VB.NET

SSH Authentication using an SSH Certificate

See more SSH Examples

Demonstrates how to authenticate using an SSH certificate. VB.NET

Dim success As Boolean = False

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim sbSshCert As New Chilkat.StringBuilder
success = sbSshCert.LoadFile("qa_data/sshCert/user_ecdsa_key-cert.pub","utf-8")
If (success = False) Then
    Debug.WriteLine("Failed to load user_ecdsa_key-cert.pub")
    Exit Sub
End If


Dim sbPrivKey As New Chilkat.StringBuilder
success = sbPrivKey.LoadFile("qa_data/sshKeys/user_ecdsa_key","utf-8")
If (success = False) Then
    Debug.WriteLine("Failed to load user_ecdsa_key")
    Exit Sub
End If


Dim key As New Chilkat.SshKey
' Provide the password if the user_ecdsa_key is stored in an encrypted format.
key.Password = "secret"
success = key.FromOpenSshPrivateKey(sbPrivKey.GetAsString())
If (success = False) Then
    Debug.WriteLine(key.LastErrorText)
    Exit Sub
End If


' Indicate that the SSH certificate is to be used for authentication.
' The UseSshCertificate method was added in Chilkat v11.0.0
key.UseSshCertificate(sbSshCert.GetAsString())

Dim ssh As New Chilkat.Ssh

Dim hostname As String = "ssh.example.com"
Dim port As Integer = 22
success = ssh.Connect(hostname,port)
If (success <> True) Then
    Debug.WriteLine(ssh.LastErrorText)
    Exit Sub
End If


success = ssh.AuthenticatePk("myLogin",key)
If (success <> True) Then
    Debug.WriteLine(ssh.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Public-Key Authentication using an SSH Certificate was Successful!")