Posted by M. Sokolewicz on 01/18/05 17:24

didn't you read what wez said? they're gathering entropy... you *can't*
(and shouldn't want to) prevent that.


Vladas Shukevichus wrote:
> Hello, Gents,
> When I use any OpenSSL encryption/decryption function (like
> openssl_seal, openssl_open, openssl_public_encrypt,
> openssl_private_decrypt, etc.) it takes very long time to execute,
> when
> it has been called in a first time. After that other function calls
> performs very fast in the same script.
> [18 Jan 1:23am CET] wez@php.net:
> Not a php bug; the openssl libraries are gathering entropy on that
> first
> hit.
> How can I prevent this? All scripts executes a second longer, if
> there are any OpenSSL function.
> Reproduce code:
> ---------------
> $btime = microtime(true);
> openssl_seal('Some information', $sealed, $ekeys,
> array(openssl_get_publickey('file://C:\512.pub')));
> echo 'Time: '.(microtime(true) - $btime);
> $btime = microtime(true);
> openssl_seal('Some information', $sealed, $ekeys,
> array(openssl_get_publickey('file://C:\1024.pub')));
> echo '<br>Time: '.(microtime(true) - $btime);
> Expected result:
> ----------------
> Time: 0.00************
> Time: 0.00075888633728
> Actual result:
> --------------
> Time: 0.969028949738
> Time: 0.00075888633728

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