Recent Posts

1

Mircryption / Re: Invalid Address specified to RtlFreeHeap( 00820000, 001596D8 )

« Last post by drgreen on June 13, 2005, 10:16 PM »

   That solves the problem,  I think its time you uploaded a fresh beta!

2

Mircryption / Invalid Address specified to RtlFreeHeap( 00820000, 001596D8 )

« Last post by drgreen on June 13, 2005, 09:22 PM »

Found a problem, when I call EncryptString or DecryptString using my own char array, it looks as if your dll is trying to free it or something.

In the debug window I see:
HEAP[m220.exe]: Invalid Address specified to RtlFreeHeap( 00820000, 001596D8 )
HEAP[m220.exe]: Invalid Address specified to RtlFreeHeap( 00820000, 00159728 )

m220 is the name of my program,  here is some example code which will reproduce the same error:


#include <stdio.h>
#include <windows.h>

char * (__stdcall *DecryptString)(char *, char *,char *, int);
char * (__stdcall *EncryptString)(char *, char *,char *, int);
void  (__stdcall *FreeResultString)(char *);


int main(int argc, char **argv)
{
  char *v;
  char result[1024];
  HINSTANCE hDll;

  if ( argc == 1 )
  {
    fprintf(stdout,"usage: %s [key] [text]\n",argv[0]);
    exit(1);
  }


  hDll = LoadLibrary("mircryption.dll");
  if ( hDll == NULL)
  {
    fprintf(stdout,"Error loading dll %u\n",GetLastError());
    exit(1);
  }
  DecryptString = (void *)GetProcAddress(hDll,"DecryptString");
  EncryptString = (void *)GetProcAddress(hDll,"EncryptString");
  FreeResultString = (void *)GetProcAddress(hDll,"FreeResultString");

  if ( DecryptString == NULL || EncryptString == NULL || FreeResultString == NULL )
  {
    fprintf(stdout,"Error finding exported functions from the dll!\n");
    exit(1);
  }

  v = EncryptString(argv[1],argv[2],result,sizeof(result));
  fprintf(stdout,"%s\n",v);
  getchar();
}

debug this program, and youll end up at an int 3 breakpoint inside ntdll.dll
It also looks as if your dll is leaking memory?

3

Mircryption / Re: EncryptString / DecryptString no longer exported from the dll

« Last post by drgreen on June 08, 2005, 11:51 PM »

  awesome thanks

4

Mircryption / Re: EncryptString / DecryptString no longer exported from the dll

« Last post by drgreen on June 08, 2005, 11:25 PM »

They are exported sorta funny in the beta dll:

         2    3 00006178 _DecryptString@16
         3    4 000061E6 _EncryptString@16
         4    5 00006254 _FreeResultString@4
         5    6 00005060 _GetVersionString@0

5

Mircryption / Re: EncryptString / DecryptString no longer exported from the dll

« Last post by drgreen on June 08, 2005, 11:00 PM »

It would also be great if these functions supported cbc

6

Mircryption / EncryptString / DecryptString no longer exported from the dll

« Last post by drgreen on June 08, 2005, 10:39 PM »

I was hoping to use your dll in my program, but i found that the functions I wished to use were no longer exported.  I wanted to use EncryptString and DecryptString. Is this a mistake or what?

It would make me a happy man if you readded them to the .def file and fixed it up 

Heres the latest dll I downloaded:

  Name:            MIRCRYPTION.dll
  Characteristics: 00000000
  TimeDateStamp:   41E28A34 Mon Jan 10 08:59:16 2005
  Version:         0.00
  Ordinal base:    00000001
  # of functions:  00000025
  # of Names:      00000025
Adresses of functions: 000138A8
Adresses of name Ordinals 00013970
Adresses of names: 0001390c

  Entry Pt  Ordn  Name
  00001117     1  DLLInfo
  00001153     2  LoadDll
  00001169     3  UnloadDll
  000013F8     5  mc_decrypt
  00001323     4  mc_decrypt2
  00001486     6  mc_delkey
  000014CA     7  mc_disablekey
  00001552     8  mc_displaykey
  0000150E     9  mc_enablekey
  000013B1    11  mc_encrypt
  000012DC    10  mc_encrypt2
  0000136A    12  mc_forceencrypt
  0000177F    13  mc_forcetopic
  00001615    14  mc_isdecrypting
  000015C9    15  mc_isencrypting
  000012A1    16  mc_iskeyunlocked
  00001596    17  mc_listkeys
  00001661    18  mc_md5
  00002260    19  mc_pastepad
  0000143F    20  mc_setkey
  0000126B    21  mc_setkeyfile
  00001226    22  mc_setunlockpassphrase
  00002063    23  mc_splitsay
  00001C64    24  mc_touchfile
  00001135    25  version