Putty-keys are not immediately compatible with the "other" ssh keys. Have you verified that the connection using the keys works with a plain ssh executable?

Alternatively, Google tells me a link that describes how to convert SSH keypairs generated using PuttyGen to ssh-agent keypairs. Maybe simply using the ssh-style key files Just Works.

In reply to Re: Usage of key authentication with Net::SSH::Any by Corion
in thread Usage of key authentication with Net::SSH::Any by grom

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