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6 Commits

Author SHA1 Message Date
Pádraig Brady
ad6c8e1181 cksum: add --algorithm option to select digest mode 
* src/digest.c: Organize HASH_ALGO_CKSUM to be table driven,
and amalgamate all digest algorithms.
(main): Parse all options if HASH_ALGO_CKSUM, and disallow
--tag, --zero, and --check with the traditional bsd, sysv, and crc
checksums for now.
* src/local.mk: Reorganize to include all digest modules in cksum.
* tests/misc/cksum-a.sh: Add a new test.
* tests/misc/b2sum.sh: Update to default to checking with cksum,
as b2sum's implementation diverges a bit from the others.
* tests/local.mk: Reference the new test.
* doc/coreutils.texi (cksum invocation): Adjust the summary to
identify the new mode, and document the new --algorithm option.
* man/cksum.x: Adjust description to be more general.
* man/*sum.x: Add [See Also] section referencing cksum(1).
* NEWS: Mention the new feature.
 2021-09-15 20:44:16 +01:00
Pádraig Brady
8b22614b9a doc: give a stronger security warning in md5/sha1 man pages 
* man/md5sum.x: Give a more direct warning againt the use
of this hash algorithm for security purposes.
* man/sha1sum.x: Likewise.
Suggested by Jim Meyering.
 2017-03-01 09:33:29 -08:00
Pádraig Brady
109ba4441b doc: indicate sha1 has the same limitations as md5 
* doc/coreutils.texi (sha1sum invocation): Given that a SHA-1
preimage attack has occurred as documented at http://shattered.io/,
document sha1sum as having the same limitations as md5sum.
(md5sum): Parameterize the warning for use in both cases.
* man/md5sum.x: Mention b2sum(1) as a more secure alternative.
* man/sha1sum.x: Give the same warning as done for md5sum(1).
 2017-02-28 20:24:47 -08:00
Bruno Haible
9e900e81db doc: improve the info on md5sum security weaknesses 
* doc/coreutils.texi (md5sum invocation): Mention currently known
security problems. Don't recommend SHA-1 as alternative.
* man/md5sum.x (BUGS): Warn about the vulnerabilities and
reference the SHA-2 based alternatives.
Reported by Simon Josefsson
 2010-08-15 01:02:44 +01:00
Jim Meyering
da60713a1d include summary in [NAME] section 1999-11-02 13:58:56 +00:00
Jim Meyering
f7880af3db . 1998-10-04 03:23:24 +00:00