Universally Unique Identifier library

OSSP uuid is a ISO-C:1999 application programming interface (API) and
corresponding command line interface (CLI) for the generation of DCE
1.1, ISO/IEC 11578:1996 and RFC 4122 compliant Universally Unique
Identifier (UUID). It supports DCE 1.1 variant UUIDs of version 1
(time and node based), version 3 (name based, MD5), version 4 (random
number based) and version 5 (name based, SHA-1). Additional API
bindings are provided for the languages ISO-C++:1998, Perl:5 and
PHP:4/5. Optional backward compatibility exists for the ISO-C DCE-1.1
and Perl Data::UUID APIs.