Public bug reported:
Ubuntu 7.04 x86
Using mcrypt in ECB mode, and passing the IV size to the
mcrypt_generic_init function, the encryption process hangs
intermittently, sometimes for up to 10-12 seconds.
$td = mcrypt_module_open('tripledes, '', 'ecb', '') ;
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_DEV_RANDOM);
$expected_key_size = mcrypt_enc_get_key_size($td);
$encString = substr(md5('enc_string'), 0, $expected_key_size);
mcrypt_generic_init($td, $encString, $iv);
It was noticed that IV is ignored in ECB, so $iv was set to a zero
integer and performance times returned to normal.
** Affects: php-mcrypt (Ubuntu)
Importance: Undecided
Status: New
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mcrypt hanging during encryption process
https://bugs.launchpad.net/bugs/130181
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