go ssh host key algorithm debug

# running github.com/TheoBrigitte/crypto/blob/master/cmd/debug.go
2021/12/03 12:11:38 knownHostFile: /home/theo/.ssh/known_hosts
2021/12/03 12:11:39 client sent *ssh.kexInitMsg &ssh.kexInitMsg{Cookie:[16]uint8{0xca, 0xd1, 0x29, 0xd, 0x67, 0x22, 0xd9, 0x76, 0xfd, 0x58, 0x73, 0xb7, 0xa1, 0xcd, 0x3a, 0x20}, KexAlgos:[]string{"curve25519-sha256@libssh.org", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "diffie-hellman-group14-sha1"}, ServerHostKeyAlgos:[]string{"rsa-sha2-512-cert-v01@openssh.com", "rsa-sha2-256-cert-v01@openssh.com", "ssh-rsa-cert-v01@openssh.com", "ssh-dss-cert-v01@openssh.com", "ecdsa-sha2-nistp256-cert-v01@openssh.com", "ecdsa-sha2-nistp384-cert-v01@openssh.com", "ecdsa-sha2-nistp521-cert-v01@openssh.com", "ssh-ed25519-cert-v01@openssh.com", "ecdsa-sha2-nistp256", "ecdsa-sha2-nistp384", "ecdsa-sha2-nistp521", "rsa-sha2-512", "rsa-sha2-256", "ssh-rsa", "ssh-dss", "ssh-ed25519"}, CiphersClientServer:[]string{"aes128-gcm@openssh.com", "chacha20-poly1305@openssh.com", "aes128-ctr", "aes192-ctr", "aes256-ctr"}, CiphersServerClient:[]string{"aes128-gcm@openssh.com", "chacha20-poly1305@openssh.com", "aes128-ctr", "aes192-ctr", "aes256-ctr"}, MACsClientServer:[]string{"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96"}, MACsServerClient:[]string{"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96"}, CompressionClientServer:[]string{"none"}, CompressionServerClient:[]string{"none"}, LanguagesClientServer:[]string{}, LanguagesServerClient:[]string{}, FirstKexFollows:false, Reserved:0x0} (<nil>)
2021/12/03 12:11:39 client got *ssh.kexInitMsg &ssh.kexInitMsg{Cookie:[16]uint8{0xd4, 0xff, 0xb8, 0xbb, 0x0, 0x4a, 0x7d, 0xf2, 0x90, 0xfb, 0xff, 0x31, 0x64, 0x1c, 0x57, 0xd2}, KexAlgos:[]string{"curve25519-sha256", "curve25519-sha256@libssh.org", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "diffie-hellman-group-exchange-sha256"}, ServerHostKeyAlgos:[]string{"ssh-ed25519", "ecdsa-sha2-nistp256", "rsa-sha2-512", "rsa-sha2-256", "ssh-rsa"}, CiphersClientServer:[]string{"chacha20-poly1305@openssh.com", "aes256-gcm@openssh.com", "aes128-gcm@openssh.com", "aes256-ctr", "aes192-ctr", "aes128-ctr", "aes256-cbc", "aes192-cbc", "aes128-cbc"}, CiphersServerClient:[]string{"chacha20-poly1305@openssh.com", "aes256-gcm@openssh.com", "aes128-gcm@openssh.com", "aes256-ctr", "aes192-ctr", "aes128-ctr", "aes256-cbc", "aes192-cbc", "aes128-cbc"}, MACsClientServer:[]string{"hmac-sha2-512-etm@openssh.com", "hmac-sha2-256-etm@openssh.com", "hmac-sha2-512", "hmac-sha2-256", "hmac-sha1-etm@openssh.com", "hmac-sha1"}, MACsServerClient:[]string{"hmac-sha2-512-etm@openssh.com", "hmac-sha2-256-etm@openssh.com", "hmac-sha2-512", "hmac-sha2-256", "hmac-sha1-etm@openssh.com", "hmac-sha1"}, CompressionClientServer:[]string{"none"}, CompressionServerClient:[]string{"none"}, LanguagesClientServer:[]string{}, LanguagesServerClient:[]string{}, FirstKexFollows:false, Reserved:0x0} (<nil>)
2021/12/03 12:11:39 client entered key exchange
2021/12/03 12:11:39 ssh.findAgreedAlgorithms
  kex: curve25519-sha256@libssh.org
  hostKey: ecdsa-sha2-nistp256
2021/12/03 12:11:39 ssh.HostKeyCallback
  address: github.com:22
  remote: 140.82.121.3:22
  remoteKey
    type: ecdsa-sha2-nistp256
    data: ecdsa-sha2-nistp25nistp256AIHCc@G:ldd̻P}Kya23n`9S.bMfv`:hrH
2021/12/03 12:11:39 knownhosts.checkAddr
  matching key: ssh-ed25519 github.com:22
2021/12/03 12:11:39 client exited key exchange (first true), err knownhosts: key mismatch
2021/12/03 12:11:39 ssh: handshake failed: knownhosts: key mismatch