This class defines a method,
Sha512_crypt(), which takes a password and a salt string and generates a
Sha512 encrypted password entry.
This class implements the new generation, scalable, SHA512-based Unix 'crypt'
algorithm developed by a group of engineers from Red Hat, Sun, IBM, and HP
for common use in the Unix and Linux /etc/shadow files.
The Linux glibc library (starting at version 2.7) includes support for
validating passwords hashed using this algorithm.
The algorithm itself was released into the Public Domain by Ulrich Drepper
<firstname.lastname@example.org>. A discussion of the rationale and development of
this algorithm is at
and the specification and a sample C language implementation is at