nessie_stream_test.c

   1 /* nessie_stream_test.c */
   2 /*
   3     This file is part of the Crypto-avr-lib/microcrypt-lib.
   4     Copyright (C) 2008  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  *
  21  * author: Daniel Otte
  22  * email:  daniel.otte@rub.de
  23  * license: GPLv3
  24  *
  25  * a suit for running the nessie-tests for streamciphers
  26  *
  27  * */
  28 #include <stdint.h>
  29 #include <string.h>
  30 #include "nessie_stream_test.h"
  31 #include "nessie_common.h"
  32 #include "uart.h"
  33
  34 nessie_stream_ctx_t nessie_stream_ctx;
  35
  36
  37 #define BLOCKSIZE_B 64
  38
  39 static
  40 void memxor(void* dest, void* src, uint8_t length){
  41         while(length--){
  42                 *((uint8_t*)dest) ^= *((uint8_t*)src);
  43                 dest = (uint8_t*)dest +1;
  44                 src  = (uint8_t*)src +1;
  45         }
  46 }
  47
  48
  49 static
  50 void nessie_gen_block(void* ctx, uint8_t* block){
  51         uint16_t i;
  52         for(i=0; i<BLOCKSIZE_B; ++i){
  53                 block[i] = nessie_stream_ctx.cipher_enc(ctx);
  54         }
  55 }
  56
  57 static
  58 void nessie_stream_enc(uint8_t* key){
  59         uint8_t ctx[nessie_stream_ctx.ctx_size_B];
  60         uint8_t buffer[BLOCKSIZE_B];
  61         uint8_t xorbuffer[BLOCKSIZE_B];
  62         uint8_t i;
  63
  64         memset(xorbuffer, 0, BLOCKSIZE_B);
  65
  66         nessie_print_item("key", key, (nessie_stream_ctx.keysize_b+7)/8);
  67
  68         nessie_stream_ctx.cipher_genctx(key, nessie_stream_ctx.keysize_b, ctx);
  69
  70         nessie_gen_block(ctx, buffer);
  71         memxor(xorbuffer, buffer, BLOCKSIZE_B);
  72         nessie_print_item("stream[0..63]", buffer, BLOCKSIZE_B);
  73
  74         for(i=0; i<((192-0)/BLOCKSIZE_B-1); ++i){
  75                 nessie_gen_block(ctx, buffer);
  76                 memxor(xorbuffer, buffer, BLOCKSIZE_B);
  77         }
  78
  79         nessie_gen_block(ctx, buffer);
  80         memxor(xorbuffer, buffer, BLOCKSIZE_B);
  81         nessie_print_item("stream[192..255]", buffer, BLOCKSIZE_B);
  82
  83         nessie_gen_block(ctx, buffer);
  84         memxor(xorbuffer, buffer, BLOCKSIZE_B);
  85         nessie_print_item("stream[256..319]", buffer, BLOCKSIZE_B);
  86
  87         for(i=0; i<((448-256)/BLOCKSIZE_B-1); ++i){
  88                 nessie_gen_block(ctx, buffer);
  89                 memxor(xorbuffer, buffer, BLOCKSIZE_B);
  90         }
  91
  92         nessie_gen_block(ctx, buffer);
  93         memxor(xorbuffer, buffer, BLOCKSIZE_B);
  94         nessie_print_item("stream[448..511]", buffer, BLOCKSIZE_B);
  95
  96         nessie_print_item("stream[0..511]xored", xorbuffer, BLOCKSIZE_B);
  97
  98 }
  99
 100
 101 static
 102 void nessie_stream_enc_large(uint8_t* key){
 103         uint8_t ctx[nessie_stream_ctx.ctx_size_B];
 104         uint8_t buffer[BLOCKSIZE_B];
 105         uint8_t xorbuffer[BLOCKSIZE_B];
 106         uint32_t i;
 107
 108         memset(xorbuffer, 0, BLOCKSIZE_B);
 109
 110         nessie_print_item("key", key, (nessie_stream_ctx.keysize_b+7)/8);
 111
 112         nessie_stream_ctx.cipher_genctx(key, nessie_stream_ctx.keysize_b, ctx);
 113
 114         nessie_gen_block(ctx, buffer);
 115         memxor(xorbuffer, buffer, BLOCKSIZE_B);
 116         nessie_print_item("stream[0..63]", buffer, BLOCKSIZE_B);
 117
 118         for(i=0; i<((65472-0)/BLOCKSIZE_B-1); ++i){
 119                 nessie_gen_block(ctx, buffer);
 120                 memxor(xorbuffer, buffer, BLOCKSIZE_B);
 121         }
 122
 123         nessie_gen_block(ctx, buffer);
 124         memxor(xorbuffer, buffer, BLOCKSIZE_B);
 125         nessie_print_item("stream[65472..65535]", buffer, BLOCKSIZE_B);
 126
 127         nessie_gen_block(ctx, buffer);
 128         memxor(xorbuffer, buffer, BLOCKSIZE_B);
 129         nessie_print_item("stream[65536..65599]", buffer, BLOCKSIZE_B);
 130
 131         for(i=0; i<((131008-65536)/BLOCKSIZE_B-1); ++i){
 132                 nessie_gen_block(ctx, buffer);
 133                 memxor(xorbuffer, buffer, BLOCKSIZE_B);
 134         }
 135
 136         nessie_gen_block(ctx, buffer);
 137         memxor(xorbuffer, buffer, BLOCKSIZE_B);
 138         nessie_print_item("stream[131008..131071]", buffer, BLOCKSIZE_B);
 139
 140         nessie_print_item("stream[0..131071]xored", xorbuffer, BLOCKSIZE_B);
 141
 142 }
 143
 144 void nessie_stream_run(void){
 145         uint16_t i;
 146         uint8_t set;
 147         uint8_t key[(nessie_stream_ctx.keysize_b+7)/8];
 148
 149         nessie_print_header(nessie_stream_ctx.name, nessie_stream_ctx.keysize_b,
 150                             0, 0, 0, nessie_stream_ctx.ivsize_b);
 151         /* test set 1 */
 152         set=1;
 153         nessie_print_setheader(set);
 154         for(i=0; i<nessie_stream_ctx.keysize_b; ++i){
 155                 nessie_print_set_vector(set, i);
 156                 memset(key, 0, (nessie_stream_ctx.keysize_b+7)/8);
 157                 key[i/8] |= 0x80>>(i%8);
 158                 nessie_stream_enc(key);
 159         }
 160         /* test set 2 */
 161         set=2;
 162         nessie_print_setheader(set);
 163         for(i=0; i<256; ++i){
 164                 nessie_print_set_vector(set, i);
 165                 memset(key, i, (nessie_stream_ctx.keysize_b+7)/8);
 166                 nessie_stream_enc(key);
 167         }
 168         /* test set 3 */
 169         set=3;
 170         nessie_print_setheader(set);
 171         for(i=0; i<256; ++i){
 172                 uint8_t j;
 173                 nessie_print_set_vector(set, i);
 174                 for(j=0; j<(nessie_stream_ctx.keysize_b+7)/8; ++j){
 175                         key[j]=(i+j)&0xff;
 176                 }
 177                 nessie_stream_enc(key);
 178         }
 179         /* test set 4 */
 180         set=4;
 181         nessie_print_setheader(set);
 182         for(i=0; i<4; ++i){
 183                 uint8_t j;
 184                 nessie_print_set_vector(set, i);
 185                 for(j=0; j<(nessie_stream_ctx.keysize_b+7)/8; ++j){
 186                         key[j]=(i*5+j*0x53)&0xff;
 187                 }
 188                 nessie_stream_enc_large(key);
 189         }
 190
 191         nessie_print_footer();
 192 }