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<p class="MsoNormal">Look at <a href="https://github.com/openssl/openssl/pull/5320">
https://github.com/openssl/openssl/pull/5320</a> to get an example. It’s about safety and maintainability.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Rich Salz <rsalz@akamai.com><br>
<b>Reply-To: </b>"openssl-project@openssl.org" <openssl-project@openssl.org><br>
<b>Date: </b>Saturday, February 10, 2018 at 5:06 PM<br>
<b>To: </b>"openssl-project@openssl.org" <openssl-project@openssl.org><br>
<b>Subject: </b>Re: [openssl-project] Removing assembler for outdated algorithms<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">There is a maintenance cost. Maybe it is negligible, but there is a cost.
<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l0 level1 lfo3">The build rules are more complicated; we have had errors with .S vs .s files<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo3">There are more internal config parameters to understand<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo3">There are more ifdefs in the code<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo3">There’s only one person who really understands the perlasm stuff<o:p></o:p></li></ul>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I think “significant maintenance cost” is not the question to ask. It’s maintenance and risk versus use.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">"tjh@openssl.org" <tjh@openssl.org><br>
<b>Reply-To: </b>"openssl-project@openssl.org" <openssl-project@openssl.org><br>
<b>Date: </b>Saturday, February 10, 2018 at 4:29 PM<br>
<b>To: </b>"openssl-project@openssl.org" <openssl-project@openssl.org><br>
<b>Subject: </b>Re: [openssl-project] Removing assembler for outdated algorithms</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><a name="_MailOriginalBody">Before we look at removing things like this, I think we should look at whether or not they actually have a significant maintenance cost.
<o:p></o:p></a></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody">Tim.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody">On 11 Feb. 2018 7:08 am, "Salz, Rich" <</span><a href="mailto:rsalz@akamai.com"><span style="mso-bookmark:_MailOriginalBody">rsalz@akamai.com</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody">>
wrote:<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody">This is derived from bureau/libcrypto-proposal that Emilila made in November 2015.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody">We should remove the assembler versions of the following<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody"> Blowfish, cast, des, rc4, rc5, ripemd, whirlpool, md5<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody">The reason is that they are outdated, not in use very much, and optimization is not important, compared to having a single reference
source that we can maintain and debug.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><br>
_______________________________________________<br>
openssl-project mailing list<br>
</span><a href="mailto:openssl-project@openssl.org"><span style="mso-bookmark:_MailOriginalBody">openssl-project@openssl.org</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><br>
</span><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__mta.openssl.org_mailman_listinfo_openssl-2Dproject&d=DwMFaQ&c=96ZbZZcaMF4w0F4jpN6LZg&r=4LM0GbR0h9Fvx86FtsKI-w&m=47KNj5EcM4J5bu7SggXsMIQAazYObKX2PjUtZ71Dl3U&s=fh1Zx5a9eDRlRkP-mVoUh5Wl49tdWCb5J3UpjZNMuR4&e=" target="_blank"><span style="mso-bookmark:_MailOriginalBody">https://mta.openssl.org/mailman/listinfo/openssl-project</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
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