crypto/chacha20/src/test.c

   1 /*************************************************************************
   2  * This is a simple program to calculate test vectors and compare them   *
   3  * to known good values for XChaCha20.
   4  *************************************************************************/
   5 #include <stdio.h>
   6 #include <errno.h>
   7 #include <stdlib.h>
   8 #include <stdint.h>
   9 #include <string.h>
  10 #include "xchacha20.h"
  11 #include "xchacha20_wrapper.h"
  12
  13
  14 /** Compare our output to the output of a known good XChaCha20 library.
  15  * The test vectors used here are from examples given of the Crypto++
  16  * cryptographic library's XChaCha20 examples. These values can be
  17  * found here:
  18  * https://www.cryptopp.com/wiki/XChaCha20
  19  * @returns 0 on success, -1 on failure or error
  20  *
  21  */
  22 int check_cpp(void){
  23         XChaCha_ctx ctx;
  24         uint8_t buffer[128];
  25         uint8_t counter[8] = {0x1};
  26
  27         /* Test values from Crypto++ documentation */
  28         uint8_t key[] = {
  29                         0x5E, 0xC5, 0x8B, 0x6D, 0x51, 0x4F, 0xE0, 0xA5,
  30                         0x6F, 0x1E, 0x0D, 0xEA, 0x7B, 0xDC, 0x09, 0x5A,
  31                         0x10, 0xF5, 0xB6, 0x18, 0xBD, 0xB6, 0xF2, 0x26,
  32                         0x2F, 0xCC, 0x59, 0x7B, 0xB2, 0x30, 0xB3, 0xEF
  33         };
  34
  35         uint8_t iv[] = {
  36                         0xA3, 0x45, 0xF5, 0xCF, 0x80, 0x23, 0x51, 0x7C,
  37                         0xC0, 0xFC, 0xF0, 0x75, 0x74, 0x8C, 0x86, 0x5F,
  38                         0x7D, 0xE8, 0xCA, 0x0C, 0x72, 0x36, 0xAB, 0xDA
  39         };
  40
  41         uint8_t correct_ciphertext[] = {
  42                         0xEE, 0xA7, 0xC2, 0x71, 0x19, 0x10, 0x65, 0x69,
  43                         0x92, 0xE1, 0xCE, 0xD8, 0x16, 0xE2, 0x0E, 0x62,
  44                         0x1B, 0x25, 0x17, 0x82, 0x36, 0x71, 0x6A, 0xE4,
  45                         0x99, 0xF2, 0x97, 0x37, 0xA7, 0x2A, 0xFC, 0xF8,
  46                         0x6C, 0x72
  47         };
  48
  49         uint8_t plaintext[] = "My Plaintext!! My Dear plaintext!!";
  50         uint32_t msglen = strlen((char *)plaintext);
  51
  52         xchacha_keysetup(&ctx, key, iv);
  53
  54         /* Crypto++ initializes their counter to 1 instead of 0 */
  55         xchacha_set_counter(&ctx, counter);
  56         //xchacha_encrypt_bytes(&ctx, plaintext, buffer, msglen);
  57         xchacha_encrypt_bytes_svp64(&ctx, plaintext, buffer, msglen);
  58
  59         /* Compare our ciphertext to the correct ciphertext */
  60         if(memcmp(buffer, correct_ciphertext, msglen) != 0){
  61         printf("msglen: %d\n", msglen);
  62         printf("correct:\n");
  63         for (uint32_t i=0; i < msglen; i++) {
  64             printf("%02x ", correct_ciphertext[i]);
  65         }
  66         printf("\nsvp64:\n");
  67         for (uint32_t i=0; i < msglen; i++) {
  68             printf("%02x ", buffer[i]);
  69         }
  70         printf("\n");
  71                 return(-1);
  72         }
  73
  74         return(0);
  75 }
  76
  77 int main(void){
  78         if ((check_cpp()) == 0) {
  79                 printf("Cryptographic tests passed\n");
  80         } else {
  81                 printf("Cryptographic tests failed!\n");
  82         }
  83
  84         return(0);
  85 }