PowerBuilder

Add a PFX Source (BinData) for S/MIME Decryption

Demonstrates the Chilkat Imap.AddPfxSourceBd method, which adds PFX data held in a BinData as a source of certificates and private keys for S/MIME processing. The first argument is the BinData and the second is the PFX password. Call it once for each additional source.

Note: The certificate path is relative to the application's current working directory. Supply the path to your own certificate file.

Background: When downloading encrypted (S/MIME) email, Chilkat needs the recipient's private key to decrypt it. Adding one or more PFX sources gives Chilkat a pool of keys to search; the matching key is used automatically as messages are fetched. The BinData form is handy when the PFX comes from memory — a database blob or a downloaded buffer — rather than a file on disk. On Windows and macOS the system certificate stores are also searched automatically.

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PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Imap
oleobject loo_BdPfx
string ls_PfxPassword

li_Success = 0

//  Demonstrates the Imap.AddPfxSourceBd method, which adds PFX data (from a BinData) as a
//  source of certificates and private keys for S/MIME decryption.  The 1st argument is the
//  BinData containing the PFX, and the 2nd is the PFX password.

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

loo_Imap.Ssl = 1
loo_Imap.Port = 993

li_Success = loo_Imap.Connect("imap.example.com")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

li_Success = loo_Imap.Login("user@example.com","myPassword")
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    return
end if

//  Load the PFX data into a BinData.
loo_BdPfx = create oleobject
li_rc = loo_BdPfx.ConnectToNewObject("Chilkat.BinData")

li_Success = loo_BdPfx.LoadFile("qa_data/smime.pfx")
if li_Success = 0 then
    Write-Debug loo_BdPfx.LastErrorText
    destroy loo_Imap
    destroy loo_BdPfx
    return
end if

//  The PFX password is not hard-coded in source.  Insert code here to obtain it from an
//  interactive prompt, environment variable, or a secrets vault.

//  Add the PFX as a source for S/MIME certificates and private keys.  Call once per source.
li_Success = loo_Imap.AddPfxSourceBd(loo_BdPfx,ls_PfxPassword)
if li_Success = 0 then
    Write-Debug loo_Imap.LastErrorText
    destroy loo_Imap
    destroy loo_BdPfx
    return
end if

//  Messages downloaded after this are automatically decrypted when a matching key is found.

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



destroy loo_Imap
destroy loo_BdPfx