Please read
https://winscp.net/eng/docs/faq_passphrase
https://winscp.net/eng/docs/library_sessionoptions#privatekeypassphrase

I'm trying to put together a C# .net 3.5 SSIS custom control flow task which uses SFTP. The only problem I'm having to trying to find a way to provide the ppk file with a Public Key. I've looked into the SessionOptions class and I can't find anything at all. Is this possible at all?

I'm receiving the following exception when I attempt to test the connection.
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Connection UnSuccessful
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WinSCP.SessionRemoteException: Authentication log (see session log for details):
Using username "lynze_sftp".
Authenticating with public key "LP_SFTP_TESTING_KEY_20120622".


Authentication failed.
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OK
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