On 2025-09-23 02:45, Jakob Bohm via Cygwin wrote:
On 9/19/2025 12:43 PM, Eric Lilja via Cygwin wrote:
I noticed I was missing the "shasum" command in /usr/bin, and was told to
install the package perl-Digest-SHA.
However: The Cygwin setup program displays this message if I select this
package:
Problem 1/1, nothing provides perl5_032 needed by perl-Digest-SHA-6.04-1,
Solution 1/1, default, - do not ask to install perl-Digest-SHA-6.04-1
Looks like the dependency tree for this package is broken?
That utility is now part of perl_base:
$ cygcheck -f /usr/bin/shasum
perl-5.40.3-1
which obsoletes perl-Digest-SHA and many more:
obsoletes: perl-CPAN-Meta, perl-CPAN-Meta-Requirements, perl-CPAN-Meta-YAML,
perl-Carp, perl-Config-Perl-V, perl-Data-Alias, perl-Digest-SHA,
perl-ExtUtils-CBuilder, perl-ExtUtils-MakeMaker, perl-Gnome2,
perl-Gnome2-Canvas, perl-Gnome2-GConf, perl-Gnome2-Rsvg, perl-Gnome2-VFS,
perl-Gnome2-Vte, perl-Gnome2-Wnck, perl-Gtk2, perl-Gtk2-GladeXML,
perl-Gtk2-Notify, perl-Gtk2-SourceView2, perl-Gtk2-Spell, perl-Gtk2-Unique,
perl-Gtk2-WebKit, perl-HTTP-Tiny, perl-IO-Socket-IP, perl-IPC-Cmd, perl-JSON-PP,
perl-Module-Load-Conditional, perl-Module-Metadata, perl-Pod-Escapes,
perl-Pod-Simple, perl-Socket, perl-Test-Harness, perl-Test-Simple,
perl-Test2-Suite, perl-Unicode-Collate, perl-Unicode-Normalize, perl-Win32,
perl-XSLoader, perl-Parse-CPAN-Meta
FYI legacy crc32:
$ cygcheck -f /usr/bin/crc32
perl-Archive-Zip-1.68-4
Note that the sha1sum program worth using is built from source in GNU
coreutils, not the perl script trying to immitate it.
I don't know how to check which Cygwin package contains which file, so
I cannot be sure if /usr/bin/sha1sum.exe is installed by the main
coreutils package or some extra package.
$ cygcheck -f /usr/bin/sha1sum
coreutils-9.0-1
$ cygcheck -f /usr/bin/sum
coreutils-9.0-1
Part of coreutils, `cksum` provides all the legacy sum, crc, md5, and modern
secure hash digest interfaces, choice of command or option selection for most,
binary, hex, or base64 output, un-/tagged, or check:
b2sum, md5sum, sha1sum, sha224sum, sha256sum, sha384sum, sha512sum, sum
-a, --algorithm[=]
sysv equivalent to sum -s
bsd equivalent to sum -r
crc equivalent to cksum
crc32b only available through cksum
md5 equivalent to md5sum
sha1 equivalent to sha1sum
sha224 equivalent to sha224sum
sha256 equivalent to sha256sum
sha384 equivalent to sha384sum
sha512 equivalent to sha512sum
blake2b equivalent to b2sum
sm3 only available through cksum
If you are looking for the recalled SHA-0 algorithm (it was recalled
when it was brand new), I don't know if it is still available as an
"shasum" program.
Original SHA-0:
https://nvlpubs.nist.gov/nistpubs/Legacy/FIPS/NIST.FIPS.180.pdf
Update notice with SHIFT added to XOR:
https://www.govinfo.gov/content/pkg/FR-1994-07-11/html/94-16666.htm
Updated SHA-1:
https://nvlpubs.nist.gov/nistpubs/Legacy/FIPS/fipspub180-1.pdf
SHA history:
https://link.springer.com/rwe/10.1007/978-1-4419-5906-5_615
Source:
https://crypto.stackexchange.com/questions/62055/where-can-i-find-a-description-of-the-sha-0-hash-algorithm
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher but when there is no more to cut
-- Antoine de Saint-Exupéry
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