SipHash for PHP

SipHash extension for PHP.

SipHash is a family of pseudorandom functions optimized for short inputs. Target applications include network traffic authentication and hash-table lookups protected against hash-flooding denial-of-service attacks. SipHash has well-defined security goals and competitive performance.

Usage:

sip_hash(key, message)

outputs siphash-2-4(key, message) as a 8-byte string.

sip_hash32(key, message)

truncates the value and outputs a 32-bit integer.

The key should be a 16 bytes string.

Installation

$ phpize
$ ./configure --enable-siphash
$ make install

And add extension=siphash.so to your php.ini configuration file.

This PHP extension uses FloodyBerry's basic implementation

PHP 5.6+ and PHP 7.0+ are fully supported.