B4X

Socket TLS Mutual Authentication (Client-Side Certificate)

See more Socket/SSL/TLS Examples

This example demonstrates how to provide a client-side certificate, also known as "two-way authentication" or "mutual authentication" for servers that require a client certificate. B4X

Dim success As Boolean = False

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

Dim sock As ChilkatSocket
sock.Initialize("sock")

'  Set the certificate to be used for mutual TLS authentication
'  (i.e. sets the client-side certificate for two-way TLS authentication)
success = sock.SetSslClientCertPfx("/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx", "pfxPassword")
If success <> True Then
    Log(sock.LastErrorText)
    Return
End If


'  Note: The certificate used for the client-side of TLS mutual authentication
'  must have the associated private key available. (.pfx/.p12 files typically store both
'  the certificate and associated private key.)

'  Establish the connection using the socket object (with client certificate authentication).
Dim bTls As Boolean = True
Dim port As Int = 443
Dim maxWaitMs As Int = 5000
success = sock.Connect("www.example.com", port, bTls, maxWaitMs)
If success <> True Then
    Log("Connect Failure Error Code: " & sock.ConnectFailReason)
    Log(sock.LastErrorText)
    Return
End If


'  At this point, the Socket object is connected and authenticated using the client-side cert

'  ...
'  ...