sftp -b <batch> refuses to connect

[Ralf Corsepius]

On Sat, 2005-07-02 at 03:58 -0400, Nancy Merckle wrote:
> On Sat, 2 Jul 2005, Ralf Corsepius wrote:
> 
> > On Fri, 2005-07-01 at 18:21 -0400, Nancy Merckle wrote:
> >> On Fri, 1 Jul 2005, Ralf Corsepius wrote:
> >>
> >>>> "sftp -b <batch> user at somesite" refuses to connect:
> >>>>
> >>>> # sftp -b upload.ftp user at somesite
> >>>> Permission denied (publickey,password,keyboard-interactive).
> >>>> Couldn't read packet: Connection reset by peer
> >>>>
> >>>> While "sftp user at somesite", i.e. interactively using sftp, works:
> >>>> # sftp user at somesite
> >>>> Connecting to somesite ...
> >>>> Password: ...
> >>>>
> >>>> ssh and scp access to the same site also works.
> >>
> >> It looks to me like your keys are out of sync.  You may need to
> >> update/regenerate them.
> > Which keys (key-files) are you referring to?
> 
> The password keys... the files that tell the system you are connecting to 
> that you are a trusted user on a trusted system.
Hmm.

> Does "sftp user at somesite" require you to enter a password?
Yes, ...

.. but this set up has worked for years.
.. and it still works interactively.

What has changed with FC4 to cause this issue?

> If it does, then system you are using doesn't recognize whatever "password 
> file" has been set up for automatic connection.  This "password file" can 
> be set up with ssh keys, or through .netrc. (And maybe other ways too, 
> these are the only ones I'm familiar with.)

Debugging has led me to this log:
/usr/bin/ssh \
-o "ForwardAgent no" -o "ClearAllForwardings yes" \
-o "batchmode yes" -o "Protocol 2" \
-luser \
-v -s \
somesite \
sftp

(This is the command internally being used by sftp):

OpenSSH_4.0p1, OpenSSL 0.9.7f 22 Mar 2005
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to somesite [212.112.227.138] port 22.
debug1: Connection established.
debug1: identity file /users/user/.ssh/id_rsa type -1
debug1: identity file /users/user/.ssh/id_dsa type 2
debug1: Remote protocol version 2.0, remote software version
OpenSSH_3.8.1p1 Debian-8.sarge.4
debug1: match: OpenSSH_3.8.1p1 Debian-8.sarge.4 pat OpenSSH_3.*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_4.0
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'somesite' is known and matches the RSA host key.
debug1: Found key in /users/user/.ssh/known_hosts:9
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /users/user/.ssh/id_rsa
debug1: Offering public key: /users/user/.ssh/id_dsa
debug1: Authentications that can continue:
publickey,password,keyboard-interactive
debug1: No more authentication methods to try.
Permission denied (publickey,password,keyboard-interactive).

Does this ring a bell to somebody?

To me it looks as if the remote site is searching for an rsa key, while
I am only offering a dsa key.

Ralf