http://blog.astrumfutura.com/2010/10/nanosecond-scale-remote-timing-attacks-on-php-applications-time-to-take-them-seriously/ http://blog.astrumfutura.com/2010/1

http://blog.astrumfutura.com/2010/10/nanosecond-scale-remote-timing-attacks-on-php-applications-time-to-take-them-seriously/ http://blog.astrumfutura.com/2010/10/nanosecond-scale-remote... For cryptographic secrets, password hashes, MACs, digital signatures, etc. use a comparison operator that runs in constant time. Ergo, hash_equals()