Thank you Norbert Pócs. I could add the missing default algorithms in kex.c and proceed.
Regards, Jijo On Mon, Jan 9, 2023 at 8:27 PM Norbert Pocs <np...@redhat.com> wrote: > Hi Thomas, > > I see the server - > > no match for method kex algos: server > [diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1] > > has only sha1 kex methods enabled, which are disabled by default in > version 0.10 of libssh. Try to enable > the needed kex methods in the configuration file or try to avoid using > sha1 if possible. > > Hope this helps! > > Regards > Norbert Pócs > > > On Mon, Jan 9, 2023 at 3:03 PM Jijo Thomas <jijo7tho...@gmail.com> wrote: > >> Hey folks, >> >> I'm trying to use a ssh_connect using a recently compiled libssh 0.10.4 >> (using openssl 1.1.1k) >> But we ran into a key exchange error. Following is the log. >> >> [2023/01/09 16:37:44.874356, 2] ssh_connect: libssh 0.10.4 (c) 2003-2022 >> Aris Adamantiadis, Andreas Schneider and libssh contributors. Distributed >> under the LGPL, please refer to COPYING file for information about your >> rights, using threading threads_winlock >> [2023/01/09 16:37:44.881334, 3] getai: host x.x.x.x matches an IP address >> [2023/01/09 16:37:44.885324, 2] ssh_socket_connect: Nonblocking connection >> socket: 512 >> [2023/01/09 16:37:44.887321, 2] ssh_connect: Socket connecting, now waiting >> for the callbacks to work >> [2023/01/09 16:37:44.887903, 3] ssh_connect: Actual timeout : 10000 >> [2023/01/09 16:37:45.139544, 3] ssh_socket_pollcallback: Received POLLOUT >> in connecting state >> [2023/01/09 16:37:45.140542, 1] socket_callback_connected: Socket >> connection callback: 1 (0) >> [2023/01/09 16:37:45.140542, 3] ssh_socket_unbuffered_write: Enabling >> POLLOUT for socket >> [2023/01/09 16:37:45.376008, 3] callback_receive_banner: Received banner: >> SSH-2.0-Cisco-1.25 >> [2023/01/09 16:37:45.377005, 2] ssh_client_connection_callback: SSH server >> banner: SSH-2.0-Cisco-1.25 >> [2023/01/09 16:37:45.377005, 2] ssh_analyze_banner: Analyzing banner: >> SSH-2.0-Cisco-1.25 >> [2023/01/09 16:37:45.390968, 3] ssh_client_select_hostkeys: Order of wanted >> host keys: >> "ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256" >> [2023/01/09 16:37:45.391964, 1] ssh_known_hosts_read_entries: Failed to >> open the known_hosts file 'C:\Users\xxxxx/.ssh/known_hosts': No such file or >> directory >> [2023/01/09 16:37:45.391964, 1] ssh_known_hosts_read_entries: Failed to >> open the known_hosts file '/etc/ssh/ssh_known_hosts': No such file or >> directory >> [2023/01/09 16:37:45.391964, 3] ssh_client_select_hostkeys: No key found in >> known_hosts; changing host key method to >> "ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256" >> [2023/01/09 16:37:45.391964, 3] ssh_socket_unbuffered_write: Enabling >> POLLOUT for socket >> [2023/01/09 16:37:45.391964, 3] packet_send2: packet: wrote [type=20, >> len=852, padding_size=7, comp=844, payload=844] >> [2023/01/09 16:37:45.392965, 3] ssh_send_kex: SSH_MSG_KEXINIT sent >> [2023/01/09 16:37:45.626340, 3] ssh_packet_socket_callback: packet: read >> type 20 [len=308,padding=4,comp=303,payload=303] >> [2023/01/09 16:37:45.627339, 3] ssh_packet_process: Dispatching handler for >> packet type 20 >> [2023/01/09 16:37:45.627339, 1] ssh_kex_select_methods: kex error : no >> match for method kex algos: server >> [diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1], client >> [curve25519-sha256,curve25519-sha...@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group18-sha512,diffie-hellman-group16-sha512,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256] >> [2023/01/09 16:37:45.627339, 3] ssh_connect: current state : 9 >> >> >> It is still working fine using libssh 0.9.4 dll >> >> It could be something I missed while compiling the new library. I had >> created the solution using cmake, and compiled the ssh.dll using Visual >> Studio 2017. >> Any leads to solve the problem is appreciated. >> >> >> Regards, >> >> Jijo >> >>
