genkat_hash.c

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// disable deprecation for sprintf and fopen
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#endif

#include <stdio.h>
#include <string.h>

#include "crypto_hash.h"
#include "api.h"

#define KAT_SUCCESS          0
#define KAT_FILE_OPEN_ERROR -1
#define KAT_DATA_ERROR      -3
#define KAT_CRYPTO_FAILURE  -4

#define MAX_FILE_NAME      256
#define MAX_MESSAGE_LENGTH 1024

typedef unsigned char UChar;
typedef unsigned long long int ULLInt;

void init_buffer(UChar *buffer, ULLInt numbytes);
void fprint_bstr(FILE *fp, const char *label, const UChar *data, \
                 ULLInt length);
int generate_test_vectors(void);


int main(void)
{
  int ret;
  
  ret = generate_test_vectors();
  if (ret != KAT_SUCCESS)
    fprintf(stderr, "test vector generation failed with code %d\n", ret);
  
  return ret;
}


int generate_test_vectors(void)
{
  FILE *fp;
  char fileName[MAX_FILE_NAME];
  UChar msg[MAX_MESSAGE_LENGTH], digest[CRYPTO_BYTES];
  int ret_val = KAT_SUCCESS, count = 1;
  ULLInt mlen;
  
  init_buffer(msg, sizeof(msg));
  
  sprintf(fileName, "LWC_HASH_KAT_%d.txt", (CRYPTO_BYTES*8));
  if ((fp = fopen(fileName, "w")) == NULL) {
    fprintf(stderr, "Couldn't open <%s> for write\n", fileName);
    return KAT_FILE_OPEN_ERROR;
  }
  
  for (mlen = 0; mlen <= MAX_MESSAGE_LENGTH; mlen++) {
    fprintf(fp, "Count = %d\n", count++);
    fprint_bstr(fp, "Msg = ", msg, mlen);
    ret_val = crypto_hash(digest, msg, mlen);
    if(ret_val != 0) {
      fprintf(fp, "crypto_hash returned <%d>\n", ret_val);
      ret_val = KAT_CRYPTO_FAILURE;
      break;
    }
    fprint_bstr(fp, "MD = ", digest, CRYPTO_BYTES);
    fprintf(fp, "\n");
  }
  
  fclose(fp);
  return ret_val;
}


void fprint_bstr(FILE *fp, const char *label, const UChar *data, ULLInt length)
{ 
  ULLInt i;
  
  fprintf(fp, "%s", label); 
  for (i = 0; i < length; i++)
    fprintf(fp, "%02X", data[i]);
  fprintf(fp, "\n");
}


void init_buffer(UChar *buffer, ULLInt numbytes)
{
  ULLInt i;
  
  for (i = 0; i < numbytes; i++)
    buffer[i] = (UChar) i;
}