How to generate a public key from a private ECDSA key? D is the private key as JWK. Can A PRNG Be Used To Generate Multiple Private Keys for ECDSA? Dec 20, 2013 I'm trying to connect to a certain host whose only key in the knownhosts file is an ECDSA key, and paramiko is failing saying 'server 'other-server' not found in knownhosts' Investigating into the issue, I added a line to transport.py at line 1792 to print out agreedkeys, and it lists ('ssh-rsa', 'ssh-dss', 'ecdsa-sha2-nistp256'). Added ecdsa-sha2-nistp384 and ecdsa-sha2-nistp521 key authentication support. Didn't have to change too much. The ecdsa module already supported them, so just needed a little work to get the right ssh parameters into ECDSAKey and having it use ecdsa's features for identifying which key size is being used. My new server has sshhostecdsakey and sshhostrsakey files on it already, is this normal? Ask Question Asked 6 years, 3 months ago. Active 6 years. How to create multiple ssh keys? Switch from SSH key-based authentication to normal account login. The host key algorithm and key exchange algorithm is ecdsa-sha2-nistp256 and ecdh-sha2-nistp256 respectively. Referring to RFC 4251 for data type representations, as well as the source code in openSHH (openBSD) this is what I have concatenated. 4 bytes for then length of VC followed by VC; 4 bytes for then length of VS followed by VS.
Generate Ecdsa-sha2-nistp256 Key Largo
Hi,
I install Open SSH on Windows Server and have Winscp on my laptop I can easily connect to server using username and password. There is no problem with sending files to server but when I want to use private key instead of password I have that error. Could you help me ? Thanks
. 2016-11-07 12:09:38.249 --------------------------------------------------------------------------
. 2016-11-07 12:09:38.249 WinSCP Version 5.9.2 (Build 6958) (OS 6.1.7601 Service Pack 1 - Windows 7 Professional)
. 2016-11-07 12:09:38.249 Configuration: HKCUSoftwareMartin PrikrylWinSCP 2
. 2016-11-07 12:09:38.250 Log level: Normal
. 2016-11-07 12:09:38.250 Local account: HP0222User
. 2016-11-07 12:09:38.250 Working directory: C:Program FilesWinSCP
. 2016-11-07 12:09:38.250 Process ID: 3940
. 2016-11-07 12:09:38.250 Command-line: 'C:Program FilesWinSCPWinSCP.exe'
. 2016-11-07 12:09:38.251 Time zone: Current: GMT+0, Standard: GMT+0 (GMT Standard Time), DST: GMT+1 (GMT Daylight Time), DST Start: 27/03/2016, DST End: 30/10/2016
. 2016-11-07 12:09:38.251 Login time: 07 November 2016 12:09:38
. 2016-11-07 12:09:38.251 --------------------------------------------------------------------------
. 2016-11-07 12:09:38.251 Session name: test2 (Site)
. 2016-11-07 12:09:38.251 Host name: ec2-54-171-16-112.eu-west-1.compute.amazonaws.com (Port: 22)
. 2016-11-07 12:09:38.251 User name: sftpuser01 (Password: No, Key file: Yes)
. 2016-11-07 12:09:38.251 Tunnel: No
. 2016-11-07 12:09:38.251 Transfer Protocol: SFTP (SCP)
. 2016-11-07 12:09:38.251 Ping type: Off, Ping interval: 30 sec; Timeout: 15 sec
. 2016-11-07 12:09:38.251 Disable Nagle: No
. 2016-11-07 12:09:38.251 Proxy: None
. 2016-11-07 12:09:38.251 Send buffer: 262144
. 2016-11-07 12:09:38.251 SSH protocol version: 2; Compression: No
. 2016-11-07 12:09:38.251 Bypass authentication: No
. 2016-11-07 12:09:38.251 Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: Yes; GSSAPI: Yes
. 2016-11-07 12:09:38.251 GSSAPI: Forwarding: No
. 2016-11-07 12:09:38.251 Ciphers: aes,chacha20,blowfish,3des,WARN,arcfour,des; Ssh2DES: No
. 2016-11-07 12:09:38.251 KEX: ecdh,dh-gex-sha1,dh-group14-sha1,rsa,WARN,dh-group1-sha1
. 2016-11-07 12:09:38.251 SSH Bugs: Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto
. 2016-11-07 12:09:38.251 Simple channel: Yes
. 2016-11-07 12:09:38.251 Return code variable: Autodetect; Lookup user groups: Auto
. 2016-11-07 12:09:38.252 Shell: default
. 2016-11-07 12:09:38.252 EOL: LF, UTF: Auto
. 2016-11-07 12:09:38.252 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes; Follow directory symlinks: No
. 2016-11-07 12:09:38.252 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No
. 2016-11-07 12:09:38.252 SFTP Bugs: Auto,Auto
. 2016-11-07 12:09:38.252 SFTP Server: default
. 2016-11-07 12:09:38.252 Local directory: default, Remote directory: home, Update: Yes, Cache: Yes
. 2016-11-07 12:09:38.252 Cache directory changes: Yes, Permanent: Yes
. 2016-11-07 12:09:38.252 Recycle bin: Delete to: No, Overwritten to: No, Bin path:
. 2016-11-07 12:09:38.252 DST mode: Unix
. 2016-11-07 12:09:38.252 --------------------------------------------------------------------------
. 2016-11-07 12:09:38.805 Looking up host 'ec2-54-171-16-112.eu-west-1.compute.amazonaws.com' for SSH connection
. 2016-11-07 12:09:38.813 Connecting to 54.171.16.112 port 22
. 2016-11-07 12:09:38.817 We claim version: SSH-2.0-WinSCP_release_5.9.2
. 2016-11-07 12:09:38.859 Server version: SSH-2.0-OpenSSH_7.3
. 2016-11-07 12:09:38.859 We believe remote version has SSH-2 channel request bug
. 2016-11-07 12:09:38.859 Using SSH protocol version 2
. 2016-11-07 12:09:38.859 Have a known host key of type ssh-ed25519
. 2016-11-07 12:09:38.863 Doing ECDH key exchange with curve Curve25519 and hash SHA-256
. 2016-11-07 12:09:40.054 Server also has ecdsa-sha2-nistp256/ssh-rsa host keys, but we don't know any of them
. 2016-11-07 12:09:40.057 Host key fingerprint is:
. 2016-11-07 12:09:40.057 ssh-ed25519 256 5d:cd:05:0a:80:b0:ee:84:7a:66:78:fc:fa:53:0b:d4
. 2016-11-07 12:09:40.057 Verifying host key ssh-ed25519 0x17f6d8a7b1c6fede fe69bbbf0e950a19 f6ae2c01f7bd1fd8 e9cd88c528eaae67 ,0x7485158ed60aeae7 083b670b1d70e32c e8f5ee91a997af12 b33cf56e61bb9a13 with fingerprint ssh-ed25519 256 5d:cd:05:0a:80:b0:ee:84:7a:66:78:fc:fa:53:0b:d4
. 2016-11-07 12:09:40.079 Host key matches cached key
. 2016-11-07 12:09:40.079 Initialised AES-256 SDCTR client->server encryption
. 2016-11-07 12:09:40.079 Initialised HMAC-SHA-256 client->server MAC algorithm
. 2016-11-07 12:09:40.079 Initialised AES-256 SDCTR server->client encryption
. 2016-11-07 12:09:40.079 Initialised HMAC-SHA-256 server->client MAC algorithm
. 2016-11-07 12:09:40.141 Reading key file 'C:UsersUserDesktopkeysprivate1.ppk'
. 2016-11-07 12:09:40.142 Pageant is running. Requesting keys.
. 2016-11-07 12:09:40.142 Pageant has 1 SSH-2 keys
. 2016-11-07 12:09:40.142 Configured key file not in Pageant
! 2016-11-07 12:09:40.142 Using username 'sftpuser01'.
. 2016-11-07 12:09:40.187 Server offered these authentication methods: publickey,password,keyboard-interactive
. 2016-11-07 12:09:40.187 Offered public key
. 2016-11-07 12:09:40.206 Server unexpectedly closed network connection
. 2016-11-07 12:09:40.207 Knocking FTP port.
. 2016-11-07 12:09:41.218 FTP port opened, will suggest using FTP protocol.
* 2016-11-07 12:09:41.236 (EFatal) Server unexpectedly closed network connection.
* 2016-11-07 12:09:41.236 Authentication log (see session log for details):
* 2016-11-07 12:09:41.236 Using username 'sftpuser01'.
* 2016-11-07 12:09:41.236
* 2016-11-07 12:09:41.236 Authentication failed.
* 2016-11-07 12:09:41.236 The server rejected SFTP connection, but it listens for FTP connections.
* 2016-11-07 12:09:41.236
* 2016-11-07 12:09:41.236 Did you want to use FTP protocol instead of SFTP? Prefer using encryption.
I install Open SSH on Windows Server and have Winscp on my laptop I can easily connect to server using username and password. There is no problem with sending files to server but when I want to use private key instead of password I have that error. Could you help me ? Thanks
. 2016-11-07 12:09:38.249 --------------------------------------------------------------------------
. 2016-11-07 12:09:38.249 WinSCP Version 5.9.2 (Build 6958) (OS 6.1.7601 Service Pack 1 - Windows 7 Professional)
. 2016-11-07 12:09:38.249 Configuration: HKCUSoftwareMartin PrikrylWinSCP 2
. 2016-11-07 12:09:38.250 Log level: Normal
. 2016-11-07 12:09:38.250 Local account: HP0222User
. 2016-11-07 12:09:38.250 Working directory: C:Program FilesWinSCP
. 2016-11-07 12:09:38.250 Process ID: 3940
. 2016-11-07 12:09:38.250 Command-line: 'C:Program FilesWinSCPWinSCP.exe'
. 2016-11-07 12:09:38.251 Time zone: Current: GMT+0, Standard: GMT+0 (GMT Standard Time), DST: GMT+1 (GMT Daylight Time), DST Start: 27/03/2016, DST End: 30/10/2016
. 2016-11-07 12:09:38.251 Login time: 07 November 2016 12:09:38
. 2016-11-07 12:09:38.251 --------------------------------------------------------------------------
. 2016-11-07 12:09:38.251 Session name: test2 (Site)
. 2016-11-07 12:09:38.251 Host name: ec2-54-171-16-112.eu-west-1.compute.amazonaws.com (Port: 22)
. 2016-11-07 12:09:38.251 User name: sftpuser01 (Password: No, Key file: Yes)
. 2016-11-07 12:09:38.251 Tunnel: No
. 2016-11-07 12:09:38.251 Transfer Protocol: SFTP (SCP)
. 2016-11-07 12:09:38.251 Ping type: Off, Ping interval: 30 sec; Timeout: 15 sec
. 2016-11-07 12:09:38.251 Disable Nagle: No
. 2016-11-07 12:09:38.251 Proxy: None
. 2016-11-07 12:09:38.251 Send buffer: 262144
. 2016-11-07 12:09:38.251 SSH protocol version: 2; Compression: No
. 2016-11-07 12:09:38.251 Bypass authentication: No
. 2016-11-07 12:09:38.251 Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: Yes; GSSAPI: Yes
. 2016-11-07 12:09:38.251 GSSAPI: Forwarding: No
. 2016-11-07 12:09:38.251 Ciphers: aes,chacha20,blowfish,3des,WARN,arcfour,des; Ssh2DES: No
. 2016-11-07 12:09:38.251 KEX: ecdh,dh-gex-sha1,dh-group14-sha1,rsa,WARN,dh-group1-sha1
. 2016-11-07 12:09:38.251 SSH Bugs: Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto,Auto
. 2016-11-07 12:09:38.251 Simple channel: Yes
. 2016-11-07 12:09:38.251 Return code variable: Autodetect; Lookup user groups: Auto
. 2016-11-07 12:09:38.252 Shell: default
. 2016-11-07 12:09:38.252 EOL: LF, UTF: Auto
. 2016-11-07 12:09:38.252 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes; Follow directory symlinks: No
. 2016-11-07 12:09:38.252 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No
. 2016-11-07 12:09:38.252 SFTP Bugs: Auto,Auto
. 2016-11-07 12:09:38.252 SFTP Server: default
. 2016-11-07 12:09:38.252 Local directory: default, Remote directory: home, Update: Yes, Cache: Yes
. 2016-11-07 12:09:38.252 Cache directory changes: Yes, Permanent: Yes
. 2016-11-07 12:09:38.252 Recycle bin: Delete to: No, Overwritten to: No, Bin path:
. 2016-11-07 12:09:38.252 DST mode: Unix
. 2016-11-07 12:09:38.252 --------------------------------------------------------------------------
. 2016-11-07 12:09:38.805 Looking up host 'ec2-54-171-16-112.eu-west-1.compute.amazonaws.com' for SSH connection
. 2016-11-07 12:09:38.813 Connecting to 54.171.16.112 port 22
. 2016-11-07 12:09:38.817 We claim version: SSH-2.0-WinSCP_release_5.9.2
. 2016-11-07 12:09:38.859 Server version: SSH-2.0-OpenSSH_7.3
. 2016-11-07 12:09:38.859 We believe remote version has SSH-2 channel request bug
. 2016-11-07 12:09:38.859 Using SSH protocol version 2
. 2016-11-07 12:09:38.859 Have a known host key of type ssh-ed25519
. 2016-11-07 12:09:38.863 Doing ECDH key exchange with curve Curve25519 and hash SHA-256
. 2016-11-07 12:09:40.054 Server also has ecdsa-sha2-nistp256/ssh-rsa host keys, but we don't know any of them
. 2016-11-07 12:09:40.057 Host key fingerprint is:
. 2016-11-07 12:09:40.057 ssh-ed25519 256 5d:cd:05:0a:80:b0:ee:84:7a:66:78:fc:fa:53:0b:d4
. 2016-11-07 12:09:40.057 Verifying host key ssh-ed25519 0x17f6d8a7b1c6fede fe69bbbf0e950a19 f6ae2c01f7bd1fd8 e9cd88c528eaae67 ,0x7485158ed60aeae7 083b670b1d70e32c e8f5ee91a997af12 b33cf56e61bb9a13 with fingerprint ssh-ed25519 256 5d:cd:05:0a:80:b0:ee:84:7a:66:78:fc:fa:53:0b:d4
. 2016-11-07 12:09:40.079 Host key matches cached key
. 2016-11-07 12:09:40.079 Initialised AES-256 SDCTR client->server encryption
. 2016-11-07 12:09:40.079 Initialised HMAC-SHA-256 client->server MAC algorithm
. 2016-11-07 12:09:40.079 Initialised AES-256 SDCTR server->client encryption
. 2016-11-07 12:09:40.079 Initialised HMAC-SHA-256 server->client MAC algorithm
. 2016-11-07 12:09:40.141 Reading key file 'C:UsersUserDesktopkeysprivate1.ppk'
. 2016-11-07 12:09:40.142 Pageant is running. Requesting keys.
. 2016-11-07 12:09:40.142 Pageant has 1 SSH-2 keys
. 2016-11-07 12:09:40.142 Configured key file not in Pageant
! 2016-11-07 12:09:40.142 Using username 'sftpuser01'.
. 2016-11-07 12:09:40.187 Server offered these authentication methods: publickey,password,keyboard-interactive
. 2016-11-07 12:09:40.187 Offered public key
. 2016-11-07 12:09:40.206 Server unexpectedly closed network connection
. 2016-11-07 12:09:40.207 Knocking FTP port.
. 2016-11-07 12:09:41.218 FTP port opened, will suggest using FTP protocol.
* 2016-11-07 12:09:41.236 (EFatal) Server unexpectedly closed network connection.
* 2016-11-07 12:09:41.236 Authentication log (see session log for details):
* 2016-11-07 12:09:41.236 Using username 'sftpuser01'.
* 2016-11-07 12:09:41.236
* 2016-11-07 12:09:41.236 Authentication failed.
* 2016-11-07 12:09:41.236 The server rejected SFTP connection, but it listens for FTP connections.
* 2016-11-07 12:09:41.236
* 2016-11-07 12:09:41.236 Did you want to use FTP protocol instead of SFTP? Prefer using encryption.