debian-user:

I would like to use the Perl module Digest::SHA256 on Debian:

2025-04-02 15:57:50 root@laalaa ~
# cat /etc/debian_version ; uname -a
11.11
Linux laalaa 5.10.0-34-amd64 #1 SMP Debian 5.10.234-1 (2025-02-24)
x86_64 GNU/Linux

2025-04-02 15:58:20 root@laalaa ~
# perl -v

This is perl 5, version 32, subversion 1 (v5.32.1) built for x86_64-linux-gnu-thread-multi
(with 56 registered patches, see perl -V for more detail)

Copyright 1987-2021, Larry Wall

Perl may be copied only under the terms of either the Artistic License
or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl". If you have access to the Internet, point your browser at http://www.perl.org/, the Perl Home Page.

2025-04-02 15:52:40 root@laalaa ~
# perl -e 'use Digest::SHA256'
Can't locate Digest/SHA256.pm in @INC (you may need to install the Digest::SHA256 module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.32.1 /usr/local/share/perl/5.32.1 /usr/lib/x86_64-linux-gnu/perl5/5.32 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.32 /usr/share/perl/5.32 /usr/local/lib/site_perl) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.


The Debian package "libdigest-sha-perl" appears to be what I need:

2025-04-02 15:54:17 root@laalaa ~
# apt-cache search SHA | grep 256 | grep -i perl
libdigest-sha-perl - Perl extension for SHA-1/224/256/384/512,
SHA-512/224 and SHA-512/256


But installing libdigest-sha-perl does not provide Digest::SHA256:

2025-04-02 16:02:55 root@laalaa ~
# apt-get install libdigest-sha-perl
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
libdigest-sha-perl
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/57.0 kB of archives.
After this operation, 136 kB of additional disk space will be used.
Selecting previously unselected package libdigest-sha-perl.
(Reading database ... 174496 files and directories currently installed.) Preparing to unpack .../libdigest-sha-perl_6.02-1+b3_amd64.deb ...
Adding 'diversion of /usr/bin/shasum to /usr/bin/shasum.bundled by libdigest-sha-perl'
Adding 'diversion of /usr/share/man/man1/shasum.1.gz to /usr/share/man/man1/shasum.bundled.1.gz by libdigest-sha-perl'
Unpacking libdigest-sha-perl (6.02-1+b3) ...
Setting up libdigest-sha-perl (6.02-1+b3) ...
Processing triggers for man-db (2.9.4-2) ...

2025-04-02 16:03:02 root@laalaa ~
# perl -e 'use Digest::SHA256'
Can't locate Digest/SHA256.pm in @INC (you may need to install the Digest::SHA256 module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.32.1 /usr/local/share/perl/5.32.1 /usr/lib/x86_64-linux-gnu/perl5/5.32 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.32 /usr/share/perl/5.32 /usr/local/lib/site_perl) at -e line 1.
BEGIN failed--compilation aborted at -e line 1.


Comments or suggestions?


David

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On Wed, Apr 02, 2025 at 16:07:36 -0700, David Christensen wrote:

But installing libdigest-sha-perl does not provide Digest::SHA256:

They are different modules.

https://metacpan.org/pod/Digest::SHA256
https://metacpan.org/pod/Digest::SHA

Digest::SHA256 appears to be much, much older and probably abandoned.

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On 4/2/25 16:18, Greg Wooledge wrote:

On Wed, Apr 02, 2025 at 16:07:36 -0700, David Christensen wrote:

But installing libdigest-sha-perl does not provide Digest::SHA256:

They are different modules.

https://metacpan.org/pod/Digest::SHA256
https://metacpan.org/pod/Digest::SHA

Digest::SHA256 appears to be much, much older and probably abandoned.

2025-04-02 16:31:51 dpchrist@laalaa ~
$ perl -e 'use Digest::SHA qw(sha256_hex); print sha256_hex("hello"), $/' 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824

2025-04-02 16:32:01 dpchrist@laalaa ~
$


Thank you.


David

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Greg Wooledge <greg@wooledge.org> wrote:

On Wed, Apr 02, 2025 at 16:07:36 -0700, David Christensen wrote:

But installing libdigest-sha-perl does not provide Digest::SHA256:

They are different modules.

https://metacpan.org/pod/Digest::SHA256
https://metacpan.org/pod/Digest::SHA

Digest::SHA256 appears to be much, much older and probably abandoned.

FWIW, it seems that the author of the older package has died. :(

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(response bits in-line):

On Wed, Apr 2, 2025 at 4:08 PM David Christensen
<dpchrist@holgerdanske.com> wrote:

I would like to use the Perl module Digest::SHA256 on Debian:
# cat /etc/debian_version ; uname -a
11.11
Linux laalaa 5.10.0-34-amd64 #1 SMP Debian 5.10.234-1 (2025-02-24)
x86_64 GNU/Linux
# perl -e 'use Digest::SHA256'
Can't locate Digest/SHA256.pm in @INC (you may need to install the
The Debian package "libdigest-sha-perl" appears to be what I need:
# apt-cache search SHA | grep 256 | grep -i perl
libdigest-sha-perl - Perl extension for SHA-1/224/256/384/512,
SHA-512/224 and SHA-512/256

Yes.

But installing libdigest-sha-perl does not provide Digest::SHA256:
# apt-get install libdigest-sha-perl
The following NEW packages will be installed:
libdigest-sha-perl
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
# perl -e 'use Digest::SHA256'
Can't locate Digest/SHA256.pm in @INC (you may need to install the

Yes, also the case.

Comments or suggestions?

Debian bullseye 11 (currently oldstable) provides: https://packages.debian.org/bullseye/libdigest-sha-perl
which provides Digest::SHA
As far as I'm aware, Debian bullseye 11 does not provide and has not
provided Digest::SHA256.
See also: https://manpages.debian.org/bookworm/libdigest-sha-perl/Digest::SHA.3pm.en.html Note the syntax will be a bit different, e.g.:
use Digest::SHA;
or, e.g.:
use Digest::SHA qw(sha256 ...);
The syntax on the functions may be different too.
Debian has provided libdigest-sha-perl back to at least 2005, see: https://snapshot.debian.org/binary/libdigest-sha-perl/
But I'm not finding evidence Debian has ever provided Digest::SHA256.
I'd suggest using Debian's libdigest-sha-perl
and use Digest::SHA and make any needed perl code adjustments.

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