc_cecho();
 289 #if DEBUG
 290                         cli_putstr("\r\n\t(");
 291                         cli_hexdump_rev(&expect_input, 4);
 292                         cli_putstr(") ");
 293 #endif
 294                         if(buffer_add(c)==0){
 295                                 --expect_input;
 296                         }else{
 297                                 if(!isblank((uint16_t)c)){
 298                                         cli_putstr("\r\nERROR: wrong input (5) (");
 299                                         cli_putc(c);
 300                                         cli_putstr(")!\r\n");
 301                                         hfal_hash_free(&(shavs_ctx.ctx));
 302                                         return;
 303                                 }
 304                         }
 305                 }
 306 #if DEBUG
 307                 cli_putstr("\r\nBuffer-A:");
 308                 cli_hexdump_block(buffer, shavs_ctx.buffersize_B, 5, 8);
 309
 310                 cli_putstr("\r\n starting finalization");
 311                 cli_putstr("\r\n\tblocks     == ");
 312                 cli_hexdump_rev(&(shavs_ctx.blocks),4);
 313                 cli_putstr("\r\n\tbuffer_idx == ");
 314                 cli_hexdump_rev(&(shavs_ctx.buffer_idx),2);
 315                 cli_putstr("\r\n\tin_byte    == ");
 316                 cli_hexdump_rev(&(shavs_ctx.in_byte),1);
 317
 318                 cli_putstr("\r\n starting last block");
 319                 cli_putstr("\r\n\tlength       == ");
 320                 cli_hexdump_rev(&length,4);
 321                 cli_putstr("\r\n\tbuffersize_B == ");
 322                 cli_hexdump_rev(&(shavs_ctx.buffersize_B),2);
 323                 uint16_t temp=length-(shavs_ctx.blocks)*((shavs_ctx.buffersize_B)*8);
 324                 cli_putstr("\r\n\t (temp)      == ");
 325                 cli_hexdump_rev(&temp,2);
 326 #else
 327                 uint16_t temp=length-(shavs_ctx.blocks)*((shavs_ctx.buffersize_B)*8);
 328 #endif
 329                 hfal_hash_lastBlock( &(shavs_ctx.ctx), buffer, /* be aware of freaking compilers!!! */
 330                                     temp );
 331 #if DEBUG
 332                 cli_putstr("\r\n starting ctx2hash");
 333 #endif
 334                 hfal_hash_ctx2hash(diggest, &(shavs_ctx.ctx));
 335 #if DEBUG
 336                 cli_putstr("\r\n starting hash free");
 337 #endif
 338                 hfal_hash_free(&(shavs_ctx.ctx));
 339                 cli_putstr("\r\n MD = ");
 340                 cli_hexdump(diggest, shavs_algo->hashsize_b/8);
 341
 342         }
 343 }
 344
 345 void shavs_test2(void){ /* Monte Carlo tests for SHA-1 & SHA-2 */
 346         uint16_t expected_input;
 347         uint16_t count;
 348         uint8_t v;
 349         uint8_t index=0;
 350         char c;
 351         if(!shavs_algo){
 352                         cli_putstr("\r\nERROR: select algorithm first!");
 353                 return;
 354         }
 355         uint8_t ml=shavs_algo->hashsize_b/8;
 356         uint8_t m[ml*4+8];
 357         for(;;){
 358                 while((c=cli_getc_cecho())!='S' && c!='s'){
 359                         if(!isblank((uint8_t)c)){
 360                                 cli_putstr("\r\nERROR: wrong input (1) [0x");
 361                                 cli_hexdump(&c, 1);
 362                                 cli_putstr("]!\r\n");
 363                                 return;
 364                         }
 365                 }
 366                 if((c=cli_getc_cecho())!='e' && c!='E'){
 367                                 cli_putstr("\r\nERROR: wrong input (2)!\r\n");
 368                                 return;
 369                 }
 370                 if((c=cli_getc_cecho())!='e' && c!='E'){
 371                                 cli_putstr("\r\nERROR: wrong input (3)!\r\n");
 372                                 return;
 373                 }
 374                 if((c=cli_getc_cecho())!='d' && c!='D'){
 375                                 cli_putstr("\r\nERROR: wrong input (4)!\r\n");
 376                                 return;
 377                 }
 378                 while((c=cli_getc_cecho())!='='){
 379                         if(!isblank((uint8_t)c)){
 380                                 cli_putstr("\r\nERROR: wrong input (5)!\r\n");
 381                                 return;
 382                         }
 383                 }
 384                 expected_input = ml*2;
 385                 memset(m+2*ml, 0, ml);
 386                 do{
 387                         v=0xff;
 388                         c=cli_getc_cecho();
 389                         if(c>='0' && c<='9'){
 390                                 v = c - '0';
 391                         }else{
 392                                 c |= 'A'^'a';
 393                                 if(c>='a' && c<='f'){
 394                                         v = c - 'a' +10;
 395                                 }
 396                         }
 397                         if(v<0x10){
 398                                 c=m[ml*2+index/2];
 399                                 if(index&1){
 400                                         c |= v;
 401                                 }else{
 402                                         c |=v<<4;
 403                                 }
 404                                 m[ml*2+index/2]=c;
 405                                 index++;
 406                                 expected_input--;
 407                         }
 408                 }while(expected_input);
 409                 /* so we have the seed */
 410                 cli_putstr("\r\nstarting processing");
 411                 uint16_t j;
 412                 for(count=0; count<100; ++count){
 413                         memcpy(m, m+ml*2, ml);
 414                         memcpy(m+ml, m+ml*2, ml);
 415                         for(j=0; j<1000; ++j){
 416                                 hfal_hash_mem(shavs_algo, m+ml*3, m, ml*3*8);
 417                                 memmove(m, m+ml, 3*ml);
 418                         }
 419                         cli_putstr("\r\n\r\nCOUNT = ");
 420                         if(count>=10){
 421                                 cli_putc(count/10+'0');
 422                         }
 423                         cli_putc(count%10+'0');
 424                         cli_putstr("\r\nMD = ");
 425                         cli_hexdump(m+ml*2, ml);
 426                 }
 427         }
 428 }
 429
 430 void shavs_test3(void){ /* Monte Carlo tests for SHA-3 */
 431         uint16_t expected_input;
 432         uint16_t count;
 433         uint8_t v;
 434         uint8_t index=0;
 435         char c;
 436         if(!shavs_algo){
 437                         cli_putstr("\r\nERROR: select algorithm first!");
 438                 return;
 439         }
 440         uint8_t ml=shavs_algo->hashsize_b/8;
 441         uint8_t m[ml+128];
 442         for(;;){
 443                 while((c=cli_getc_cecho())!='S' && c!='s'){
 444                         if(!isblank((uint8_t)c)){
 445                                 cli_putstr("\r\nERROR: wrong input (1) [0x");
 446                                 cli_hexdump(&c, 1);
 447                                 cli_putstr("]!\r\n");
 448                                 return;
 449                         }
 450                 }
 451                 if((c=cli_getc_cecho())!='e' && c!='E'){
 452                                 cli_putstr("\r\nERROR: wrong input (2)!\r\n");
 453                                 return;
 454                 }
 455                 if((c=cli_getc_cecho())!='e' && c!='E'){
 456                                 cli_putstr("\r\nERROR: wrong input (3)!\r\n");
 457                                 return;
 458                 }
 459                 if((c=cli_getc_cecho())!='d' && c!='D'){
 460                                 cli_putstr("\r\nERROR: wrong input (4)!\r\n");
 461                                 return;
 462                 }
 463                 while((c=cli_getc_cecho())!='='){
 464                         if(!isblank((uint8_t)c)){
 465                                 cli_putstr("\r\nERROR: wrong input (5)!\r\n");
 466                                 return;
 467                         }
 468                 }
 469                 expected_input = 1024/4;
 470                 memset(m+ml, 0, 1024/8);
 471                 do{
 472                         v=0xff;
 473                         c=cli_getc_cecho();
 474                         if(c>='0' && c<='9'){
 475                                 v = c - '0';
 476                         }else{
 477                                 c |= 'A'^'a';
 478                                 if(c>='a' && c<='f'){
 479                                         v = c - 'a' +10;
 480                                 }
 481                         }
 482                         if(v<0x10){
 483                                 c=m[ml+index/2];
 484                                 if(index&1){
 485                                         c |= v;
 486                                 }else{
 487                                         c |=v<<4;
 488                                 }
 489                                 m[ml+index/2]=c;
 490                                 index++;
 491                                 expected_input--;
 492                         }
 493                 }while(expected_input);
 494                 /* so we have the seed */
 495                 cli_putstr("\r\nstarting processing");
 496                 uint16_t j;
 497                 for(count=0; count<100; ++count){
 498                         for(j=0; j<1000; ++j){
 499                                 hfal_hash_mem(shavs_algo, m, m+ml, 1024);
 500                                 memmove(m+ml, m, 1024/8);
 501                         }
 502                         cli_putstr("\r\n\r\nj = ");
 503                         if(count>=10){
 504                                 cli_putc(count/10+'0');
 505                         }
 506                         cli_putc(count%10+'0');
 507                         cli_putstr("\r\nMD = ");
 508                         cli_hexdump(m+ml, ml);
 509
 510                 }
 511         }
 512 }