PowerBuilder

Set the FTP TLS Version and Ciphers

Demonstrates the TLS negotiation properties SslProtocol and SslAllowedCiphers, and reads back the negotiated TlsVersion and TlsCipherSuite after connecting.

Background: SslProtocol sets the allowed (or minimum) TLS version — default lets Chilkat negotiate the best available, while a value like TLS 1.2 or higher enforces a floor for policy compliance. SslAllowedCiphers narrows the offered cipher suites, which most applications should leave at the secure defaults. The read-only TlsVersion and TlsCipherSuite report what was actually agreed, useful for logging and audits.

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PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Ftp

li_Success = 0

loo_Ftp = create oleobject
li_rc = loo_Ftp.ConnectToNewObject("Chilkat.Ftp2")
if li_rc < 0 then
    destroy loo_Ftp
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Ftp.Hostname = "ftp.example.com"
loo_Ftp.Username = "myFtpLogin"

loo_Ftp.AuthTls = 1

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
loo_Ftp.Password = "myPassword"

//  Require at least TLS 1.2.  Accepted values include "default", "TLS 1.3", "TLS 1.2",
//  "TLS 1.2 or higher", and so on.  "default" lets Chilkat negotiate the best available.
loo_Ftp.SslProtocol = "TLS 1.2 or higher"

//  Optionally restrict the cipher suites offered.  Leave empty to use Chilkat's secure defaults.
loo_Ftp.SslAllowedCiphers = "TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256"

li_Success = loo_Ftp.Connect()
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

//  After connecting, read back what was actually negotiated.
Write-Debug "Negotiated TLS version: " + loo_Ftp.TlsVersion
Write-Debug "Negotiated cipher suite: " + loo_Ftp.TlsCipherSuite

li_Success = loo_Ftp.Disconnect()
if li_Success = 0 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if



destroy loo_Ftp