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There are various parts of the SSH-2 protocol where things are specified using a textual name. Names ending in @putty.projects.tartarus.org
are reserved for allocation by the PuTTY team. Allocated names are documented here.
These names can be sent in a SSH_MSG_CHANNEL_REQUEST
message.
simple@putty.projects.tartarus.org
winadj@putty.projects.tartarus.org
SSH_MSG_CHANNEL_WINDOW_ADJUST
messages as part of its window-size tuning. It can be sent on any type of channel. There is no message-specific data. Servers MUST treat it as an unrecognised request and respond with SSH_MSG_CHANNEL_FAILURE
.
(Some SSH servers get confused by this message, so there is a bug-compatibility mode for disabling it. See section 4.27.3.)
rsa-sha1-draft-00@putty.projects.tartarus.org
rsa-sha256-draft-00@putty.projects.tartarus.org
rsa1024-sha1-draft-01@putty.projects.tartarus.org
rsa1024-sha256-draft-01@putty.projects.tartarus.org
rsa2048-sha256-draft-01@putty.projects.tartarus.org
rsa1024-sha1-draft-02@putty.projects.tartarus.org
rsa2048-sha512-draft-02@putty.projects.tartarus.org
rsa1024-sha1-draft-03@putty.projects.tartarus.org
rsa2048-sha256-draft-03@putty.projects.tartarus.org
rsa1024-sha1-draft-04@putty.projects.tartarus.org
rsa2048-sha256-draft-04@putty.projects.tartarus.org
rsa1024-sha1
and rsa2048-sha256
.
arcfour128-draft-00@putty.projects.tartarus.org
arcfour256-draft-00@putty.projects.tartarus.org
arcfour128
and arcfour256
.
The SSH agent protocol, which is only specified in an Internet-Draft at the time of writing (draft-miller-ssh-agent
), defines an extension mechanism. These names can be sent in an SSH_AGENTC_EXTENSION
message.
add-ppk@putty.projects.tartarus.org
string
containing a keypair in the PPK format defined in appendix C. Compared to the standard SSH_AGENTC_ADD_IDENTITY
, this extension allows adding keys in encrypted form, with the agent requesting a decryption passphrase from the user on demand, and able to revert the key to encrypted form.
reencrypt@putty.projects.tartarus.org
string
specifying a public key blob, as in SSH_AGENTC_REMOVE_IDENTITY
. Requests that the agent forget any cleartext form of a specific key.
Returns SSH_AGENT_SUCCESS
if the agent ended up holding the key only in encrypted form (even if it was already encrypted); returns SSH_AGENT_EXTENSION_FAILURE
if not (if it wasn't held by the agent at all, or only in cleartext form).
reencrypt-all@putty.projects.tartarus.org
If the agent holds any keys with an encrypted form (or no keys at all), returns SSH_AGENT_SUCCESS
to indicate that no such keys are now held in cleartext form, followed by a uint32
specifying how many keys remain in cleartext form (because the agent didn't hold an encrypted form for them). If the agent holds nothing but keys in cleartext form, returns SSH_AGENT_EXTENSION_FAILURE
.
list-extended@putty.projects.tartarus.org
SSH_AGENT_SUCCESS
followed by a list of identities similar to SSH_AGENT_IDENTITIES_ANSWER
, except that each key has an extra SSH-2 string
at the end. Currently that string
contains a single uint32
flags word, with the following bits defined:
reencrypt
extension can do something useful with it).
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[PuTTY development snapshot 2024-10-24.33881a1]