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588db7cecf
Optimizing compilers have an annoying tendency to throw out memsets over data that they think aren't used anymore. Apply secure zero-out in cases where this has potential to happen.
Generic hashing framework for PHP
Simplest usages:
$digest = hash($algoname, $message);
$digest = hash_file($algoname, $filename);
Examples:
$digest = hash('md5', 'The quick brown fox jumped over the lazy dog.');
Feeder usage:
$context = hash_init($algoname);
hash_update($context, $message);
$digest = hash_final($context);
hash(), hash_file(), and hash_final() each support an optional boolean parameter $raw_output which behaves in the same
manner as sha1()'s optional parameter.