https://wiki.openssl.org/api.php?action=feedcontributions&feedformat=atom&user=Doru001 2026-04-10T05:29:44Z User contributions MediaWiki 1.35.13 https://wiki.openssl.org/index.php?title=Talk:EVP_Signing_and_Verifying&diff=1117 2013-06-16T13:04:45Z

<p>Doru001: /* Clarification required */</p> <hr /> <div>== Clarification required ==<br /> Why is <br /> if(1 != EVP_DigestSignFinal(mdctx, *sig, slen)) goto err;<br /> done two times?--[[User:Doru001|Doru001]] 13:04, 16 June 2013 (UTC)<br /> <br /> ----<br /> <br /> Good question! I've added some extra code comments to explain it. Basically the first call has a NULL sig parameter to obtain the length of the signature. Memory is then allocated sufficient to hold the sig, and then the sig is obtained in the second call to EVP_DigestSignFinal.<br /> <br /> --[[User:Matt|Matt]] 21:16, 15 June 2013 (UTC)<br /> <br /> ----<br /> <br /> Thank you, now it is clear. [[User:Doru001|Doru001]] 13:04, 16 June 2013 (UTC)</div>

Doru001 https://wiki.openssl.org/index.php?title=Talk:EVP_Signing_and_Verifying&diff=1114 2013-06-15T16:52:05Z

<p>Doru001: Created page with &quot;== Clarification required == Why is if(1 != EVP_DigestSignFinal(mdctx, *sig, slen)) goto err; done two times?&quot;</p> <hr /> <div>== Clarification required ==<br /> Why is <br /> if(1 != EVP_DigestSignFinal(mdctx, *sig, slen)) goto err;<br /> done two times?</div>

Doru001