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#include <stdio.h>
#include <time.h>
#include "funccrypt.h"
static int crypted_fn(int arg0, char *arg1, void *arg2)
{
CRYPT_PROLOGUE(crypted_fn);
int i;
printf("I'm decrypted ..\n");
for (i = 0; i < 32; ++i)
printf("%d ", i);
puts("");
CRYPT_EPILOGUE(crypted_fn);
return 0x66;
}
static void crypted_fn2(void)
{
CRYPT_PROLOGUE(crypted_fn2);
printf("Another decrypted fn..\n");
printf(
#ifdef _DEBUG
"CRYPT_PROLOGUE crpyt_func returned: %s\n",
crypt_strs[ CRYPT_RETVAL() ]
#else
"CRYPT_PROLOGUE crpyt_func returned: %d\n",
CRYPT_RETVAL()
#endif
);
CRYPT_EPILOGUE(crypted_fn2);
printf("This part stays unencrypted all the time.\n");
}
CRYPT_FNDEF(crypted_fn3, void *arg0, int arg1, const char *arg2)
{
printf("Yet another cryptable fn.. ");
/* generate some nonsense machine instructions */
printf("."); printf("."); printf("."); printf(".");
printf("\n");
}
CRYPT_FNEND(crypted_fn3);
int main(void)
{
srand(time(NULL));
#ifdef _DEBUG
printf("Before Encryption:\n");
printf("crypted_fn:\n");
printHexBuf((uint8_t *)crypted_fn, 160, 32);
printf("crypted_fn2:\n");
printHexBuf((uint8_t *)crypted_fn2, 160, 32);
printf("crypted_fn3:\n");
printHexBuf((uint8_t *)crypted_fn3, 160, 32);
#endif
printf("\nAfter Encryption:\n");
#ifdef _DEBUG
printf("crypted_fn return val: %s\n",
crypt_strs[ crypt_func((void *)crypted_fn) ]);
printf("crypted_fn2 return val: %s\n",
crypt_strs[ crypt_func((void *)crypted_fn2) ]);
printf("crypted_fn3 return val: %s\n",
crypt_strs[ crypt_func((void *)crypted_fn3) ]);
#else
printf("crypted_fn return val: %d\n",
crypt_func((void *)crypted_fn));
printf("crypted_fn2 return val: %d\n",
crypt_func((void *)crypted_fn2));
printf("crypted_fn3 return val: %d\n",
crypt_func((void *)crypted_fn3));
#endif
#ifdef _DEBUG
printf("crypted_fn:\n");
printHexBuf((uint8_t *)crypted_fn, 160, 32);
printf("crypted_fn2:\n");
printHexBuf((uint8_t *)crypted_fn2, 160, 32);
printf("crypted_fn3:\n");
printHexBuf((uint8_t *)crypted_fn3, 160, 32);
#endif
printf("\noutput:\n");
printf("crypted_fn: 0x%X\n", crypted_fn(0, NULL, NULL));
crypted_fn2();
crypted_fn3(NULL, (unsigned int)-1, "TEST");
return 0;
}
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