edtFtpNet/Pro version 11

Question

Hello!

I am using version 9 of the library with the code:
 

 conn = new SecureFTPConnection();

conn.ServerValidation = SecureFTPServerValidationType.None;

conn.AuthenticationMethod = EnterpriseDT.Net.Ssh.AuthenticationType.Password;

 conn.Protocol = FileTransferProtocol.SFTP;

  conn.PreferredKeyExchangeMethods = EnterpriseDT.Net.Ssh.SSHKeyExchangeMethod.All;

  conn.PreferredCipherAlgorithms = EnterpriseDT.Net.Ssh.SSHCipherAlgorithm.All;

conn.PreferredMACAlgorithms = EnterpriseDT.Net.Ssh.SSHMACAlgorithm.All;

conn.PreferredHostKeyAlgorithms = SSHPublicKeyAlgorithm.ALL;

                conn.UserName = "myid";

                conn.Password = "mypassword";

            conn.ServerAddress = "myserver";

            conn.ServerPort = 22;

            try

            {

                conn.Connect();

            }

            catch (Exception ex)

            {

                label1.Text = ex.Message;

            }

                this.Text = "Connected";

Works fine against a SFTP server on Ubuntu.

Now I'm evaluating version 11 with the trial. But using the new library, with the same code I get:

"Unknown host key algorithm ssh-ed25519"

So is this algorithm not supported in the new version or am I doing something wrong?

Answer 1

Hi,

I would need to see more log entries before the error.

Comments

The whole log before the connect exception. As said, same code but old libraries work OK.

Licence expiry date: 2022-10-16
Trial license
Set LocalDirectory to D:\Projects\WindowsFormsApp1\WindowsFormsApp1\bin\Debug
Licence expiry date: 2022-10-16
Trial license
Setting up fallback kbi prompt based on supplied password
Set socket timeout to 120000
NoDelay=True
Beginning protocol negotiation
Timeout=120000
Sending client version=SSH-2.0-edtFTPnet/PRO_11.1.0.0
Starting Receive thread
Receive received 41 bytes
offset=0,length=41
Server version = 'SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.5'
Major string = '2'
Minor string = '0'
Version 2.0
Protocol compatible
Server version=SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.5
Starting key exchange
Sending SSH_MSG_KEXINIT
key exchange method=diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,ext-info-c
hostkey algorithms=ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-dss,ssh-rsa,rsa-sha2-256,rsa-sha2-512
Packet written to socket
Sent SSH_MSG_KEXINIT
Receive received 1056 bytes
Reading SSH_MSG_KEXINIT reply
Processing SSH_MSG_KEXINIT reply
Remote kex alg=curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256
Decided kex alg= DiffieHellmanGroupExchangeSha256
Remote hostkey alg=rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp256,ssh-ed25519
Decided hostkey alg= ECDSAsha2Nistp256
Remote Cipher CS=chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
Decided Cipher C->S= AES_CTR_128
Remote Cipher SC=chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
Decided Cipher S->C= AES_CTR_128
Remote MAC CS=umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
Decided MAC C->S= HMAC_SHA1
Remote MAC SC=umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
Decided MAC S->C= HMAC_SHA1
Remote Comp CS=none,zlib@openssh.com
Decided Comp C->S=None
Remote Comp SC=none,zlib@openssh.com
Decided Comp S->C=None
first_kex_packet_follows=False
Processed SSH_MSG_KEXINIT reply
Sending SSH_MSG_KEX_DH_GEX_REQUEST
Packet written to socket
Sent SSH_MSG_KEX_DH_GEX_REQUEST
Waiting for packet
Receive received 280 bytes
Packet arrived
Processing SSH_MSG_KEX_DH_GEX_GROUP reply
Packet written to socket
Sent SSH_MSG_KEX_DH_GEX_INIT
Waiting for packet
Receive received 748 bytes
ReduceBuffer()
Packet arrived
Processing SSH_MSG_KEX_DH_GEX_REPLY reply
Verifying host key
Processed SSH_MSG_KEX_DH_GEX_REPLY successfully
Sending SSH_MSG_NEWKEYS
Packet written to socket
Sent SSH_MSG_NEWKEYS
Established ciphers
Established MACs
Reading SSH_MSG_NEWKEYS reply
Processing SSH_MSG_NEWKEYS reply
Processed SSH_MSG_NEWKEYS reply
Negotiated new keys successfully
Key exchange complete
Packet written to socket
Receive received 52 bytes
Sent SSH_MSG_SERVICE_REQUEST 'ssh-userauth'
server-sig-algs: ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com
Failed to connect - closing connection
Receive thread finished.
Unknown host key algorithm ssh-ed25519

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Sorry for the delay in answering - this public forum isn't the best way to get support as it isn't monitored daily. Could you open a support ticket here, and attach your log file?
https://enterprisedt.atlassian.net/servicedesk/customer/portal/1/group/1/create/1