* Harald Koch ([EMAIL PROTECTED]) wrote:
> In message <[EMAIL PROTECTED]>, Richard Levitte - VMS 
>Whacker writes:
> >
> > In message <[EMAIL PROTECTED]> on Thu, 20 Feb 2003 10:06:55 +0300, 
>Solar Designer <[EMAIL PROTECTED]> said:
> > 
> > solar> --- openssl-0.9.6h/crypto/x509/x509_vfy.c       Thu Nov 28 11:06:30 2002
> > solar> +++ openssl-0.9.6i/crypto/x509/x509_vfy.c       Tue Dec 10 11:28:16 2002
> > solar> @@ -897,7 +897,7 @@
> > solar>                 ctx->chain=NULL;
> > solar>                 }
> > solar>         CRYPTO_free_ex_data(x509_store_ctx_method,ctx,&(ctx->ex_data));
> > solar> -       OPENSSL_cleanse(&ctx->ex_data,sizeof(CRYPTO_EX_DATA));
> > solar> +       memset(&ctx->ex_data,0,sizeof(CRYPTO_EX_DATA));
> > solar>         }
> > solar> 
> > solar> Is this change intentional, it appears to undo the change introduced
> > solar> between 0.9.6g and 0.9.6h?
> > 
> > Yes.  ex_data is a pointer, need I say more?  :-)
> 
> What's wrong with the much simpler "ctx->ex_data = 0;" then?

erm, ex_data is not a pointer, it is a CRYPTO_EX_DATA structure.
&ex_data is a pointer, of course.

Anyway, looking at the implementation of CRYPTO_free_ex_data(), I can't
understand why any cleanse/memset is required anyway? Richard - did you
change it just as part of the memset->cleanse audit, or is there a
reason in this specific case that some sanitisation is required?

Cheers,
Geoff

-- 
Geoff Thorpe
[EMAIL PROTECTED]
http://www.openssl.org/

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