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.IX Title "Math::Prime::Util::Entropy 3pm"
.TH Math::Prime::Util::Entropy 3pm 2024-03-07 "perl v5.38.2" "User Contributed Perl Documentation"
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.SH NAME
Math::Prime::Util::Entropy \- Get a good random seed
.SH VERSION
.IX Header "VERSION"
Version 0.73
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Provides a single method to get a good seed if possible.  This is a streamlined
version of Crypt::Random::Seed, with ideas from Bytes::Random::Secure::Tiny.
.SS entropy_bytes
.IX Subsection "entropy_bytes"
Takes a number of bytes \f(CW\*(C`n\*(C'\fR and returns either undef (no good seed available) or
a binary string with good entropy.
.PP
We try in order:
.PP
.Vb 5
\&   \- the Win32 Crypto API
\&   \- /dev/urandom
\&   \- /dev/random
\&   \- L<Crypt::Random::Seed>
\&   \- L<Crypt::PRNG>
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Math::Prime::Util
Crypt::Random::Seed
Bytes::Random::Secure
Bytes::Random::Secure::Tiny
Crypt::PRNG
.SH AUTHORS
.IX Header "AUTHORS"
Dana Jacobsen <dana@acm.org>
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2017 by Dana Jacobsen <dana@acm.org>
.PP
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.