SshPrivateKeyPath Usage

Greetings,

I can successfully connect SFTP using the WinSCP GUI

I also did confirm that my Private Key file is in the same folder as my application.

When I attempt to connect via c# I use the following code

SessionOptions sessionOptions = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = "securedata.test.com",
UserName = "TestUser",
Password = "Password123",
PortNumber = 22,
SshHostKeyFingerprint = "ssh-rsa 2048 c1:28:69:44:c9:0e:c5:79:ce:8d:21:b1:bb:ba:5a:7c",
SshPrivateKeyPath = "Private_Key.ppk"
};

using (Session session = new Session())
{
// Connect
session.Open(sessionOptions);

I receive the following error, see attached.

Thank you so much for you help!

The relative paths are resolved relatively to the location of winscp.exe (which may not be the same location as your application).

Better use an absolute path.

Path.GetFullPath("Private_Key.ppk")

I have updated my code to:
SshPrivateKeyPath = Path.GetFullPath("Private_Key.ppk")

Now the error list I receive now is:
Authenticating with public key "imported-openssh-key",
Further authentication required
Acess denied.
Authenication failed.

I have also placed WinSCP.exe in the same folder as my application and part of my c# project.

What I am missing or doing wrong?

Many, many thanks!
Nick

Further authentication required

It looks like the server requires a two-factor authentication.

How do you authenticate in the GUI?
Can you show us a log of the GUI session?

Thank you again for all the help! Here is the Session Log from the GUI which is successful:

. 2015-10-28 11:55:20.073 --------------------------------------------------------------------------
. 2015-10-28 11:55:20.073 WinSCP Version 5.7.5 (Build 5665) (OS 6.1.7601 Service Pack 1 - Windows 7 Professional)
. 2015-10-28 11:55:20.073 Configuration: HKCU\Software\Martin Prikryl\WinSCP 2\
. 2015-10-28 11:55:20.073 Log level: Normal
. 2015-10-28 11:55:20.073 Local account: Nick-TP\Nick
. 2015-10-28 11:55:20.074 Working directory: C:\Program Files (x86)\WinSCP
. 2015-10-28 11:55:20.074 Process ID: 11472
. 2015-10-28 11:55:20.074 Command-line: "C:\Program Files (x86)\WinSCP\WinSCP.exe"
. 2015-10-28 11:55:20.074 Time zone: Current: GMT-4, Standard: GMT-5 (Eastern Standard Time), DST: GMT-4 (Eastern Daylight Time), DST Start: 3/8/2015, DST End: 11/1/2015
. 2015-10-28 11:55:20.074 Login time: Wednesday, October 28, 2015 11:55:20 AM
. 2015-10-28 11:55:20.074 --------------------------------------------------------------------------
. 2015-10-28 11:55:20.074 Session name: TEST (Site)
. 2015-10-28 11:55:20.074 Host name: securedata.test.com (Port: 22)
. 2015-10-28 11:55:20.074 User name: Username (Password: Yes, Key file: Yes)
. 2015-10-28 11:55:20.074 Tunnel: No
. 2015-10-28 11:55:20.074 Transfer Protocol: SFTP (SCP)
. 2015-10-28 11:55:20.074 Ping type: -, Ping interval: 30 sec; Timeout: 15 sec
. 2015-10-28 11:55:20.074 Disable Nagle: No
. 2015-10-28 11:55:20.074 Proxy: none
. 2015-10-28 11:55:20.074 Send buffer: 262144
. 2015-10-28 11:55:20.074 SSH protocol version: 2; Compression: No
. 2015-10-28 11:55:20.074 Bypass authentication: No
. 2015-10-28 11:55:20.074 Try agent: Yes; Agent forwarding: Yes; TIS/CryptoCard: No; KI: Yes; GSSAPI: No
. 2015-10-28 11:55:20.074 Ciphers: aes,blowfish,3des,WARN,arcfour,des; Ssh2DES: No
. 2015-10-28 11:55:20.074 KEX: dh-gex-sha1,dh-group14-sha1,dh-group1-sha1,rsa,WARN
. 2015-10-28 11:55:20.074 SSH Bugs: A,A,A,A,A,A,A,A,A,A,A,A
. 2015-10-28 11:55:20.074 Simple channel: Yes
. 2015-10-28 11:55:20.074 Return code variable: Autodetect; Lookup user groups: A
. 2015-10-28 11:55:20.074 Shell: default
. 2015-10-28 11:55:20.075 EOL: 0, UTF: 2
. 2015-10-28 11:55:20.075 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes
. 2015-10-28 11:55:20.075 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No
. 2015-10-28 11:55:20.075 SFTP Bugs: A,A
. 2015-10-28 11:55:20.075 SFTP Server: default
. 2015-10-28 11:55:20.075 Local directory: C:\Users\Nick\Desktop, Remote directory: /ACH, Update: Yes, Cache: Yes
. 2015-10-28 11:55:20.075 Cache directory changes: Yes, Permanent: Yes
. 2015-10-28 11:55:20.075 DST mode: 1
. 2015-10-28 11:55:20.075 --------------------------------------------------------------------------
. 2015-10-28 11:55:20.154 Looking up host "securedata.test.com"
. 2015-10-28 11:55:20.161 Connecting to 205.205.106.103 port 22
. 2015-10-28 11:55:20.321 Server version: SSH-2.0-SSHD
. 2015-10-28 11:55:20.321 Using SSH protocol version 2
. 2015-10-28 11:55:20.321 We claim version: SSH-2.0-WinSCP_release_5.7.5
. 2015-10-28 11:55:20.394 Doing Diffie-Hellman group exchange
. 2015-10-28 11:55:20.586 Doing Diffie-Hellman key exchange with hash SHA-256
. 2015-10-28 11:55:20.842 Verifying host key rsa2 0x10001,0xa04a248fe05c3f48 bb58c888402a1ba0 d1be49698b9cc27a 1a5092aa94e627e0 -removed for security - with fingerprint ssh-rsa 2048 c1:82:96:44:-removed for security
. 2015-10-28 11:55:20.859 Host key matches cached key
. 2015-10-28 11:55:20.859 Host key fingerprint is:
. 2015-10-28 11:55:20.859 ssh-rsa 2048 c1:82:96:44:-removed for security
. 2015-10-28 11:55:20.859 Initialised AES-256 SDCTR client->server encryption
. 2015-10-28 11:55:20.859 Initialised HMAC-SHA1 client->server MAC algorithm
. 2015-10-28 11:55:20.859 Initialised AES-256 SDCTR server->client encryption
. 2015-10-28 11:55:20.859 Initialised HMAC-SHA1 server->client MAC algorithm
. 2015-10-28 11:55:21.048 Reading private key file "C:\Users\Nick\OneDrive\Documents\Business\Clients\CTU\ARS Development\ARS\ARS\Private_Key.ppk"
! 2015-10-28 11:55:21.049 Using username "AsapCruises".
. 2015-10-28 11:55:21.140 Offered public key
. 2015-10-28 11:55:21.318 Offer of public key accepted
! 2015-10-28 11:55:21.318 Authenticating with public key "imported-openssh-key"
. 2015-10-28 11:55:21.670 Sent public key signature
! 2015-10-28 11:55:21.744 Further authentication required
. 2015-10-28 11:55:21.780 Further authentication required
. 2015-10-28 11:55:21.780 Attempting keyboard-interactive authentication
. 2015-10-28 11:55:21.851 Prompt (keyboard interactive, "SSH server: Password Authentication", "Using keyboard-interactive authentication.", "Password: ")
. 2015-10-28 11:55:21.851 Using stored password.
. 2015-10-28 11:55:21.980 Access granted
. 2015-10-28 11:55:21.980 Opening session as main channel
. 2015-10-28 11:55:22.054 Opened main channel
. 2015-10-28 11:55:22.340 Started a shell/command
. 2015-10-28 11:55:22.386 --------------------------------------------------------------------------
. 2015-10-28 11:55:22.386 Using SFTP protocol.
. 2015-10-28 11:55:22.386 Doing startup conversation with host.
> 2015-10-28 11:55:22.439 Type: SSH_FXP_INIT, Size: 5, Number: -1
< 2015-10-28 11:55:22.511 Type: SSH_FXP_VERSION, Size: 33, Number: -1
. 2015-10-28 11:55:22.511 SFTP version 3 negotiated.
. 2015-10-28 11:55:22.511 Unknown server extension newline@vandyke.com="\n"
. 2015-10-28 11:55:22.512 We believe the server has signed timestamps bug
. 2015-10-28 11:55:22.512 We will use UTF-8 strings until server sends an invalid UTF-8 string as with SFTP version 3 and older UTF-8 string are not mandatory
. 2015-10-28 11:55:22.512 Changing directory to "/ACH".
. 2015-10-28 11:55:22.512 Getting real path for '/ACH'
> 2015-10-28 11:55:22.512 Type: SSH_FXP_REALPATH, Size: 13, Number: 16
< 2015-10-28 11:55:22.594 Type: SSH_FXP_NAME, Size: 49, Number: 16
. 2015-10-28 11:55:22.595 Real path is '/ACH'
. 2015-10-28 11:55:22.595 Trying to open directory "/ACH".
> 2015-10-28 11:55:22.595 Type: SSH_FXP_LSTAT, Size: 13, Number: 263
< 2015-10-28 11:55:22.679 Type: SSH_FXP_ATTRS, Size: 29, Number: 263
. 2015-10-28 11:55:22.679 Getting current directory name.
. 2015-10-28 11:55:22.845 Listing directory "/ACH".
> 2015-10-28 11:55:22.845 Type: SSH_FXP_OPENDIR, Size: 13, Number: 523
< 2015-10-28 11:55:22.939 Type: SSH_FXP_HANDLE, Size: 10, Number: 523
> 2015-10-28 11:55:22.939 Type: SSH_FXP_READDIR, Size: 10, Number: 780
< 2015-10-28 11:55:23.011 Type: SSH_FXP_NAME, Size: 316, Number: 780
> 2015-10-28 11:55:23.012 Type: SSH_FXP_READDIR, Size: 10, Number: 1036
< 2015-10-28 11:55:23.089 Type: SSH_FXP_STATUS, Size: 17, Number: 1036
< 2015-10-28 11:55:23.089 Status code: 1
> 2015-10-28 11:55:23.089 Type: SSH_FXP_CLOSE, Size: 10, Number: 1284
. 2015-10-28 11:55:23.089 ..;d;0;2015-10-20T12:54:00.000Z;"7020" [7020];"7014" [7014];rwxr-xr-x;0
. 2015-10-28 11:55:23.090 ROOT.TXT;-;26;2015-10-20T12:54:00.000Z;"7020" [7020];"7014" [7014];rw-r--r--;0
. 2015-10-28 11:55:23.145 Startup conversation with host finished.

OK, so it's indeed a two factor authentication.

Can you post a log file from the code (Session.SessionLogPath)?

martin wrote:

OK, so it's indeed a two factor authentication.

Can you post a log file from the code (Session.SessionLogPath)?

I do not understand how to provide the log file... would you please provide me with an example for C#?

Set

session.SessionLogPath = @"C:\path\winscp.log";