Ticket #38203

support kex algorithm curve25519-sha256@libssh.org and cipher chacha20-poly1305@openssh.com

Open Date: 2018-04-13 07:37 Last Update: 2018-09-04 14:49

Reporter:
(Anonymous)
Owner:
Status:
Open [Owner assigned]
Component:
MileStone:
Priority:
5 - Medium
Severity:
6
Resolution:
Accepted
Vote
Score: 1
100.0% (1/1)
0.0% (0/1)

Details

Hello,

When I have the following entries in my /etc/ssh/sshd_config, I cannot use terraterm to connect to the machine

KexAlgorithms           curve25519-sha256@libssh.org
HostKeyAlgorithms       ssh-ed25519
Ciphers                 chacha20-poly1305@openssh.com
MACs                    hmac-sha2-512-etm@openssh.com

Error message:

unknown KEX algorithm: curve25519-sha256@libssh.org
Sequentially disabling the entries above, very similar error messages are generated. The only way I am able to successfully login is to completely comment out all four entries.

I'm running OpenSSH_7.7, LibreSSL 2.7.2 on openBSD -current

Attachment File List

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Ticket History (3/6 Histories)

2018-04-13 07:37 Updated by: None
  • New Ticket "Cannot login with ed25519" created
2018-04-16 17:06 Updated by: doda
  • Owner Update from (None) to doda
  • Resolution Update from None to Accepted
  • Component Update from Tera Term to TTSSH
  • Details Updated
Comment

Tera Term does not suport curve25519-sha256@libssh.org kex algorithm and chacha20-poly1305@openssh.com cipher.

These algorithms support is planned for the next release.

2018-04-16 19:50 Updated by: maya
  • Type Update from Bugs to Feature Requests
  • Summary Updated
Comment

host key algorithm ssh-ed25519 and mac hmac-sha2-512-etm@openssh.com are already supported.

2018-06-01 12:53 Updated by: doda
2018-09-01 09:01 Updated by: None
2018-09-04 14:49 Updated by: maya

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