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Final cleanups on key import/export work. Rationalised the UI (so

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that menu options are greyed out helpfully) and added documentation.

[originally from svn r1683]
This commit is contained in:
Simon Tatham
2002-05-15 20:07:11 +00:00
parent ff5241c1ed
commit de3b29f7e5
2 changed files with 205 additions and 83 deletions
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34
doc/pubkey.but
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@ -1,4 +1,4 @@
\versionid $Id: pubkey.but,v 1.14 2002/05/11 16:45:29 simon Exp $
\versionid $Id: pubkey.but,v 1.15 2002/05/15 20:07:11 simon Exp $
\C{pubkey} Using public keys for SSH authentication
@ -330,6 +330,38 @@ find your key file. Once you select the file, PuTTYgen will ask you
for a passphrase (if necessary) and will then display the key
details in the same way as if it had just generated the key.
PuTTYgen can also load SSH2 private keys in OpenSSH's format and
\cw{ssh.com}'s format. Once you have loaded one of these key types,
you can then save it back out as a PuTTY-format key so that you can
use it with PuTTY. The passphrase will be unchanged by this process.
You may want to change the key comment before you save the key,
since OpenSSH's SSH2 key format contains no space for a comment and
\cw{ssh.com}'s default comment format is long and verbose.
\S{puttygen-export} Exporting your private key in an alternative format
\cfg{winhelp-topic}{puttygen.export}
Most SSH1 clients use a standard format for storing private keys on
disk. PuTTY uses this format as well; so if you have generated an
SSH1 private key using OpenSSH or \cw{ssh.com}'s client, you can use
it with PuTTY, and vice versa.
However, SSH2 private keys have no standard format. OpenSSH and
\cw{ssh.com} have different formats, and PuTTY's is different again.
So a key generated with one client cannot immediately be used with
another.
PuTTYgen has the ability to export private keys in OpenSSH format,
or in \cw{ssh.com} format. To do so, select an option from the
\q{Export} menu at the top of the PuTTYgen window. Exporting a key
works exactly like saving it (see \k{puttygen-savepriv}) - you need
to have typed your passphrase in beforehand, and you will be warned
if you are about to save a key without a passphrase.
Note that the export options are only available if you have
generated an SSH2 key.
\H{pubkey-gettingready} Getting ready for public key authentication
Connect to your SSH server using PuTTY with the SSH protocol. When the