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[perl5.git] / lib / Digest.pm

diff --git a/lib/Digest.pm b/lib/Digest.pm
index 9353db1..0cbc417 100644 (file)
--- a/lib/Digest.pm
+++ b/lib/Digest.pm
@@ -3,7 +3,7 @@ package Digest;
 use strict;
 use vars qw($VERSION %MMAP $AUTOLOAD);
 
-$VERSION = "1.05";
+$VERSION = "1.08";
 
 %MMAP = (
   "SHA-1"      => ["Digest::SHA1", ["Digest::SHA", 1], ["Digest::SHA2", 1]],
@@ -12,6 +12,9 @@ $VERSION = "1.05";
   "SHA-512"    => [["Digest::SHA", 512], ["Digest::SHA2", 512]],
   "HMAC-MD5"   => "Digest::HMAC_MD5",
   "HMAC-SHA-1" => "Digest::HMAC_SHA1",
+  "CRC-16"     => [["Digest::CRC", type => "crc16"]],
+  "CRC-32"     => [["Digest::CRC", type => "crc32"]],
+  "CRC-CCITT"  => [["Digest::CRC", type => "crcccitt"]],
 );
 
 sub new
@@ -139,7 +142,8 @@ name of the digest algorithm you want to use.
 The two first forms are simply syntactic sugar which automatically
 load the right module on first use.  The second form allow you to use
 algorithm names which contains letters which are not legal perl
-identifiers, e.g. "SHA-1".
+identifiers, e.g. "SHA-1".  If no implementation for the given algorithm
+can be found, then an exception is raised.
 
 If new() is called as an instance method (i.e. $ctx->new) it will just
 reset the state the object to the state of a newly created object.  No
@@ -219,33 +223,38 @@ This table should give some indication on the relative speed of
 different algorithms.  It is sorted by throughput based on a benchmark
 done with of some implementations of this API:
 
- Algorithm     Size    Implementation                  MB/s
-
- MD4           128     Digest::MD4 v1.1                24.9
- MD5           128     Digest::MD5 v2.30               18.7
- Haval-256     256     Digest::Haval256 v1.0.4         17.0
- SHA-1         160     Digest::SHA1 v2.06              15.3
- SHA-1         160     Digest::SHA v4.0.0              10.1
- SHA-256       256     Digest::SHA2 v1.0.0              7.6
- SHA-256       256     Digest::SHA v4.0.0               6.5
- SHA-384       384     Digest::SHA2 v1.0.0              2.7
- SHA-384       384     Digest::SHA v4.0.0               2.7
- SHA-512       512     Digest::SHA2 v1.0.0              2.7
- SHA-512       512     Digest::SHA v4.0.0               2.7
- Whirlpool     512     Digest::Whirlpool v1.0.2         1.4
- MD2           128     Digest::MD2 v2.03                1.1
-
- Adler-32       32     Digest::Adler32 v0.03            0.2
- MD5           128     Digest::Perl::MD5 v1.5           0.1
-
-These numbers was achieved Nov 2003 with ActivePerl-5.8.1 running
-under Linux on a P-II 350 MHz CPU.  The last 2 entries differ by being
+ Algorithm      Size    Implementation                  MB/s
+
+ MD4            128     Digest::MD4 v1.3               165.0
+ MD5            128     Digest::MD5 v2.33               98.8
+ SHA-256        256     Digest::SHA2 v1.1.0             66.7
+ SHA-1          160     Digest::SHA v4.3.1              58.9
+ SHA-1          160     Digest::SHA1 v2.10              48.8
+ SHA-256        256     Digest::SHA v4.3.1              41.3
+ Haval-256      256     Digest::Haval256 v1.0.4         39.8
+ SHA-384        384     Digest::SHA2 v1.1.0             19.6
+ SHA-512        512     Digest::SHA2 v1.1.0             19.3
+ SHA-384        384     Digest::SHA v4.3.1              19.2
+ SHA-512        512     Digest::SHA v4.3.1              19.2
+ Whirlpool      512     Digest::Whirlpool v1.0.2        13.0
+ MD2            128     Digest::MD2 v2.03                9.5
+
+ Adler-32        32     Digest::Adler32 v0.03            1.3
+ CRC-16          16     Digest::CRC v0.05                1.1
+ CRC-32          32     Digest::CRC v0.05                1.1
+ MD5            128     Digest::Perl::MD5 v1.5           1.0
+ CRC-CCITT       16     Digest::CRC v0.05                0.8
+
+These numbers was achieved Apr 2004 with ActivePerl-5.8.3 running
+under Linux on a P4 2.8 GHz CPU.  The last 5 entries differ by being
 pure perl implementations of the algorithms, which explains why they
 are so slow.
 
 =head1 SEE ALSO
 
-L<Digest::Adler32>, L<Digest::Haval256>, L<Digest::HMAC>, L<Digest::MD2>, L<Digest::MD4>, L<Digest::MD5>, L<Digest::SHA>, L<Digest::SHA1>, L<Digest::SHA2>, L<Digest::Whirlpool>
+L<Digest::Adler32>, L<Digest::CRC>, L<Digest::Haval256>,
+L<Digest::HMAC>, L<Digest::MD2>, L<Digest::MD4>, L<Digest::MD5>,
+L<Digest::SHA>, L<Digest::SHA1>, L<Digest::SHA2>, L<Digest::Whirlpool>
 
 New digest implementations should consider subclassing from L<Digest::base>.
 
@@ -261,7 +270,7 @@ developed by Neil Winton for his C<MD5> module.
 This library is free software; you can redistribute it and/or
 modify it under the same terms as Perl itself.
 
-    Copyright 1998-2001,2003 Gisle Aas.
+    Copyright 1998-2001,2003-2004 Gisle Aas.
     Copyright 1995-1996 Neil Winton.
 
 =cut