test_src/cmacvs.c

   1 /* cmacvs.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        cmacvs.c
  21  * \author  Daniel Otte
  22  * \date    2010-02-02
  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 "blockcipher_descriptor.h"
  32 #include "bcal-basic.h"
  33 #include "bcal-cmac.h"
  34 #include "cmacvs.h"
  35 #include "string-extras.h"
  36 #include "cli.h"
  37
  38
  39 #ifdef DEBUG
  40 #  undef DEBUG
  41 #endif
  42
  43 #define DEBUG 0
  44
  45 #if DEBUG
  46 #  include "config.h"
  47 #  include <util/delay.h>
  48 #endif
  49
  50 bcdesc_t*  cmacvs_algo=NULL;
  51 bcdesc_t** cmacvs_algolist=NULL;
  52
  53 void cmacvs_listalgos(void){
  54         char option = 'a';
  55
  56         bcdesc_t* t;
  57         uint8_t i=0;
  58         cli_putstr("\r\nthe following algorithms are available:\r\n");
  59         while(option<='z' && (t=(bcdesc_t*)(cmacvs_algolist[i]))){
  60                 cli_putc('\t');
  61                 cli_putc((t==cmacvs_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 cmacvs_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(!cmacvs_algolist){
  76                         cli_putstr("\r\nERROR: cmacvs_algolist not set!");
  77                         return;
  78                 }
  79                 for(i=0; i<=option; ++i){
  80                         if((cmacvs_algolist[i])==NULL){
  81                                 cli_putstr("\r\nERROR: invalid selection!");
  82                                 return;
  83                         }
  84                 }
  85                 cmacvs_algo=(bcdesc_t*)(cmacvs_algolist[option]);
  86         } else { /* name specifyed */
  87                 bcdesc_t* t=NULL;
  88                 uint8_t i=0;
  89                 while((t=(bcdesc_t*)(cmacvs_algolist[i])) &&
  90                        strcasecmp(param, t->name))
  91                         ++i;
  92                 if(t){
  93                         cmacvs_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         bcal_cmac_ctx_t ctx;
 107         uint8_t* buffer;
 108         uint8_t  in_byte;
 109 } cmacvs_ctx_t;
 110
 111 static cmacvs_ctx_t cmacvs_ctx;
 112
 113 uint8_t buffer_add(char c){
 114         uint8_t v,t;
 115         if(cmacvs_ctx.buffer_idx==cmacvs_ctx.buffersize_B){
 116                 bcal_cmac_nextBlock(&(cmacvs_ctx.ctx), cmacvs_ctx.buffer);
 117                 ++cmacvs_ctx.blocks;
 118                 cmacvs_ctx.buffer_idx=0;
 119                 cmacvs_ctx.in_byte=0;
 120                 cli_putc('.');
 121                 memset(cmacvs_ctx.buffer, 0, cmacvs_ctx.buffersize_B);
 122         }
 123         if(c>='0' && c<='9'){
 124                 v=c-'0';
 125         }else{
 126                 c &= (uint8_t)~('a' ^ 'A');
 127                 if(c>='A' && c<='F'){
 128                         v=c-'A'+10;
 129                 }else{
 130                         return 1;
 131                 }
 132         }
 133         t=cmacvs_ctx.buffer[cmacvs_ctx.buffer_idx];
 134         if(cmacvs_ctx.in_byte){
 135                 t |= v;
 136                 cmacvs_ctx.buffer[cmacvs_ctx.buffer_idx]=t;
 137                 cmacvs_ctx.buffer_idx++;
 138                 cmacvs_ctx.in_byte = 0;
 139         }else{
 140                 t |= v<<4;
 141                 cmacvs_ctx.buffer[cmacvs_ctx.buffer_idx]=t;
 142                 cmacvs_ctx.in_byte = 1;
 143         }
 144         return 0;
 145 }
 146
 147 int32_t getValue(char* key){
 148         uint32_t val=0;
 149         char instr[21];
 150         char* str2;
 151         for(;;){
 152                 memset(instr, 0, 21);
 153                 cli_getsn(instr, 20);
 154                 str2 = strstrip(instr);
 155                 if(!strncasecmp(str2, key, strlen(key))){
 156                         while(*str2 && *str2!='=')
 157                                 str2++;
 158                         if(*str2=='='){
 159                                 do{
 160                                         str2++;
 161                                 }while(*str2 && !isdigit(*str2));
 162                                 val=(uint32_t)strtoul(str2, NULL, 10);
 163                                 return val;
 164                         }
 165                 } else {
 166                         if(!strncasecmp(str2, "EXIT", 4)){
 167                                 cli_putstr("\r\n got exit ...");
 168                                 return -1;
 169                         }
 170                 }
 171         }
 172         return -2;
 173 }
 174
 175 uint8_t getKey(void* key_buffer, uint8_t klen_B){
 176         char c;
 177         uint8_t v,i=0;
 178         memset(key_buffer, 0x00, klen_B);
 179         do{
 180                 c = cli_getc_cecho();
 181         }while((c|('a'^'A'))!='k');
 182         do{
 183                 c = cli_getc_cecho();
 184         }while((c|('a'^'A'))!='e');
 185         do{
 186                 c = cli_getc_cecho();
 187         }while((c|('a'^'A'))!='y');
 188         do{
 189                 c = cli_getc_cecho();
 190         }while(c!='=');
 191         klen_B *= 2;
 192         while(klen_B){
 193                 v = 0x10;
 194                 c = cli_getc_cecho();
 195                 if(c>='0' && c<='9'){
 196                         v = c-'0';
 197                 }else{
 198                         c |= 'A'^'a';
 199                         if(c>='a' && c<='f'){
 200                                 v= c-'a'+10;
 201                         }
 202                 }
 203                 if(v<0x10){
 204                         if((i&1)==0){
 205                                 v<<=4;
 206                         }
 207                         ((uint8_t*)key_buffer)[i/2] |= v;
 208                         ++i;
 209                         --klen_B;
 210                 }
 211         }
 212         return 0;
 213 }
 214
 215 uint8_t getMac(void* mac_buffer, uint8_t mlen_B){
 216         char c;
 217         uint8_t v,i=0;
 218         memset(mac_buffer, 0x00, mlen_B);
 219         do{
 220                 c = cli_getc_cecho();
 221         }while((c|('a'^'A'))!='m');
 222         do{
 223                 c = cli_getc_cecho();
 224         }while((c|('a'^'A'))!='a');
 225         do{
 226                 c = cli_getc_cecho();
 227         }while((c|('a'^'A'))!='c');
 228         do{
 229                 c = cli_getc_cecho();
 230         }while(c!='=');
 231         mlen_B *= 2;
 232         while(mlen_B){
 233                 v = 0x10;
 234                 c = cli_getc_cecho();
 235                 if(c>='0' && c<='9'){
 236                         v = c-'0';
 237                 }else{
 238                         c |= 'A'^'a';
 239                         if(c>='a' && c<='f'){
 240                                 v= c-'a'+10;
 241                         }
 242                 }
 243                 if(v<0x10){
 244                         if((i&1)==0){
 245                                 v<<=4;
 246                         }
 247                         ((uint8_t*)mac_buffer)[i/2] |= v;
 248                         ++i;
 249                         --mlen_B;
 250                 }
 251         }
 252         return 0;
 253 }
 254
 255 void cmacvs_test1(void){ /* Gen tests */
 256         int32_t klen, mlen, tlen;
 257         int32_t expect_input=0;
 258
 259         if(!cmacvs_algo){
 260                         cli_putstr("\r\nERROR: select algorithm first!");
 261                 return;
 262         }
 263         char c;
 264         cmacvs_ctx.buffersize_B=(cmacvs_algo->blocksize_b)/8;
 265         uint8_t tag[cmacvs_ctx.buffersize_B];
 266         uint8_t buffer[cmacvs_ctx.buffersize_B+5];
 267         cmacvs_ctx.buffer = buffer;
 268         cli_putstr("\r\nbuffer_size = 0x");
 269         cli_hexdump_rev(&(cmacvs_ctx.buffersize_B), 2);
 270         cli_putstr(" bytes");
 271         for(;;){
 272                 cmacvs_ctx.blocks = 0;
 273                 memset(buffer, 0, cmacvs_ctx.buffersize_B);
 274                 klen = getValue("Klen");
 275                 if(klen<0){
 276                         return;
 277                 }
 278                 mlen = getValue("Mlen");
 279                 if(mlen<0){
 280                         return;
 281                 }
 282                 tlen = getValue("Tlen");
 283                 if(tlen<0){
 284                         return;
 285                 }
 286                 uint8_t key_buffer[klen];
 287 #if DEBUG
 288                 cli_putstr("\r\nKLen == ");
 289                 cli_hexdump_rev(&klen, 4);
 290                 cli_putstr("\r\nMLen == ");
 291                 cli_hexdump_rev(&mlen, 4);
 292                 cli_putstr("\r\nTLen == ");
 293                 cli_hexdump_rev(&tlen, 4);
 294 #endif
 295                 getKey(key_buffer, klen);
 296                 if(mlen==0){
 297                         expect_input=2;
 298                 }else{
 299                         expect_input=mlen*2;
 300                 }
 301 #if DEBUG
 302                 cli_putstr("\r\nexpected_input == ");
 303                 cli_hexdump_rev(&expect_input, 4);
 304                 if(expect_input==0)
 305                         cli_putstr("\r\nexpected_input == 0 !!!");
 306 #endif
 307                 uint8_t ret;
 308 #if DEBUG
 309                 cli_putstr("\r\n CMAC init");
 310                 cli_putstr("\r\n (2) expected_input == ");
 311                 cli_hexdump_rev(&expect_input, 4);
 312 #endif
 313                 ret = bcal_cmac_init(cmacvs_algo, key_buffer, klen*8, &(cmacvs_ctx.ctx));
 314                 if(ret){
 315                         cli_putstr("\r\n bcal_cmac_init returned with: ");
 316                         cli_hexdump(&ret, 1);
 317                         return;
 318                 }
 319 #if DEBUG
 320                 cli_putstr("\r\n (3) expected_input == ");
 321                 cli_hexdump_rev(&expect_input, 4);
 322                 cli_putstr("\r\n");
 323 #endif
 324                 while((c=cli_getc_cecho())!='M' && c!='m'){
 325                         if(!isspace(c)){
 326                                 cli_putstr("\r\nERROR: wrong input (1) [0x");
 327                                 cli_hexdump(&c, 1);
 328                                 cli_putstr("]!\r\n");
 329                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 330                                 return;
 331                         }
 332                 }
 333                 if((c=cli_getc_cecho())!='s' && c!='S'){
 334                                 cli_putstr("\r\nERROR: wrong input (2)!\r\n");
 335                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 336                                 return;
 337                 }
 338                 if((c=cli_getc_cecho())!='g' && c!='G'){
 339                                 cli_putstr("\r\nERROR: wrong input (3)!\r\n");
 340                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 341                                 return;
 342                 }
 343                 while((c=cli_getc_cecho())!='='){
 344                         if(!isspace(c)){
 345                                 cli_putstr("\r\nERROR: wrong input (4)!\r\n");
 346                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 347                                 return;
 348                         }
 349                 }
 350 #if DEBUG
 351                 cli_putstr("\r\nparsing started");
 352 #endif
 353                 cmacvs_ctx.buffer_idx = 0;
 354                 cmacvs_ctx.in_byte    = 0;
 355                 cmacvs_ctx.blocks     = 0;
 356                 while(expect_input>0){
 357                         c=cli_getc_cecho();
 358 #if DEBUG
 359                         cli_putstr("\r\n\t(");
 360                         cli_hexdump_rev(&expect_input, 4);
 361                         cli_putstr(") ");
 362                         _delay_ms(500);
 363 #endif
 364                         if(buffer_add(c)==0){
 365                                 --expect_input;
 366                         }else{
 367                                 if(!isblank((uint16_t)c)){
 368                                         cli_putstr("\r\nERROR: wrong input (5) (");
 369                                         cli_putc(c);
 370                                         cli_putstr(")!\r\n");
 371                                         bcal_cmac_free(&(cmacvs_ctx.ctx));
 372                                         return;
 373                                 }
 374                         }
 375                 }
 376 #if DEBUG
 377                 cli_putstr("\r\nBuffer-A:");
 378                 cli_hexdump_block(buffer, cmacvs_ctx.buffersize_B, 5, 8);
 379
 380                 cli_putstr("\r\n starting finalisation");
 381                 cli_putstr("\r\n\tblocks     == ");
 382                 cli_hexdump_rev(&(cmacvs_ctx.blocks),4);
 383                 cli_putstr("\r\n\tbuffer_idx == ");
 384                 cli_hexdump_rev(&(cmacvs_ctx.buffer_idx),2);
 385                 cli_putstr("\r\n\tin_byte    == ");
 386                 cli_hexdump_rev(&(cmacvs_ctx.in_byte),1);
 387 //              _delay_ms(500);
 388
 389                 cli_putstr("\r\n starting last block");
 390                 cli_putstr("\r\n\tlength       == ");
 391                 cli_hexdump_rev(&mlen,4);
 392                 cli_putstr("\r\n\tbuffersize_B == ");
 393                 cli_hexdump_rev(&(cmacvs_ctx.buffersize_B),2);
 394                 uint16_t temp=(mlen-cmacvs_ctx.blocks*cmacvs_ctx.buffersize_B)*8;
 395                 cli_putstr("\r\n\t (temp)      == ");
 396                 cli_hexdump_rev(&temp,2);
 397 //              _delay_ms(500);
 398 #endif
 399                 uint16_t temp=(mlen-cmacvs_ctx.blocks*cmacvs_ctx.buffersize_B)*8;
 400                 bcal_cmac_lastBlock( &(cmacvs_ctx.ctx), buffer, /* be aware of freaking compilers!!! */
 401 //                                                      length-(cmacvs_ctx.blocks)*((cmacvs_ctx.buffersize_B)*8));
 402                                     temp );
 403 #if DEBUG
 404                 cli_putstr("\r\n starting ctx2cmac");
 405                 _delay_ms(500);
 406 #endif
 407                 bcal_cmac_ctx2mac(tag, tlen*8, &(cmacvs_ctx.ctx));
 408 #if DEBUG
 409                 cli_putstr("\r\n starting cmac free");
 410 #endif
 411                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 412                 cli_putstr("\r\n Mac = ");
 413                 cli_hexdump(tag, tlen);
 414
 415         }
 416 }
 417
 418
 419 void cmacvs_test2(void){ /* Ver tests */
 420         int32_t klen, mlen, tlen;
 421         int32_t expect_input=0;
 422
 423         if(!cmacvs_algo){
 424                         cli_putstr("\r\nERROR: select algorithm first!");
 425                 return;
 426         }
 427         char c;
 428         cmacvs_ctx.buffersize_B=(cmacvs_algo->blocksize_b)/8;
 429         uint8_t tag[cmacvs_ctx.buffersize_B];
 430         uint8_t tag_ref[cmacvs_ctx.buffersize_B];
 431         uint8_t buffer[cmacvs_ctx.buffersize_B+5];
 432         cmacvs_ctx.buffer = buffer;
 433         cli_putstr("\r\nbuffer_size = 0x");
 434         cli_hexdump_rev(&(cmacvs_ctx.buffersize_B), 2);
 435         cli_putstr(" bytes");
 436         for(;;){
 437                 cmacvs_ctx.blocks = 0;
 438                 memset(buffer, 0, cmacvs_ctx.buffersize_B);
 439                 klen = getValue("Klen");
 440                 if(klen<0){
 441                         return;
 442                 }
 443                 mlen = getValue("Mlen");
 444                 if(mlen<0){
 445                         return;
 446                 }
 447                 tlen = getValue("Tlen");
 448                 if(tlen<0){
 449                         return;
 450                 }
 451                 uint8_t key_buffer[klen];
 452 #if DEBUG
 453                 cli_putstr("\r\nKLen == ");
 454                 cli_hexdump_rev(&klen, 4);
 455                 cli_putstr("\r\nMLen == ");
 456                 cli_hexdump_rev(&mlen, 4);
 457                 cli_putstr("\r\nTLen == ");
 458                 cli_hexdump_rev(&tlen, 4);
 459 #endif
 460                 getKey(key_buffer, klen);
 461                 if(mlen==0){
 462                         expect_input=2;
 463                 }else{
 464                         expect_input=mlen*2;
 465                 }
 466 #if DEBUG
 467                 cli_putstr("\r\nexpected_input == ");
 468                 cli_hexdump_rev(&expect_input, 4);
 469                 if(expect_input==0)
 470                         cli_putstr("\r\nexpected_input == 0 !!!");
 471 #endif
 472                 uint8_t ret;
 473 #if DEBUG
 474                 cli_putstr("\r\n CMAC init");
 475                 cli_putstr("\r\n (2) expected_input == ");
 476                 cli_hexdump_rev(&expect_input, 4);
 477 #endif
 478                 ret = bcal_cmac_init(cmacvs_algo, key_buffer, klen*8, &(cmacvs_ctx.ctx));
 479                 if(ret){
 480                         cli_putstr("\r\n bcal_cmac_init returned with: ");
 481                         cli_hexdump(&ret, 1);
 482                         return;
 483                 }
 484 #if DEBUG
 485                 cli_putstr("\r\n (3) expected_input == ");
 486                 cli_hexdump_rev(&expect_input, 4);
 487                 cli_putstr("\r\n");
 488 #endif
 489                 while((c=cli_getc_cecho())!='M' && c!='m'){
 490                         if(!isspace(c)){
 491                                 cli_putstr("\r\nERROR: wrong input (1) [0x");
 492                                 cli_hexdump(&c, 1);
 493                                 cli_putstr("]!\r\n");
 494                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 495                                 return;
 496                         }
 497                 }
 498                 if((c=cli_getc_cecho())!='s' && c!='S'){
 499                                 cli_putstr("\r\nERROR: wrong input (2)!\r\n");
 500                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 501                                 return;
 502                 }
 503                 if((c=cli_getc_cecho())!='g' && c!='G'){
 504                                 cli_putstr("\r\nERROR: wrong input (3)!\r\n");
 505                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 506                                 return;
 507                 }
 508                 while((c=cli_getc_cecho())!='='){
 509                         if(!isspace(c)){
 510                                 cli_putstr("\r\nERROR: wrong input (4)!\r\n");
 511                                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 512                                 return;
 513                         }
 514                 }
 515 #if DEBUG
 516                 cli_putstr("\r\nparsing started");
 517 #endif
 518                 cmacvs_ctx.buffer_idx = 0;
 519                 cmacvs_ctx.in_byte    = 0;
 520                 cmacvs_ctx.blocks     = 0;
 521                 while(expect_input>0){
 522                         c=cli_getc_cecho();
 523 #if DEBUG
 524                         cli_putstr("\r\n\t(");
 525                         cli_hexdump_rev(&expect_input, 4);
 526                         cli_putstr(") ");
 527                         _delay_ms(500);
 528 #endif
 529                         if(buffer_add(c)==0){
 530                                 --expect_input;
 531                         }else{
 532                                 if(!isblank((uint16_t)c)){
 533                                         cli_putstr("\r\nERROR: wrong input (5) (");
 534                                         cli_putc(c);
 535                                         cli_putstr(")!\r\n");
 536                                         bcal_cmac_free(&(cmacvs_ctx.ctx));
 537                                         return;
 538                                 }
 539                         }
 540                 }
 541 #if DEBUG
 542                 cli_putstr("\r\nBuffer-A:");
 543                 cli_hexdump_block(buffer, cmacvs_ctx.buffersize_B, 5, 8);
 544
 545                 cli_putstr("\r\n starting finalisation");
 546                 cli_putstr("\r\n\tblocks     == ");
 547                 cli_hexdump_rev(&(cmacvs_ctx.blocks),4);
 548                 cli_putstr("\r\n\tbuffer_idx == ");
 549                 cli_hexdump_rev(&(cmacvs_ctx.buffer_idx),2);
 550                 cli_putstr("\r\n\tin_byte    == ");
 551                 cli_hexdump_rev(&(cmacvs_ctx.in_byte),1);
 552 //              _delay_ms(500);
 553
 554                 cli_putstr("\r\n starting last block");
 555                 cli_putstr("\r\n\tlength       == ");
 556                 cli_hexdump_rev(&mlen,4);
 557                 cli_putstr("\r\n\tbuffersize_B == ");
 558                 cli_hexdump_rev(&(cmacvs_ctx.buffersize_B),2);
 559                 uint16_t temp=(mlen-cmacvs_ctx.blocks*cmacvs_ctx.buffersize_B)*8;
 560                 cli_putstr("\r\n\t (temp)      == ");
 561                 cli_hexdump_rev(&temp,2);
 562 //              _delay_ms(500);
 563 #endif
 564                 uint16_t temp=(mlen-cmacvs_ctx.blocks*cmacvs_ctx.buffersize_B)*8;
 565                 bcal_cmac_lastBlock( &(cmacvs_ctx.ctx), buffer, /* be aware of freaking compilers!!! */
 566 //                                                      length-(cmacvs_ctx.blocks)*((cmacvs_ctx.buffersize_B)*8));
 567                                     temp );
 568 #if DEBUG
 569                 cli_putstr("\r\n starting ctx2cmac");
 570                 _delay_ms(500);
 571 #endif
 572                 bcal_cmac_ctx2mac(tag, tlen*8, &(cmacvs_ctx.ctx));
 573 #if DEBUG
 574                 cli_putstr("\r\n starting cmac free");
 575 #endif
 576                 bcal_cmac_free(&(cmacvs_ctx.ctx));
 577                 cli_putstr("\r\n Mac = ");
 578                 cli_hexdump(tag, tlen);
 579                 getMac(tag_ref, tlen);
 580                 if(memcmp(tag, tag_ref, tlen)){
 581                         cli_putstr("\r\n Result = F");
 582                 }else{
 583                         cli_putstr("\r\n Result = P");
 584                 }
 585         }
 586 }