(Visual Basic 6.0) SFTP Authentication using an SSH Certificate

See more SFTP Examples

Note: This example requires Chilkat v11.0.0 or greater.

For more information, see https://www.chilkatsoft.com/understanding_ssh_certificates.asp

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

Dim sbSshCert As New ChilkatStringBuilder
Dim success As Long
success = sbSshCert.LoadFile("qa_data/sshCert/user_ecdsa_key-cert.pub","utf-8")
If (success = 0) Then
    Debug.Print "Failed to load user_ecdsa_key-cert.pub"
    Exit Sub
End If

Dim sbPrivKey As New ChilkatStringBuilder
success = sbPrivKey.LoadFile("qa_data/sshKeys/user_ecdsa_key","utf-8")
If (success = 0) Then
    Debug.Print "Failed to load user_ecdsa_key"
    Exit Sub
End If

Dim key As New ChilkatSshKey
' Provide the password if the user_ecdsa_key is stored in an encrypted format.
key.Password = "secret"
success = key.FromOpenSshPrivateKey(sbPrivKey.GetAsString())
If (success = 0) Then
    Debug.Print 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
success = key.UseSshCertificate(sbSshCert.GetAsString())

Dim sftp As New ChilkatSFtp

Dim hostname As String
hostname = "sftp.example.com"
Dim port As Long
port = 22
success = sftp.Connect(hostname,port)
If (success <> 1) Then
    Debug.Print sftp.LastErrorText
    Exit Sub
End If

success = sftp.AuthenticatePk("myLogin",key)
If (success <> 1) Then
    Debug.Print sftp.LastErrorText
    Exit Sub
End If

Debug.Print "Public-Key Authentication using an SSH Certificate was Successful!"