PowerBuilder

Convert Let's Encrypt PEM Files to a PFX

See more PFX/P12 Examples

Demonstrates how to convert the .pem files provided by Let's Encrypt to a single PFX. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_SbPem
oleobject loo_SbFullChainPem
oleobject loo_Pfx
string ls_PfxPassword

li_Success = 0

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

// Let's Encrypt provides four .pem files
// 1. fullchain.pem
// 2. privkey.pem
// 3. cert.pem
// 4. chain.pem

// The cert.pem and chain.pem are redundant. 
// The fullchain.pem is composed of the cert.pem and chain.pem.

// To convert the PEM's to a single .pfx, we don't need the redundant data.
// The privkey.pem and fullchain.pem provide the required data.
// We can ignore cert.pem and chain.pem (because those certs are already found in fullchain.pem).

// We need a single .pem file that contains both the private key, the cert,
// and the certs in the chain of authentication.
// Let's combine priveky.pem and fullchain.pem into a single .pem

loo_SbPem = create oleobject
li_rc = loo_SbPem.ConnectToNewObject("Chilkat.StringBuilder")
if li_rc < 0 then
    destroy loo_SbPem
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_SbPem.LoadFile("qa_data/pem/lets_encrypt/privkey.pem","utf-8")
if li_Success = 0 then
    Write-Debug "Failed to load privkey.pem"
    destroy loo_SbPem
    return
end if

// To be safe, append a blank line..
loo_SbPem.AppendLine("",0)

loo_SbFullChainPem = create oleobject
li_rc = loo_SbFullChainPem.ConnectToNewObject("Chilkat.StringBuilder")

li_Success = loo_SbFullChainPem.LoadFile("qa_data/pem/lets_encrypt/fullchain.pem","utf-8")
if li_Success = 0 then
    Write-Debug "Failed to load fullchain.pem"
    destroy loo_SbPem
    destroy loo_SbFullChainPem
    return
end if

// Append the full cert chain PEM to the private key PEM.
loo_SbPem.AppendSb(loo_SbFullChainPem)

// Load the combined PEM into a Chilkat PFX object.
loo_Pfx = create oleobject
li_rc = loo_Pfx.ConnectToNewObject("Chilkat.Pfx")

li_Success = loo_Pfx.LoadPem(loo_SbPem.GetAsString(),"no password required")
if li_Success = 0 then
    Write-Debug loo_Pfx.LastErrorText
    destroy loo_SbPem
    destroy loo_SbFullChainPem
    destroy loo_Pfx
    return
end if

// Write the PFX w/ a password.
ls_PfxPassword = "secret"
li_Success = loo_Pfx.ToFile(ls_PfxPassword,"qa_output/sample.pfx")
if li_Success = 0 then
    Write-Debug loo_Pfx.LastErrorText
    destroy loo_SbPem
    destroy loo_SbFullChainPem
    destroy loo_Pfx
    return
end if

Write-Debug "Success!"


destroy loo_SbPem
destroy loo_SbFullChainPem
destroy loo_Pfx