OpenSSL compilation errors in Windows

[Nagalakshmi V J]

Hi Matt,

Thanks for your help. I am able to proceed now.

Thanks and regards,
Nagalakshmi

-----Original Message-----
From: Matt Caswell <matt at openssl.org>
Sent: Wednesday, October 30, 2019 7:55 PM
To: Nagalakshmi V J <nagalakshmi.j at altran.com>; openssl-users at openssl.org
Subject: Re: OpenSSL compilation errors in Windows

** This mail has been sent from an external source **


On 29/10/2019 11:55, Nagalakshmi V J wrote:
> Hi Matt,
>
> Thank you so much for your response. Those mentioned APIs resolved my
> errors.
>
> For the below code,
>
>  return  SSL_get_session(pConnection) != NULL &&
>                 pConnection->session->session_id_length != 0;
>
> Any reference for accessing session_id_length?
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.openssl.org_d
> ocs_man1.1.0_man3_SSL-5FCTX-5Fset-5Fgenerate-5Fsession-5Fid.html&d=DwI
> D-g&c=cxWN2QSDopt5SklNfbjIjg&r=zbjUR56YPF3jaTRTjX4KZlHM9-LmYAuR5atSqEG
> OnpA&m=mgmrDa8wrs1zaAUL-PLOcRGKsCoFwXg9ZmrJMt56Yso&s=GW6E7NE-6ODy28APY
> gBz7MYCKAuXh9wULiPQjZ-AMR0&e=

You should use SSL_SESSION_get_id() to get hold of the length:

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.openssl.org_docs_man1.1.1_man3_SSL-5FSESSION-5Fget-5Fid.html&d=DwID-g&c=cxWN2QSDopt5SklNfbjIjg&r=zbjUR56YPF3jaTRTjX4KZlHM9-LmYAuR5atSqEGOnpA&m=mgmrDa8wrs1zaAUL-PLOcRGKsCoFwXg9ZmrJMt56Yso&s=rGqb0VAIAgD_dzrh6Cpv2AyI6wzAaog-HYn_OY_0mMU&e=

Matt

>
> Not sure if I can use the above link.
>
>
> /Thanks & Regards,/
> /Nagalakshmi V J/
> ----------------------------------------------------------------------
> --
> *From:* Matt Caswell <matt at openssl.org>
> *Sent:* 29 October 2019 10:47
> *To:* Nagalakshmi V J <nagalakshmi.j at altran.com>;
> openssl-users at openssl.org <openssl-users at openssl.org>
> *Subject:* Re: OpenSSL compilation errors in Windows
>
> ** This mail has been sent from an external source **
>
>
> On 29/10/2019 10:34, Nagalakshmi V J wrote:
>>
>> tls1_PRF(s->ctx->md5,s->ctx->sha1,buf,(int)(p-buf),
>>
>>          pGenerator->master_secret,sizeof(pGenerator->master_secret),
>>
>>          km,tmp,num);
>
> It seems your code is replicating parts of libssl - which seems like a
> strange (and possibly dangerous) thing to do!
>
>> Struct ssl_ctx_st {
>>
>> ...
>>
>> constEVP_MD *md5;          /* For SSLv3/TLSv1 'ssl3-md5' */
>>
>> constEVP_MD *sha1;         /* For SSLv3/TLSv1 'ssl3->sha1' */
>>
>> ...
>>
>> }
>
> You really don't need to access these things. They're just cached
> references to the value returned by EVP_get_digestbyname("ssl3-md5")
> and EVP_get_digestbyname("ssl3-sha1"). So you can call those functions
> directly anyway.
>
> Matt
>
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