Bug#774711: tables of debian openssh crypto features

Antoine Beaupré <[email protected]>
Newsgroups gmane.linux.debian.devel.ssh
Organization Debian
Message-ID <87zfrq2jez.fsf__19958.4764124424$1718211272$gmane$org@angela.anarc.at>
So it's been a while this bug was discussed, and even more since when it
was opened.

Things have changed, since. SHA-1 has been retired in OpenSSH 7, for
example...

Is this still relevant?

taggart, how did you generate those nice tables, can you make them
again? :)

On 2015-09-10 16:19:21, Matt Taggart wrote:
> I was interested in what crypto features the ssh in each Debian release 
> supported, to see what disabling some would mean, so I gathered the info. 
> Let me know if you see any errors.
>
> Current versions of openssh as of Sept 10, 2015:
>
> | squeeze-lts | 1:5.5p1-6+squeeze6 |
> |    wheezy   |  1:6.0p1-4+deb7u2  |
> |    jessie   |      1:6.7p1-5     |
> |   stretch   |      1:6.9p1-1     |
> |     sid     |      1:6.9p1-2     |
>
> Tables of crypto features that the openssh in each release of Debian 
> supports. Gathered with ssh -Q(jessie and newer), ssh_config(5) and 
> source(wheezy and squeeze). (These will look better with a fixed width font)
>
> Key types
> | sq | wh | je | st | si | type                                     |
> =====================================================================
> | X  | X  | X  | X  | X  | ssh-rsa                                  |
> | X  | X  | X  | X  | X  | ssh-dss                                  |
> | X  | X  | X  | X  | X  | [email protected]             |
> | X  | X  | X  | X  | X  | [email protected]             |
> | X  | X  | X  | X  | X  | [email protected]             |
> | X  | X  | X  | X  | X  | [email protected]             |
> |    | X  | X  | X  | X  | ecdsa-sha2-nistp256                      |
> |    | X  | X  | X  | X  | ecdsa-sha2-nistp384                      |
> |    | X  | X  | X  | X  | ecdsa-sha2-nistp521                      |
> |    | X  | X  | X  | X  | [email protected] |
> |    | X  | X  | X  | X  | [email protected] |
> |    | X  | X  | X  | X  | [email protected] |
> |    |    | X  | X  | X  | ssh-ed25519                              |
> |    |    | X  | X  | X  | [email protected]         |
>
>
> KexAlgorithms
> | sq | wh | je | st | si | type                                 |
> =================================================================
> | X  | X  | X  |    | X  | diffie-hellman-group-exchange-sha256 |
> | X  | X  | X  |    | X  | diffie-hellman-group-exchange-sha1   |
> | X  | X  | X  |    | X  | diffie-hellman-group14-sha1          |
> | X  | X  | X  |    | X  | diffie-hellman-group1-sha1           |
> |    | X  | X  |    | X  | ecdh-sha2-nistp256                   |
> |    | X  | X  |    | X  | ecdh-sha2-nistp384                   |
> |    | X  | X  |    | X  | ecdh-sha2-nistp521                   |
> |    |    | X  |    | X  | [email protected]         |
>
> Ciphers
> | sq | wh | je | st | si | type                          |
> ==========================================================
> | X  | X  | X  | X  | X  | aes128-ctr                    |
> | X  | X  | X  | X  | X  | aes192-ctr                    |
> | X  | X  | X  | X  | X  | aes256-ctr                    |
> | X  | X  | X  | X  | X  | arcfour                       |
> | X  | X  | X  | X  | X  | arcfour256                    |
> | X  | X  | X  | X  | X  | arcfour128                    |
> | X  | X  | X  | X  | X  | aes128-cbc                    |
> | X  | X  | X  | X  | X  | 3des-cbc                      |
> | X  | X  | X  | X  | X  | blowfish-cbc                  |
> | X  | X  | X  | X  | X  | cast128-cbc                   |
> | X  | X  | X  | X  | X  | aes192-cbc                    |
> | X  | X  | X  | X  | X  | aes256-cbc                    |
> |    |    | X  | X  | X  | [email protected]        |
> |    |    | X  | X  | X  | [email protected]        |
> |    |    | X  | X  | X  | [email protected] |
> |    |    | X  | X  | X  | [email protected]   |
>
> MACs
> | sq | wh | je | st | si   | type                           |
> =============================================================
> | X  | X  | X  | X  | X    | hmac-md5                       |
> | X  | X  | X  | X  | X    | hmac-sha1                      |
> | X  | X  | X  | X  | X    | [email protected]            |
> | X  | X  | X  | X  | X    | hmac-ripemd160                 |
> | ?  | X  | X  | X  | X    | [email protected]     |
> | X  | X  | X  | X  | X    | hmac-sha1-96                   |
> | X  | X  | X  | X  | X    | hmac-md5-96                    |
> | X  | X  | X  | X  | X    | hmac-sha2-256                  |
> | X  | X  |    |    |      | hmac-sha2-256-96               | *
> | X  | X  | X  | X  | X    | hmac-sha2-512                  |
> | X  | X  |    |    |      | hmac-sha2-512-96               | *
> |    |    | X  | X  | X    | [email protected]        |
> |    |    | X  | X  | X    | [email protected]       |
> |    |    | X  | X  | X    | [email protected]  |
> |    |    | X  | X  | X    | [email protected]  |
> |    |    | X  | X  | X    | [email protected]           |
> |    |    | X  | X  | X    | [email protected]       |
> |    |    | X  | X  | X    | [email protected]      |
> |    |    | X  | X  | X    | [email protected] |
> |    |    | X  | X  | X    | [email protected]   |
> |    |    | X  | X  | X    | [email protected]    |
>
> * https://bugzilla.mindrot.org/show_bug.cgi?id=2023
>
> After I have a chance to look at these and think about the implications, I 
> will send another message with thoughts about what disabling weaker things 
> would mean.
>
> HTH,
>
> -- 
> Matt Taggart
> [email protected]
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.