New Post: SSH-2 private key

I need to connect using sftp utilizing private key.
The key file is created using SSH-2 client.
I get "Invalid private key file." error message.

I just want to confirm if SSH-2 keys are supported!!
if not, are you aware of any open source library that support the use of SSH-2 generated keys?
Here is how the header of the key looks like..

---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----
Comment: "[2048-bit dsa,

and it ends with (showing last part of the encrypted key as well) :
sPhKT5RRC1HrFpK4GzMDgRv3+z5pRf+rPV+FT71busXPnsFIJ54t7xQcGCuzPvCS0myyMQ
AIdA==
---- END SSH2 ENCRYPTED PRIVATE KEY ----

Thank you.