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Math::Prime::Util::ChaUser3Contributed Perl DocumeMath::Prime::Util::ChaCha(3)

NAME
       Math::Prime::Util::ChaCha - Pure	Perl ChaCha20 CSPRNG

VERSION
       Version 0.73

SYNOPSIS
DESCRIPTION
       A pure Perl implementation of ChaCha20 with a CSPRNG interface.

FUNCTIONS
   csrand
       Takes a binary string as	input and seeds	the internal CSPRNG.

   srand
       A method	for sieving the	CSPRNG with a small value.  This will not be
       secure but can be useful	for simulations	and emulating the system
       "srand".

       With no argument, chooses a random number, seeds	and returns the
       number.	With a single integer argument,	seeds and returns the number.

   irand
       Returns a random	32-bit integer.

   irand64
       Returns a random	64-bit integer.

   random_bytes
       Takes an	unsigned number	"n" as input and returns that many random
       bytes as	a single binary	string.

AUTHORS
       Dana Jacobsen <dana@acm.org>

ACKNOWLEDGEMENTS
       Daniel J. Bernstein wrote the ChaCha family of stream ciphers in	2008
       as an update to the popular Salsa20 cipher from 2005.

       RFC7539:	"ChaCha20 and Poly1305 for IETF	Protocols" was used to create
       both the	C and Perl implementations.  Test vectors from that document
       are used	here as	well.

       For final optimizations I got ideas from	Christopher Madsen's
       Crypt::Salsa20 for how to best work around some of Perl's aggressive
       dynamic typing.	Our core is still about	20% slower than	Salsa20.

COPYRIGHT
       Copyright 2017 by Dana Jacobsen <dana@acm.org>

       This program is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

perl v5.32.1			  2018-11-15	  Math::Prime::Util::ChaCha(3)

NAME | VERSION | SYNOPSIS | DESCRIPTION | FUNCTIONS | AUTHORS | ACKNOWLEDGEMENTS | COPYRIGHT

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