ssh2_connect(): Error starting up SSH connection(-5): Unable to exchange encryption keys

[kat35601]

Provider changed there security settings and now I am not able to connect. I get this error "ssh2_connect():  Error starting up SSH connection(-5): Unable to exchange encryption keys "

these are the keys they except now. how to I tell ssh_connect() to use one of these 

 

 

try {
    $connection = ssh2_connect($db['cit_host'], $port);

          if(!$connection){
        throw new \Exception("Could not connect to $host on port $port");
            }
    $auth  = ssh2_auth_password($connection, $user, $pass);
    if(!$auth){
        throw new \Exception("Could not authenticate with username $user and password ");
    }
    $sftp = ssh2_sftp($connection);
      if(!$sftp){
        throw new \Exception("Could not initialize SFTP subsystem.");
    }
    $stream = fopen("ssh2.sftp://" .(int)$sftp.'//Inbox//'.$remoteFile, 'w');
    if (! $stream) {
      echo "<td>$sftp$remoteFile</td>";
        throw new \Exception("Could not open file: ");
    }
    $file = file_get_contents($remoteFile);
    if (fwrite($stream, $file) ===FALSE){
        echo "File Not Written";

 

[requinix]

Odds are the versions of openssl and/or libssh installed on your system are out of date. Update them.