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<p>Michel, merci beaucoup, for the explanation.</p>
<p>It does clear things up for me. I appreciate it,</p>
<p>Warron <br>
</p>
<div class="moz-cite-prefix">On 7/8/2016 6:08 PM, Michel wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You
need to remember a password. Passwords should never be
stored.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Keys
are binary data (even if they look as text because they are
hexa or base64 encoded). <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Secret
keys can be 'derived' from a password to be used when
encrypting or decrypting.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Sometime
you need to store an ENCRYPTED secret key (generally using
another password).<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">see
<a moz-do-not-send="true"
href="https://en.wikipedia.org/wiki/Key_%28cryptography%29">https://en.wikipedia.org/wiki/Key_(cryptography)</a>.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">IV
means 'Initial Vector', which is random binary data needed
to 'start' encryption or decryption.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">See
<a moz-do-not-send="true"
href="https://en.wikipedia.org/wiki/Initialization_vector">https://en.wikipedia.org/wiki/Initialization_vector</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hope
it helps,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Michel.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">De :</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
openssl-users [<a class="moz-txt-link-freetext" href="mailto:openssl-users-bounces@openssl.org">mailto:openssl-users-bounces@openssl.org</a>]
<b>De la part de</b> Warron French<br>
<b>Envoyé :</b> jeudi 7 juillet 2016 22:37<br>
<b>À :</b> <a class="moz-txt-link-abbreviated" href="mailto:openssl-users@openssl.org">openssl-users@openssl.org</a><br>
<b>Objet :</b> [openssl-users] When to use a key or
password<o:p></o:p></span></p>
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<p>Is there any good rule of thumb for when to use:<o:p></o:p></p>
<p><b>-k <password></b> versus<o:p></o:p></p>
<p><b>-K <key></b><o:p></o:p></p>
<p>Also, what does the term IV refer to in reference to <b>-iv
IV</b>?<o:p></o:p></p>
<p>Thanks in advance,<o:p></o:p></p>
<p>Warron<o:p></o:p></p>
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