Unable to authenticate

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Guest

Unable to authenticate

. --------------------------------------------------------------------------
. Session name: admin@192.168.0.3
. Host name: 192.168.0.3 (Port: 22)
. User name: admin (Password: No, Key file: Yes)
. Transfer Protocol: SCP
. SSH protocol version: 2; Compression: No
. Agent forwarding: No; TIS/CryptoCard: No; KI: Yes
. Ciphers: aes,blowfish,3des,WARN,des; Ssh2DES: No
. Ping interval: 0 sec (0 = off); Timeout: 15 sec
. SSH Bugs: -,-,-,-,-,-,-,-,
. Proxy: none
. Return code variable: Autodetect; Lookup user groups: Yes
. Shell: /bin/sh, EOL: 0
. Local directory: default, Remote directory: home, Update: No, Cache: Yes
. Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes
. Alias LS: No, Ign LS warn: Yes, Scp1 Comp: No
. --------------------------------------------------------------------------
. Looking up host "192.168.0.3"
. Connecting to 192.168.0.3 port 22
. Server version: SSH-1.99-OpenSSH_3.5p1
. We claim version: SSH-2.0-WinSCP-release-3.2.1.174
. Using SSH protocol version 2
. Doing Diffie-Hellman group exchange
. Doing Diffie-Hellman key exchange
. Host key fingerprint is:
. ssh-rsa 1024 eb:4b:7a:e5:00:bf:46:4e:e7:3c:70:ad:9d:ff:50:d9
. Initialised AES-256 client->server encryption
. Initialised AES-256 server->client encryption
! Using username "admin".
. Reading private key file "C:\.ssh\id_rsa"
. Unable to use this key file (OpenSSH SSH2 private key)
! Unable to use key file "C:\.ssh\id_rsa" (OpenSSH SSH2 private key)
. Keyboard-interactive authentication refused
. Unable to authenticate
. Attempt to close connection due to fatal exception:

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martin
Site Admin
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Location:
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Re: Unable to authenticate

You cannot use "OpenSSH SSH2 private key" directly with WinSCP. Please convert the jey to PuTTY format using PuTTYgen tool. It is part of WinSCP installation package.

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Guest

Re: Unable to authenticate

I went into Start > Programs > WinSCP3 > RSA Key Tools then ran the PuTTYgen application. I loaded my OpenSSH SSH2 private key file (id_rsa). PuTTYgen told me it had successfully imported it. I then hit save private key. I saved 2 copies: 1) SSH1 (RSA) and 2) SSH2 (RSA).

Basically the same thing as above happened. WinSCP doesn't appear to like my keys and I get prompted for a password. See below for the log. Where am I going wrong?
. --------------------------------------------------------------------------
. WinSCP Version 3.2.1 (Build 174)
. Login time: Saturday, September 13, 2003 9:51:34 AM
. --------------------------------------------------------------------------
. Session name: admin@192.168.0.3
. Host name: 192.168.0.3 (Port: 22)
. User name: admin (Password: No, Key file: Yes)
. Transfer Protocol: SCP
. SSH protocol version: 2; Compression: No
. Agent forwarding: No; TIS/CryptoCard: No; KI: Yes
. Ciphers: aes,blowfish,3des,WARN,des; Ssh2DES: No
. Ping interval: 0 sec (0 = off); Timeout: 15 sec
. SSH Bugs: -,-,-,-,-,-,-,-,
. Proxy: none
. Return code variable: Autodetect; Lookup user groups: Yes
. Shell: default, EOL: 0
. Local directory: default, Remote directory: home, Update: No, Cache: Yes
. Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes
. Alias LS: No, Ign LS warn: Yes, Scp1 Comp: No
. --------------------------------------------------------------------------
. Looking up host "192.168.0.3"
. Connecting to 192.168.0.3 port 22
. Server version: SSH-1.99-OpenSSH_3.4p1
. We claim version: SSH-2.0-WinSCP-release-3.2.1.174
. Using SSH protocol version 2
. Doing Diffie-Hellman group exchange
. Doing Diffie-Hellman key exchange
. Host key fingerprint is:
. ssh-rsa 1024 11:55:b0:03:66:28:56:a9:d0:5e:b1:a5:56:6f:20:4e
. Initialised AES-256 client->server encryption
. Initialised AES-256 server->client encryption
! Using username "cvs".
. Reading private key file "C:\.ssh\id_rsa.PPK"
. Offered public key
. Offer of public key accepted
! Authenticating with public key "imported-openssh-key"
! Unable to load private key
. Keyboard-interactive authentication refused
. Unable to authenticate
. Attempt to close connection due to fatal exception:
* Unable to authenticate
. Closing connection.
* (ESshFatal) Authentication failed.
* Authentication log (see session log for details):
* Using username "admin".
* Authenticating with public key "imported-openssh-key"
* Unable to load private key
* 
* Unable to authenticate

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martin
Site Admin
martin avatar

Re: Unable to authenticate

@Guest: This is different case. I should have written it before. Current version of WinSCP has a bug, which causes it to fail key authentication randomly in about 50% cases. Next release (within few days) will fix it.

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guest
Guest

Re: Unable to authenticate

It worked on the first try! I used the PuTTY key. Thanks. I was curious, what is the difference between the key generated by PuTTY and the one by ssh-keygen? Is it just a formatting thing or is the encryption method totally different?

Thanks for the great software and support:)

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