Secure File Transfer for Mainframe systems

Hi guys,
I would like to transfer files from UNIX machine to Mainframe system (using UNIX machine as client). The transfer process needs to be secure (i.e. data sent thro network should be encrypted using 128-bit encryption algorithm). I came to know that SFTP server is not available for Mainframe systems and hence using SFTP is not an option. Please let me know any other alternatives for the "Secured File Transfer to Mainframe system". Thanks!

ssh.com has a version available for z/OS

Hi guys,
I would like to transfer files from UNIX machine to Mainframe system (using UNIX machine as client). The transfer process needs to be secure (i.e. data sent thro network should be encrypted using 128-bit encryption algorithm). I came to know that SFTP server is not available for Mainframe systems and hence using SFTP is not an option. Please let me know any other alternatives for the "Secured File Transfer to Mainframe system". Thanks!

Do they have scp? I've found this a simple alternative to sftp although they are usually both available.