curl issue https://github.com/curl/curl/issues/7057 was closed with:
"This seems to be purely a libssh2 issue and not a curl one." Curl reports "libssh2/1.7.0" On the same system, ssh reports " OpenSSH_8.5p1, OpenSSL 1.1.1f 31 Mar 2020" The curl code in https://github.com/curl/curl/blob/master/lib/vssh/libssh2.c has a number of defines to control what type of host keys it will accept, including LIBSSH2_KNOWNHOST_KEY_ED25519 Was the curl built with this set? Details are in the curl issue, but here they are again. ----- Here is the curl failure: : curl -vvv -s -T t.cpp sftp://bvoris@nucnuc/tmp/t2.cpp * STATE: INIT => CONNECT handle 0x800085338; line 1634 (connection #-5000) * Added connection 0. The cache now contains 1 members * STATE: CONNECT => RESOLVING handle 0x800085338; line 1680 (connection #0) * family0 == v4, family1 == v6 * Trying 192.168.1.5:22... * STATE: RESOLVING => CONNECTING handle 0x800085338; line 1762 (connection #0) * Connected to nucnuc (192.168.1.5) port 22 (#0) * STATE: CONNECTING => PROTOCONNECT handle 0x800085338; line 1825 (connection #0) * SFTP 0x8000847c8 state change from SSH_STOP to SSH_INIT * Found host nucnuc in /home/BVoris/.ssh/known_hosts * Unknown host key type: 1835008 * SFTP 0x8000847c8 state change from SSH_INIT to SSH_SESSION_FREE * SFTP 0x8000847c8 state change from SSH_SESSION_FREE to SSH_STOP * multi_done * The cache now contains 0 members * SSH DISCONNECT starts now * SSH DISCONNECT is done * Closing connection 0 ----- The curl/libcurl version: curl 7.76.1 (x86_64-pc-cygwin) libcurl/7.76.1 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.9 zstd/1.4.9 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.0.4) libssh2/1.7.0 nghttp2/1.37.0 Release-Date: 2021-04-14 Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp Features: alt-svc AsynchDNS brotli Debug GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz Metalink NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP TrackMemory UnixSockets zstd ----- The known_hosts entry from the client: nucnuc ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICmjvQ5jehz5Jwt1PDGJBSgcXVhoMRnbn/E2p3srSK+c ----- curl is run on CYGWIN_NT-10.0 3.2.0(0.340/5/3) 2021-03-29 08:42 x86_64 Cygwin The target system has: OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n 7 Dec 2017 -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
