Hi Lukas, thank you for replying. It throws exception, output of ToString() method is below.
System.Security.Cryptography.CryptographicException: Invalid key format.
at Rebex.Security.Cryptography.Pkcs.PrivateKeyInfo.lfxz(Byte[] ccz, Int32 cda, pvvf& cdb, KeyAlgorithm& cdc, String& cdd)
at Rebex.Security.Cryptography.Pkcs.PrivateKeyInfo.Load(Stream input, String password)
at Rebex.Net.SshPrivateKey.worq(Stream adu, String adv)
at Rebex.Net.SshPrivateKey..ctor(Byte[] data, String password)