Revision history for Perl module Digest::SHA::PurePerl.

5.72  Mon Sep 24 15:22:08 MST 2012
	- changes only to Digest::SHA for version 5.72

5.71  Wed Feb 29 04:06:10 MST 2012
	- prevented $! from getting clobbered in _bail() routine
		-- thanks to Zefram for patch
	- added example of BITS mode usage to shasum documentation

5.70  Wed Dec 14 02:32:10 MST 2011
	- added BITS mode to addfile method and shasum
		-- partial-byte inputs now possible via files/STDIN
		-- allows shasum to check all 8074 NIST Msg vectors
			-- previously required special programming

5.63  Tue Nov  8 02:36:42 MST 2011
	- added code to allow very large data inputs all at once
		-- previously limited to several hundred MB at a time
		-- many thanks to Thomas Drugeon for his elegant patch
	- removed outdated reference URLs from several test scripts
		-- these URLs aren't essential, and often go stale
		-- thanks to Leon Brocard for spotting this
			-- ref. rt.cpan.org #68740

5.62  Sat May 14 04:00:34 MST 2011
	- removed unnecessary loading of MIME::Base64 module
		-- thanks to dolmen for pointing this out

5.61  Wed Mar  9 05:26:36 MST 2011
	- modified dump/load methods to match behavior of Digest::SHA
		-- in the case of I/O to STDIN/STDOUT
	- addressed minor documentation oversights

5.60  Thu Mar  3 05:26:42 MST 2011
	- added new SHA-512/224 and SHA-512/256 transforms
		-- ref. NIST Draft FIPS 180-4 (February 2011)
	- simplified shasum by removing duplicative text
	- improved efficiency of Addfile
		-- expensive -T test now occurs only in portable mode

5.50  Tue Dec 14 06:20:08 MST 2010
	- adopted convention that '-' always means STDIN
		-- actual filename '-' accessed as './-'
		-- accords with behavior of sha1sum/md5sum
	- corrected undefined subroutine oversight in shasum
		-- inadvertent migration of _bail() from PurePerl.pm

5.49  Sun Dec 12 07:22:04 MST 2010
	- modified Addfile to accept all POSIX filenames
		-- standard allows all characters except NUL and '/'
	- updated shasum to more closely mimic sha1sum/md5sum
		-- added "backslash processing" to handle newlines
			and backslashes in filenames
		-- now accepts all POSIX filenames via Addfile
		-- thanks to Sean Burke for identifying edge cases

5.48  Mon Jan  4 16:32:52 MST 2010
	- fixed "shasum -a0" option (ref. rt.cpan.org #53319)
		-- incorrectly accepted 0 as a valid algorithm
			-- thanks to Zefram for patch
	- updated URL for NIST test vectors
		-- ref. files t/nistbit.t, t/nistbyte.t
			-- thanks to Leon Brocard for patch

5.47  Wed Apr 30 04:00:54 MST 2008
	- moved .pm file to appropriate lib directory
	- minor addition to META.yml

5.46  Wed Apr  9 05:04:00 MST 2008
	- modified _Addfile to recognize leading and trailing
		whitespace in filenames (ref. rt.cpan.org #34690)
	- previous version commandeered the warnings flag ($^W)
		-- this version disables warnings only when
			compiling 64-bit constants

5.45  Tue Jun 26 02:36:00 MST 2007
	- extended portability to earlier Perls
		-- works on Perl 5.003 and later
		-- thanks to Jim Doble for testing on legacy platforms
	- updated META.yml to conform to current META spec (1.3)
	- minor documentation fixes

5.44  Sat Oct 14 00:42:44 MST 2006
	- removed SIGNATURE file from distribution
		-- spurious errors from CPANPLUS can break build

5.43  Sat Aug  5 02:36:18 MST 2006
	- undid Perl Best Practice of favoring 3-argument "open"
		-- 3-arg version uses different semantics for "-"
			causing bugs in addfile/shadump/shaload/shasum

5.42  Mon Jul 24 04:04:40 MST 2006
	- minor code changes suggested by Perl::Critic
		-- e.g. no bareword filehandles, no 2-argument open's
	- updated public key (ref. B538C51C)
		-- previous one (0AF563FE) expired July 2, 2006
	- added documentation to warn that Base64 digests are NOT padded
		-- padding must be done by user if interoperability
			with other software is required

5.41  Sat Jun  3 01:50:46 MST 2006
	- corrected addfile
		-- process $file argument as a filehandle unless passed
			as a SCALAR (which indicates a file name)

5.40  Fri Jun  2 04:00:30 MST 2006
	- modified addfile to accept indirect filehandles
		-- ref. rt.cpan.org #19627 and #19641

5.39  Sun May 28 03:22:24 MST 2006
	- modified shasum to warn rather than die for file errors
		-- to follow conventions of GNU sha1sum/md5sum

5.38  Thu May 25 02:02:02 MST 2006
	- added new capabilities to the "addfile" method
		-- now able to accept file names as well as handles
		-- includes mode for portable digest calculation
			-- thanks to Adam Kennedy for emails and ideas
				ref. File::LocalizeNewlines
	- used expanded addfile interface to simplify shasum (sumfile)
		-- regex a tad less general than 5.37, but handles all
			known newline variants in UNIX/Windows/MacOS
	- enhanced WARNING messages from shasum checkfile processing
		-- to mimic behavior of md5sum

5.37  Mon May  8 04:30:09 MST 2006
	- modified shasum to avoid file slurping (ref. sub sumfile)
	- improved error handling of checksum files in shasum
		-- to better mimic the behavior of md5sum
	- refined line-break regex in shasum (ref. sub sumfile)
		-- catches multiple CR's preceding LF
			thanks to Gisle Aas for suggested patch

5.36  Mon May  8 01:38:36 MST 2006
	- fixed the "portable" option in shasum
		-- normalize line-breaks in text files only

5.35  Thu May  4 16:54:42 MST 2006
	- added "portable" option to shasum
		-- to make digests match across Windows/Unix/MacOS
	- enabled bundling of shasum command line options
		-- to mimic behavior of md5sum
	- removed \r's from text files in t/nist directory
		-- resolves SIGNATURE clashes (rt.cpan.org #18983)
	- specified minimum Perl version for module and Makefile.PL
		-- closes rt.cpan.org #18984

5.34  Thu Feb  2 18:55:40 MST 2006
	- removed Unix-style pathnames in test scripts
		-- causing problems on OpenVMS
		-- thanks to Steve Peters for patch
	- added PERL_CORE check to test scripts
		-- allows module to be built into Perl distribution

5.32  Fri Dec  2 02:32:20 MST 2005
	- added POD section to shasum script
		-- thanks to Gunnar Wolf for patch
	- inserted code in test scripts for POD checking
		-- to recover gracefully if Test::More isn't installed

5.31  Mon Sep  5 00:52:42 MST 2005
	- added standard tests for pod and pod-coverage checking
	- inserted subtest to check for failure when using
		unrecognized SHA algorithm
	- consolidated code for SHA and HMAC-SHA functions
		-- removed 190 lines by building functions at runtime
	- harmonized _sharewind and _shaopen subs with C versions
		-- other minor code cleanups

5.30  Sat Aug 20 16:46:08 MST 2005
	- updated docs with recent NIST statement on SHA-1
		-- advises use of larger and stronger hash functions
			(i.e. SHA-224/256/384/512) for new developments

5.29  Sun Aug 14 04:48:34 MST 2005
	- updated docs with cautionary note about SHA-1

5.28  Wed Nov 10 15:33:20 MST 2004
	- provided more flexible formatting of SHA state files
		-- entries may now contain embedded whitespace
			for improved readability
	- minor code cleanups

5.27  Sun Oct 24 02:54:00 MST 2004
	- minor code cleanups
		-- reduces size of dump files for SHA-1/224/256

5.26  Thu Oct  7 14:52:00 MST 2004
	- streamlined distribution
		-- reduced NIST vector tests from 200 to 20
			-- former number was overkill
			-- distro now downloads and builds more quickly
	- rewrote SYNOPSIS sections in pod file
	- made additional tweaks to t/8-shasum.t for portability
	- cleaned up test scripts

5.25  Sun Sep 12 18:48:00 MST 2004
	- removed non-essential test script
		-- t/8-shasum.t causes problems on sparc64-linux
	- reverted to using eval "require $module" in shasum

5.24  Sun Sep 12 02:50:18 MST 2004
	- modified shasum to use barewords in "require" statements
		-- ref. perl.cpan.testers (157305)

5.23  Thu Sep  9 23:06:18 MST 2004
	- corrected bug in test script
		-- use blib when invoking perl as an external
			command in t/8-shasum.t

5.22  Tue Sep  7 19:12:40 MST 2004
	- minor changes to documentation

5.21  Mon Aug 23 04:02:00 MST 2004
	- improved test script for "shasum" (t/8-shasum.t)
		-- exercises check file option (-c)

5.20  Sun Aug 15 04:24:48 MST 2004
	- introduced "shasum" script
		-- mimics the usage and behavior of "md5sum"
		-- adds "-a" option to select SHA algorithm
		-- for help, just type "shasum -h"

5.10  Fri Aug  6 02:10:12 MST 2004
	- simplified module documentation
		-- made it consistent with Digest::SHA docs

0.06  Tue Aug  3 02:12:40 MST 2004
	- improved performance of SHA-384/512
		-- using inline eval'ed code instead of subroutines
		-- 5.7 x faster than Version 0.05
			-- on alpha-dec_osf, using Gisle's benchmark

0.05  Sun Aug  1 03:56:54 MST 2004
	- fixed HMAC-SHA-384/512 bug
		-- code was using hardwired blocksize of SHA-1/256
	- added test cases to check HMAC-SHA-384/512 behavior
		-- thanks to Adam Woodbury for vectors and script mods
	- corrected misspelling in docs
		-- apologies to Gisle Aas

0.04  Fri Jul  2 01:10:48 MST 2004
	- added support for SHA-384/512
		-- module now offers full functionality of Digest::SHA
		-- however, use of SHA-384/512 requires 64-bit integers
	- included a SIGNATURE file
		-- for stronger authentication of module contents
			-- ref. Module::Signature on CPAN

0.03  Fri Jun 25 00:06:54 MST 2004
	- portability fix
		-- dump files caused warnings on 64-bit platforms
		-- enhanced "dump-load.t" to check correct behavior
	- performance tweak for 64-bit machines
		-- eliminated upper-32-bit masking on left shifts
		-- instead, need to mask only in _digcpy and _shadump

0.02  Tue Jun 22 04:24:00 MST 2004
	- Increased speed of SHA transforms
		-- using optimization ideas from Digest::SHA package
		-- SHA-1       ~  20% faster
		-- SHA-224/256 ~ 120% faster

0.01  Thu Jun 17 00:04:00 MST 2004
	- Initial version, derived from Digest::SHA 5.01
		-- hand-translation from C to Perl
