Writing a batch file that enters a password when prompted

I'm writing a batch file that runs the below command

winscp sftp://username:password@host.com:22 /privatekey=pgp530.ppk

The output is as follows

Searching for hos开发者_如何学Pythont... Connecting to host... Authenticating... Using username "username". Authenticating with public key "imported-openssh-key". Passphrase for key 'imported-openssh-key':

Is there any way to have the batch file enter the passphrase when prompted? Thanks!

Why not just create a private key without a password, or remove the password from the private key?

It'll be roughly as secure as passing in a plain-text password to the key.