Visual Basic 6.0

SFTP Authenticate Secure

Demonstrates how to do SFTP password authentication with secure strings.

This example requires Chilkat v9.5.0.71 or greater.

Visual Basic 6.0

Dim success As Long
success = 0

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

' Imagine we've previously saved our encrypted login and password within a JSON config file
' that contains this:

' {
'   "ssh_login": "2+qylFfC56Ck7OQQt/U2/w==",
'   "ssh_password": "5neIq9Jmn0E3p71N6Yc8TA=="
' }

Dim json As New ChilkatJsonObject
success = json.LoadFile("qa_data/passwords/ssh.json")

Dim crypt As New ChilkatCrypt2

' These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
crypt.CryptAlgorithm = "aes"
crypt.CipherMode = "cbc"
crypt.KeyLength = 128
crypt.SetEncodedKey "000102030405060708090A0B0C0D0E0F","hex"
crypt.SetEncodedIV "000102030405060708090A0B0C0D0E0F","hex"
crypt.EncodingMode = "base64"

Dim ssLogin As New ChilkatSecureString
Dim ssPassword As New ChilkatSecureString

' Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
' a randomly generated session key.)
success = crypt.DecryptSecureENC(json.StringOf("ssh_login"),ssLogin)
success = crypt.DecryptSecureENC(json.StringOf("ssh_password"),ssPassword)

Dim sftp As New ChilkatSFtp

success = sftp.Connect("MY-SSH-SERVER-DOMAIN-OR-IP",22)
If (success <> 1) Then
    Debug.Print sftp.LastErrorText
    Exit Sub
End If

' Authenticate using secure strings
success = sftp.AuthenticateSecPw(ssLogin,ssPassword)
If (success <> 1) Then
    Debug.Print sftp.LastErrorText
    Exit Sub
End If

Debug.Print "SFTP Authentication successful."

sftp.Disconnect