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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) POP3 Login Secure

Demonstrates how to set the POP3 password using a secure string.

This example requires Chilkat v9.5.0.71 or greater.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

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

Dim mailman As New Chilkat.MailMan
Dim success As Boolean

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

'  {
'    "pop3_login": "D7lnlWY291LKMeChlvQq7N/Tg7ieuSB15a+9Ekyd0R4=",
'    "pop3_password": "5neIq9Jmn0E3p71N6Yc8TA=="
'  }

Dim json As New Chilkat.JsonObject
json.LoadFile("qa_data/passwords/pop3.json")

Dim crypt As New Chilkat.Crypt2

'  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 Chilkat.SecureString
Dim ssPassword As New Chilkat.SecureString

'  Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
'  a randomly generated session key.)
crypt.DecryptSecureENC(json.StringOf("pop3_login"),ssLogin)
crypt.DecryptSecureENC(json.StringOf("pop3_password"),ssPassword)

'  Set the POP3 domain, login, and password
mailman.MailHost = "pop.gmail.com"
mailman.PopSsl = True
mailman.MailPort = 995

mailman.PopUsername = ssLogin.Access()
'  Set the PopPassword property via the SetPassword method using the secure string.
mailman.SetPassword("pop3",ssPassword)

'  Connect and authenticate..
success = Await mailman.Pop3ConnectAsync()
If (success <> True) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


success = Await mailman.Pop3AuthenticateAsync()
If (success <> True) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("POP3 login successful.")

Dim numMessages As Integer = Await mailman.GetMailboxCountAsync()
If (numMessages < 0) Then
    Debug.WriteLine(mailman.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Num messages in Inbox = " & numMessages)


Await mailman.Pop3EndSessionAsync()

 

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