CALCUL DE HASH MD5 AVEC LA CRYPTAPI

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <wincrypt.h>
#include "md5.h"

static HANDLE Console = NULL;

VOID print(PTSTR Format, ...) {
  va_list Arguments;
  va_start(Arguments, Format);
  PTSTR Message = NULL;
  WriteConsole(Console, Message, FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_STRING, Format, 0, 0, (PTSTR) &Message, 0, &Arguments), NULL, NULL);
  LocalFree(Message);
  va_end(Arguments);
}

INT main(INT argc, PTSTR argv[]) {
  Console = GetStdHandle(STD_OUTPUT_HANDLE);

  if (argc != 2) {
    print("Usage: %1!s! \"text to hash\"%n", argv[0]);
    return 0;
  }

  LARGE_INTEGER x;
  LARGE_INTEGER y;
  LARGE_INTEGER freq;
  QueryPerformanceFrequency(&freq);

  INT n = lstrlen(argv[1]);

  print("Hashing with MD5 builtin ... ");
  QueryPerformanceCounter(&x);
    md5_state_t state;
    md5_byte_t digest[16];
    md5_init(&state);
    md5_append(&state, argv[1], n);
    md5_finish(&state, digest);
  QueryPerformanceCounter(&y);
  print("done (%1!10llu! ticks)%n", (y.QuadPart - x.QuadPart) % freq.QuadPart);

  INT i = 0;
  print("Result: `");
  while (i < 16) print("%1!02x!", digest[i++]);
  print("'%n%n");

  HCRYPTPROV Provider = 0;
  CryptAcquireContext(&Provider, NULL, MS_DEF_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
  print("Hashing with WinCryptAPI ... ");
  QueryPerformanceCounter(&x);
    HCRYPTHASH Hash = 0;
    CryptCreateHash(Provider, CALG_MD5, 0, 0, &Hash);
    CryptHashData(Hash, argv[1], n, 0);
    BYTE digest2[16];
    DWORD size = sizeof(digest2);
    CryptGetHashParam(Hash, HP_HASHVAL, digest2, &size, 0);
    CryptDestroyHash(Hash);
  QueryPerformanceCounter(&y);
  print("done (%1!10llu! ticks)%n", (y.QuadPart - x.QuadPart) % freq.QuadPart);
  CryptReleaseContext(Provider, 0) != 0;

  i = 0;
  print("Result: `");
  while (i < 16) print("%1!02x!", digest2[i++]);
  print("'%n");

  return 0;
}

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