Dart Support Forum|PowerTCP SFTP & SSH for .NET|Hostkey validation

Author	Forum: PowerTCP SFTP & SSH for .NET Topic: Hostkey validation
moeck From: Cologne, Germany Posts: 10 Member Since: 05/29/18	posted June 13, 2018 6:46 AM Hi, to execute validation I set AcceptAllHostKeys to false and added a handler method to the HostKeyEventHandler. Now I get the hostkey by the HostKeyEventArgs as a byte array. The key to compare has the format "ssh-rsa 2048 df+r....". How can I compare those Keys? I tried several conversions but got no match at all.
Jason Farrar (Admin) From: Oneida, NY USA Posts: 223 Member Since: 07/24/07 Extra Support Options Custom Application Development	posted June 14, 2018 11:30 AM The answer to this depends on what format your key has been stored in, unfortunately I'm not sure which format starts with ssh-rsa 2048. For example, public keys generated by OpenSsh's ssh-keygen utility have the format of: ssh-rsa base64-encoded-key key-originator To compare, one would need to decode the base 64 encoded portion and do a byte comparison against e.HostKey. If you're absolutely sure that your key file only contains the public key for your server you can send it in to support@dart.com and we will be happy to help you resolve the issue.

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