Question : Connecting to an SFTP server using a CA

We have an old program that is used to SFTP to a server and upload some files, the application is called Sterling Commerge Connect:Enterprise Client. They no longer support this client and we would rather not use this anymore for this process. I am having some issues finding a replacement. The key file looks like this

RSA Commercial CA / Verisign - exp. Jan 7, 2010
-----BEGIN CERTIFICATE-----
bunchofrandomcharacters
-----END CERTIFICATE-----

Thawte Server CA, 1996.07.31 - 2020.12.31
-----BEGIN CERTIFICATE-----
bunchofrandomcharacters
-----END CERTIFICATE-----

I have found several SFTP clients that use SSH but I cant find anything that uses a certificate like this, anybody have any idea of how I might be able to do this or what other software I could use?

Answer : Connecting to an SFTP server using a CA

a couple possibilities

FTP Commander: http://www.internet-soft.com/
CuteFTP i think handles certs in the pro version:  http://www.cuteftp.com/products/index.asp
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