nessie_common.c

   1 /* nessie_common.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  * common function for nessie-tests
  26  *
  27  * */
  28
  29 #include <string.h>
  30 #include <stdint.h>
  31 #include <avr/pgmspace.h>
  32 #include <stdlib.h> /* utoa() */
  33 #include "uart.h"
  34
  35 void nessie_print_block(uint8_t* block, uint16_t blocksize_bit){
  36         char tab [] = {'0', '1', '2', '3',
  37                                    '4', '5', '6', '7',
  38                                    '8', '9', 'A', 'B',
  39                                    'C', 'D', 'E', 'F'};
  40         uint16_t i;
  41         for(i=0; i<(blocksize_bit+7)/8; ++i){
  42                 uart_putc(tab[(block[i])>>4]);
  43                 uart_putc(tab[(block[i])&0xf]);
  44         }
  45 }
  46
  47 #define SPACES 31
  48 #define BYTESPERLINE 16
  49
  50 void nessie_print_item(char* name, uint8_t* buffer, uint16_t size_B){
  51         uint8_t name_len;
  52         uint8_t i;
  53         name_len=strlen(name);
  54         if(name_len>SPACES-1){
  55                 uart_putstr_P(PSTR("\r\n!!! formatting error !!!\r\n"));
  56                 return;
  57         }
  58         uart_putstr_P(PSTR("\r\n"));
  59         for(i=0; i<SPACES-name_len-1; ++i){
  60                 uart_putc(' ');
  61         }
  62         uart_putstr(name);
  63         uart_putc('=');
  64         /* now the data printing begins */
  65         if(size_B<=BYTESPERLINE){
  66                 /* one line seems sufficient */
  67                 nessie_print_block(buffer, size_B*8);
  68         } else {
  69                 /* we need more lines */
  70                 nessie_print_block(buffer, BYTESPERLINE*8); /* first line */
  71                 int16_t toprint = size_B - BYTESPERLINE;
  72                 buffer += BYTESPERLINE;
  73                 while(toprint > 0){
  74                         uart_putstr_P(PSTR("\r\n"));
  75                         for(i=0; i<SPACES; ++i){
  76                                 uart_putc(' ');
  77                         }
  78                         nessie_print_block(buffer, ((toprint>BYTESPERLINE)?BYTESPERLINE:toprint)*8);
  79                         buffer  += BYTESPERLINE;
  80                         toprint -= BYTESPERLINE;
  81                 }
  82         }
  83 }
  84
  85
  86 void nessie_print_set_vector(uint8_t set, uint16_t vector){
  87         uart_putstr_P(PSTR("\r\n\r\nSet "));
  88         uart_putc('0'+set%10);
  89         uart_putstr_P(PSTR(", vector#"));
  90         uart_putc((vector<100)?' ':'0'+vector/100);
  91         uart_putc((vector<10 )?' ':'0'+(vector/10)%10);
  92         uart_putc('0'+vector%10);
  93         uart_putc(':');
  94 }
  95
  96 /* example:
  97 Test vectors -- set 3
  98 =====================
  99  */
 100 void nessie_print_setheader(uint8_t set){
 101         uart_putstr_P(PSTR("\r\n\r\nTest vectors -- set "));
 102         uart_putc('0'+set%10);
 103         uart_putstr_P(PSTR("\r\n====================="));
 104 }
 105
 106 /* example:
 107 ********************************************************************************
 108 *Project NESSIE - New European Schemes for Signature, Integrity, and Encryption*
 109 ********************************************************************************
 110
 111 Primitive Name: Serpent
 112 =======================
 113 Key size: 256 bits
 114 Block size: 128 bits
 115 */
 116
 117 void nessie_print_header(char* name,
 118                          uint16_t keysize_b,
 119                          uint16_t blocksize_b,
 120                          uint16_t hashsize_b,
 121                          uint16_t macsize_b,
 122                          uint16_t ivsize_b ){
 123         uint16_t i;
 124         uart_putstr_P(PSTR("\r\n\r\n"
 125         "********************************************************************************\r\n"
 126         "* micro-crypt - crypto primitives for microcontrolles by Daniel Otte           *\r\n"
 127         "********************************************************************************\r\n"
 128         "\r\n"));
 129         uart_putstr_P(PSTR("Primitive Name: "));
 130         uart_putstr(name);
 131         uart_putstr_P(PSTR("\r\n"));
 132         /* underline */
 133         for(i=0; i<16+strlen(name); ++i){
 134                 uart_putc('=');
 135         }
 136         char str[6]; /* must catch numbers up to 65535 + terminatin \0 */
 137         if(keysize_b){
 138                 uart_putstr_P(PSTR("\r\nKey size: "));
 139                 utoa(keysize_b, str, 10);
 140                 uart_putstr(str);
 141                 uart_putstr_P(PSTR(" bits"));
 142         }
 143         if(blocksize_b){
 144                 uart_putstr_P(PSTR("\r\nBlock size: "));
 145                 utoa(blocksize_b, str, 10);
 146                 uart_putstr(str);
 147                 uart_putstr_P(PSTR(" bits"));
 148         }
 149         if(hashsize_b){
 150                 uart_putstr_P(PSTR("\r\nHash size: "));
 151                 utoa(hashsize_b, str, 10);
 152                 uart_putstr(str);
 153                 uart_putstr_P(PSTR(" bits"));
 154         }
 155         if(macsize_b){
 156                 uart_putstr_P(PSTR("\r\nMac size: "));
 157                 utoa(macsize_b, str, 10);
 158                 uart_putstr(str);
 159                 uart_putstr_P(PSTR(" bits"));
 160         }
 161         if(ivsize_b){
 162                 if(ivsize_b==(uint16_t)-1){
 163                         uart_putstr_P(PSTR("\r\nNo initial value (IV) mode"));
 164                 }
 165                 {
 166                         uart_putstr_P(PSTR("\r\nIV size: "));
 167                         utoa(ivsize_b, str, 10);
 168                         uart_putstr(str);
 169                         uart_putstr_P(PSTR(" bits"));
 170                 }
 171         }
 172         uart_putstr_P(PSTR("\r\n"));
 173 }
 174
 175 void nessie_print_footer(void){
 176         uart_putstr_P(PSTR("\r\n\r\n\r\n\r\nEnd of test vectors\r\n\r\n"));
 177 }
 178