> > Yes, I believe so. I verified this by adding/removing my public key to my > EC2 server's ~/.ssh/authorized_keys and then logging into it via SSH. Then > I removed it and the login failed. That said, I can regenerate another key > pair, I don't mind. >
Just for reference, here's the `ssh -v -C ubuntu@[myserver]` log, i.e. logging into my EC2 server. I bolded the line where I think the log deviates from my previous attempts at logging into [email protected] msyang(~) jobs:0 $ ssh -v -C ubuntu@[myserver] OpenSSH_5.2p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to [myserver] [[myserver]] port 22. debug1: Connection established. debug1: identity file /Users/msyang/.ssh/identity type -1 debug1: identity file /Users/msyang/.ssh/id_rsa type 1 debug1: identity file /Users/msyang/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.8p1 Debian-1ubuntu3 debug1: match: OpenSSH_5.8p1 Debian-1ubuntu3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 [email protected] debug1: kex: client->server aes128-ctr hmac-md5 [email protected] debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '[myserver]' is known and matches the RSA host key. debug1: Found key in /Users/msyang/.ssh/known_hosts:3 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering public key: /Users/msyang/.ssh/id_rsa *debug1: Server accepts key: pkalg ssh-rsa blen 277* debug1: Enabling compression at level 6. debug1: Authentication succeeded (publickey). debug1: channel 0: new [client-session] debug1: Requesting [email protected] debug1: Entering interactive session. Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-12-virtual i686) ...

