Using SSH private key 1.1 on Tamir .Net SSH library

I'm tasked with replacing a Unix Java application tha开发者_高级运维t loads files onto a SSH server with a C#.Net application using Tamir's OpenSSH library. The SSH server accepts a key that uses "SSH PRIVATE KEY FILE FORMAT 1.1", which Tamir's library doesn't understand. Does anyone know what Windows tools can convert this key, or a .Net library that can read it?

Fortunately, I was granted access to the account and was able to generate a new key that the library can read.