On Sun, Dec 11, 2011, cellecial wrote:
> Hi,
>
> I wrote a simple pkcs12 demo(under Windows), it just read from a PKCS12
> file and got private key and certificate.
> If I use single thread, it works fine.
> If I use multi-thread, it works fine for a while ,then popups an error
> dialogue "heap is corrupt".If I debug it in Visual Studio,it points to
> PKCS12_parse() .
> If I use EnterCriticalSection and LeaveCriticalSection with
> multi-thread, it works fine too, but as you know, the effect is as same as
> single thread does.
>
> So I want to know , what shared resource is protected by
> CriticalSection? Is PKCS12_parse() not thread-safe? Can it be executed in
> multi-threads without mutex?
>
> int pkcs12test(unsigned char *p12buf, int p12buflen, unsigned char *p12pswd)
> {
> PKCS12 *p12;
> X509 *cert;
> EVP_PKEY *prvkey;
> int len;
> char buf[4096];
> int i=0;
> char desc[1000];
>
> OpenSSL_add_all_algorithms();
>
At least one problem is the above line. You should call
OpenSSL_add_all_algorithm() *once* before starting threads.
Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org
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