My hosting company provides FTP, SFTP and shell access. I need to connect to it and upload our database. We've switched from unsecured FTP to SFTP. I've worked with an FTP library we've been able to upload via FTP but I can't find an SFTP library and it looks like I might have to write one myself. I have the source for the FTP library. Is there any change I need to make to connect via SFTP?