Assembly Language for Beginners

8.7 Encrypted database case #1

fwrite (buf+(3+4), real_flen, 1, f);

fclose (f);

free (buf);
};

// run: input output 0/1 password
// 0 for encrypt, 1 for decrypt

int main(int argc, char *argv[])
{
if (argc!=5)
{
printf ("Incorrect parameters!\n");
return 1;
};

if (strcmp (argv[3], "0")==0)

crypt_file (argv[1], argv[2], argv[4]);

else

if (strcmp (argv[3], "1")==0)

decrypt_file (argv[1], argv[2], argv[4]);

else

printf ("Wrong param %s\n", argv[3]);

return 0;
};

8.7 Encrypted database case #1

(Thisparthasbeenfirstappearedinmyblogat26-Aug-2015. Somediscussion:https://news.ycombinator.
com/item?id=10128684.)

8.7.1 Base64 and entropy.

I’ve got theXMLfile containing some encrypted data. Perhaps, it’s related to some orders and/or cus-
tomers information.

<?xml version = "1.0" encoding = "UTF-8"?>