SSH Host Key Fingerprint

[DouglasMarcelinoDev]

Using WinSCP DLL, I can configure my ssh host key fingerprint like this

SessionOptions sessionOptions = new SessionOptions
{
Protocol = Protocol.Sftp,
HostName = config.Host,
UserName = config.User,
PortNumber = config.Port,
Password = config.Password,
SshHostKeyFingerprint = config.Key
};

where config.Key = "ssh-rsa 2048 [...]="

How can I add this "SshHostKeyFingerprint" using SSH.NET dll?

something like that

client = new SftpClient(config.Host, config.Port, config.User, config.Password, config.Key);

[IgorMilavec]

You need to attach to the HostKeyReceived event before establishing the connection:

var client = new SftpClient(connectionInfo);
client.HostKeyReceived += (sender, e) =>
{
    // e is an Renci.SshNet.Common.HostKeyEventArgs that you can use to check the received host key
    // throw here to abort the connection
};
client.Connect();

[DouglasMarcelinoDev]

@IgorMilavec Well, when I try this, I get this error
Accessing a hash algorithm by manipulating the HashName property is not supported on this platform. Instead, you must instantiate one of the supplied subtypes (such as HMACSHA1.)

var client = new SftpClient(config.Host, config.Port, config.User, config.Password);
client.HostKeyReceived += (sender, e) =>
{

     e.CanTrust = true;

};

client.Connect();

Where I can attach config.Key = "ssh-rsa 2048 [...]="?

[IgorMilavec]

You can not (AFAIK) "attach" the key, you must validate it inside HostKeyReceived event handler. Something like this:

var client = new SftpClient(config.Host, config.Port, config.User, config.Password);
client.HostKeyReceived += (sender, e) =>
{
     e.CanTrust = (FormatKey(e) == config.Key);
};

client.Connect();

Of course you need to implement FormatKey function appropriately.

[IgorMilavec]

@DouglasMarcelinoDev this is a duplicate of #859 , please see a workaround there.