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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Jay, <br>
<br>
Thanks for your reply. <br>
<br>
Our requirement is as follows <br>
<br>
1. only using openssl for authenticaion and a key wrap algorithm. No encryption is needed.
<br>
2. For MAC alogorithm, we need to use M_SHA1 / M_SHA256 <br>
For key wrap algo, we need to use AES 128 or AES 256 algo. <br>
<br>
Following are the steps we followed <br>
<br>
1. As we have eCOS platform, we just integrated the openssl files (1.0.1g) and added to them to our makefile to build them (only .c and .h files)
<br>
2 In our applicatoin we call the openssl functions to above two functions from the openssl.
<br>
<br>
key wrap algorithm to decrupt the session key which is received from the master. AES_set_decrypt_key, AES_unwrap_key
<br>
<br>
MAC algo to generate a mac value for a message (HMAC(), EVP_sha1(), EVP_sha256())
<br>
<br>
3. But during the linking stage we are getting the errors as ""undefined reference to a function "
<br>
Example": <br>
openssl/openssl101g/crypto/engine/tb_rand.o(.text.ENGINE_get_default_RAND+0x8): In function `ENGINE_get_default_RAND': undefined reference to `engine_table_select'
<br>
<br>
4. Not able to figure out if there is any common setting file (to configure openssl ) so that we can enable /disable some features and services.
<br>
<br>
We tried doing the method as your had suggested. But it seems that there is not much effect for the declaration of eCos
<br>
<br>
Request to please let us know what mistake we are making, or we have missed out any configuration.
<br>
<br>
Regards, <br>
<br>
SSK <o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Jay Foster-2 [via OpenSSL] [mailto:ml-node+<a href="/user/SendEmail.jtp?type=node&node=67926&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>]
<br>
<b>Sent:</b> 17 August 2016 07:53 PM<br>
<b>To:</b> Sunil Kerur <<a href="/user/SendEmail.jtp?type=node&node=67926&i=1" target="_top" rel="nofollow" link="external">[hidden email]</a>><br>
<b>Subject:</b> Re: Using Openssl for eCOS platform<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I have used the following snippet (along with some others) in the e_os.h header file:<o:p></o:p></p>
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<p class="MsoNormal"><tt><span style="font-size:10.0pt"># if defined(__ECOS)</span></tt><br>
<tt><span style="font-size:10.0pt"># define __INITIAL_POINTER_SIZE 0</span></tt><br>
<tt><span style="font-size:10.0pt"># define GETPID_IS_MEANINGLESS</span></tt><br>
<tt><span style="font-size:10.0pt"># define NO_CHMOD</span></tt><br>
<tt><span style="font-size:10.0pt"># define NO_SYSLOG</span></tt><br>
<tt><span style="font-size:10.0pt"># define HAVE_LONG_LONG 1</span></tt><br>
<tt><span style="font-size:10.0pt"># define HAVE_LONG_DOUBLE 1</span></tt><br>
<tt><span style="font-size:10.0pt"># define OPENSSL_THREADS</span></tt><br>
<tt><span style="font-size:10.0pt"># undef DEVRANDOM_EGD</span></tt><br>
<tt><span style="font-size:10.0pt"># endif</span></tt><o:p></o:p></p>
</blockquote>
<p class="MsoNormal">The GETPID_IS_MEANINGLESS might work for you.<br>
<br>
Jay<br>
<br>
On 8/17/2016 2:55 AM, Devadas kk wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
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<p class="MsoNormal"> Best way to do is to modify e_os.h header file.<o:p></o:p></p>
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<p class="MsoNormal"> This file has to do with OS specific changes.<br>
<o:p></o:p></p>
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<p class="MsoNormal"> Something like<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"> #ifdef ECOS<o:p></o:p></p>
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<p class="MsoNormal"> #define getpid ecos_task_id_fn<o:p></o:p></p>
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<p class="MsoNormal">#endif<br>
<br>
ecos_task_id_fn is a placed holder, find out actual function name to get process ID.<br>
GetThreadID is the function in NETWARE.<o:p></o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
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<p class="MsoNormal">Devadas<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Aug 17, 2016 at 10:28 AM, ssk1506 <<a href="/user/SendEmail.jtp?type=node&node=67903&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi, I am using openssl on a n eCOS platform. I need only the secure authentication (no encryption needed). I integrated the openssl source code with my application. When I trying to build, I am getting some linking errors. :undefined reference
to 'getpid' :undefined reference to 'RANDpoll' I am trying to find how to enable or disable the macros (switches to enable or disable a feature/service). But it seems that openssl.conf is generated from some utitlity program and from a file
<a href="http://opensslconf.h.in" target="_blank" rel="nofollow" link="external">opensslconf.h.in</a> Pl. anyone suggest how to configure. Regards, SSK
<o:p></o:p></p>
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