OpenSSH accesslog : Logging ciphers, MAC and user agent

How to log the Protocol, KexAlgorithm, Cipher and MAC algorithm negociated by the client and the client's user agent string? What I'm looking for is the OpenSSH equivalent to Apache HTTPD's [CustomLog+LogFormat+mod_ssl](https://httpd.apache.org/docs/2.4/en/mod/mod_ssl.html#logformats) %{SSL_PROTOCOL}x %{SSL_CIPHER}x + %{User-agent}i I want to log (on the server side) the same information that are availiable on the client side : $ ssh -v localhost 2>&1 |grep kex debug1: kex: server->client chacha20-poly1305@openssh.com none debug1: kex: client->server chacha20-poly1305@openssh.com none + $ ssh -v localhost 2>&1 |grep version debug1: Local version string SSH-2.0-OpenSSH_6.7 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7