> Hello,
>
> The Windows NT 4.0 system has the workstation service stopped.
>
> This causes the following snippet from rand_win.c to return 0
>
> if (netstatget(NULL, L"LanmanWorkstation", 0, 0,
> &outbuf) == 0)
> {
> RAND_add(outbuf, sizeof(STAT_WORKSTATION_0),
> 45);
> netfree(outbuf);
> }
>
> Add to this a large section of calls are #if 0 out due to a reported
> problem
> by Wolfgang Marczy and there isn't many places this function gets
> entropy
> from.
>
> Any suggestions?
Why not grab some entropy from the system entropy provider?
#include <wincrypt.h>
bool GetSysEntropy(void *ptr, int len)
{
char namebuf[512];
HCRYPTPROV handle;
DWORD count=500;
if(!CryptGetDefaultProvider(PROV_RSA_FULL, NULL, CRYPT_MACHINE_DEFAULT,
namebuf, &count)) return false;
if(!CryptAcquireContext(&handle, NULL, namebuf, PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT|CRYPT_SILENT)) return false;
if(!CrytpGenRandom(handle, len (BYTE *) ptr))
{
CryptReleaseContext(handle, 0);
return false;
}
CryptReleaseContext(handle, 0);
return true;
}
DS
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