I'm using git in PowerShell on Windows. I made sure ssh-agent is running, and ssh-add has my private key.
$ Get-Service ssh-agent
Status Name DisplayName
------ ---- -----------
Running ssh-agent OpenSSH Authentication Agent
$ ssh-add -l
256 SHA256:2MDH36ZZcM1uf9wQ2tsMj4NROkiGeKUD CwBsVXrKXY [email protected] (ED25519)
But git still asks for passphrase every time. I tried to debug by setting GIT_SSH_COMMAND="ssh -vvv", but couldn't understand what's wrong. Below is the verbose output when I run git push.
$ git push
OpenSSH_8.5p1, OpenSSL 1.1.1k 25 Mar 2021
debug1: Reading configuration data /etc/ssh/ssh_config
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/c/Users/username/.ssh/known_hosts'
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/c/Users/username/.ssh/known_hosts2'
debug2: resolving "github.com" port 22
debug3: ssh_connect_direct: entering
debug1: Connecting to github.com [140.82.114.4] port 22.
debug3: set_sock_tos: set socket 3 IP_TOS 0x48
debug1: Connection established.
debug1: identity file /c/Users/username/.ssh/id_rsa type -1
debug1: identity file /c/Users/username/.ssh/id_rsa-cert type -1
debug1: identity file /c/Users/username/.ssh/id_dsa type -1
debug1: identity file /c/Users/username/.ssh/id_dsa-cert type -1
debug1: identity file /c/Users/username/.ssh/id_ecdsa type -1
debug1: identity file /c/Users/username/.ssh/id_ecdsa-cert type -1
debug1: identity file /c/Users/username/.ssh/id_ecdsa_sk type -1
debug1: identity file /c/Users/username/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /c/Users/username/.ssh/id_ed25519 type 3
debug1: identity file /c/Users/username/.ssh/id_ed25519-cert type -1
debug1: identity file /c/Users/username/.ssh/id_ed25519_sk type -1
debug1: identity file /c/Users/username/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /c/Users/username/.ssh/id_xmss type -1
debug1: identity file /c/Users/username/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.5
debug1: Remote protocol version 2.0, remote software version babeld-7f91b4d6
debug1: compat_banner: no match: babeld-7f91b4d6
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to github.com:22 as 'git'
debug3: record_hostkey: found key type ED25519 in file /c/Users/username/.ssh/known_hosts:1
debug3: record_hostkey: found key type RSA in file /c/Users/username/.ssh/known_hosts:2
debug3: record_hostkey: found key type ECDSA in file /c/Users/username/.ssh/known_hosts:3
debug3: load_hostkeys_file: loaded 3 keys from github.com
debug1: load_hostkeys: fopen /c/Users/username/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug3: order_hostkeyalgs: have matching best-preference key type [email protected], using HostkeyAlgorithms verbatim
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],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,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,3des-cbc,aes256-cbc,aes192-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,3des-cbc,aes256-cbc,aes192-cbc
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256
debug2: host key algorithms: ssh-ed25519,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr
debug2: ciphers stoc: [email protected],[email protected],[email protected],aes256-ctr,aes192-ctr,aes128-ctr
debug2: MACs ctos: [email protected],[email protected],hmac-sha2-512,hmac-sha2-256
debug2: MACs stoc: [email protected],[email protected],hmac-sha2-512,hmac-sha2-256
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256: DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU
debug3: record_hostkey: found key type ED25519 in file /c/Users/username/.ssh/known_hosts:1
debug3: record_hostkey: found key type RSA in file /c/Users/username/.ssh/known_hosts:2
debug3: record_hostkey: found key type ECDSA in file /c/Users/username/.ssh/known_hosts:3
debug3: load_hostkeys_file: loaded 3 keys from github.com
debug1: load_hostkeys: fopen /c/Users/username/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: Host 'github.com' is known and matches the ED25519 host key.
debug1: Found key in /c/Users/username/.ssh/known_hosts:1
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: /c/Users/username/.ssh/id_rsa
debug1: Will attempt key: /c/Users/username/.ssh/id_dsa
debug1: Will attempt key: /c/Users/username/.ssh/id_ecdsa
debug1: Will attempt key: /c/Users/username/.ssh/id_ecdsa_sk
debug1: Will attempt key: /c/Users/username/.ssh/id_ed25519 ED25519 SHA256:2MDH36ZZcM1uf9wQ2tsMj4NROkiGeKUD CwBsVXrKXY
debug1: Will attempt key: /c/Users/username/.ssh/id_ed25519_sk
debug1: Will attempt key: /c/Users/username/.ssh/id_xmss
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256,ssh-rsa>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /c/Users/username/.ssh/id_rsa
debug3: no such identity: /c/Users/username/.ssh/id_rsa: No such file or directory
debug1: Trying private key: /c/Users/username/.ssh/id_dsa
debug3: no such identity: /c/Users/username/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /c/Users/username/.ssh/id_ecdsa
debug3: no such identity: /c/Users/username/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /c/Users/username/.ssh/id_ecdsa_sk
debug3: no such identity: /c/Users/username/.ssh/id_ecdsa_sk: No such file or directory
debug1: Offering public key: /c/Users/username/.ssh/id_ed25519 ED25519 SHA256:2MDH36ZZcM1uf9wQ2tsMj4NROkiGeKUD CwBsVXrKXY
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: /c/Users/username/.ssh/id_ed25519 ED25519 SHA256:2MDH36ZZcM1uf9wQ2tsMj4NROkiGeKUD CwBsVXrKXY
debug3: sign_and_send_pubkey: ED25519 SHA256:2MDH36ZZcM1uf9wQ2tsMj4NROkiGeKUD CwBsVXrKXY
debug3: sign_and_send_pubkey: signing using ssh-ed25519 SHA256:2MDH36ZZcM1uf9wQ2tsMj4NROkiGeKUD CwBsVXrKXY
Enter passphrase for key '/c/Users/username/.ssh/id_ed25519':
CodePudding user response：
As mentioned here by Ajedi32, if you are using Windows' native implementation of OpenSSH with the native ssh-agent Windows service, make sure that Git for Windows was configured to use that SSH implementation when you installed it
You can force using another ssh.exe with the GIT_SSH environment variable.
Try also to start the agent as a service.
CodePudding user response：
Try to run these two lines one after another in this order in git bash, Windows WLS or bash on real GNU/Linux.
eval ssh-agent -s
ssh-add ~/.ssh/*_rsa
it will ask for passphrase in the second command, and that's it. Each additional action you will need to do (which normally requires passphrase) won't ask you for the passphrase.