(PowerBuilder) Renew a DigiCert Certificate from an EST-enabled profile

Demonstrates how to renew a certificate from an EST-enabled profile in DigiCert​​®​​ Trust Lifecycle Manager. (The certificate must be within the renewal window configured in the certificate profile. The CSR must have same Subject DN values as the original certificate.)

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Fortuna
string ls_Entropy
integer li_Success
oleobject loo_Ec
oleobject loo_PrivKey
oleobject loo_Csr
oleobject loo_BdCsr
oleobject loo_Http
oleobject loo_TlsClientCert
oleobject loo_BdTlsClientCertPrivKey
oleobject loo_TlsClientCertPrivKey
oleobject loo_Resp
oleobject loo_MyNewCert

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

// The example below duplicates the following OpenSSL commands:
// 
// # Name of certificate as argument 1
// 
// # Make new key
// openssl ecparam -name prime256v1 -genkey -noout -out ${1}.key.pem
// 
// # Make csr
// openssl req -new -sha256 -key ${1}.key.pem -out ${1}.p10.csr -subj "/CN=${1}"
// 
// # Request new cert
// curl -v --cacert data/ca.pem --cert data/${1}.pem --key data/${1}.key.pem 
//     --data-binary @${1}.p10.csr -o ${1}.p7.b64 -H "Content-Type: application/pkcs10" https://clientauth.demo.one.digicert.com/.well-known/est/IOT/simplereenroll
// 
// # Convert to PEM
// openssl base64 -d -in ${1}.p7.b64 | openssl pkcs7 -inform DER -outform PEM -print_certs -out ${1}.pem

// ------------------------------------------------------------------------------------------------------------------

// Create a Fortuna PRNG and seed it with system entropy.
// This will be our source of random data for generating the ECC private key.
loo_Fortuna = create oleobject
// Use "Chilkat_9_5_0.Prng" for versions of Chilkat < 10.0.0
li_rc = loo_Fortuna.ConnectToNewObject("Chilkat.Prng")
if li_rc < 0 then
    destroy loo_Fortuna
    MessageBox("Error","Connecting to COM object failed")
    return
end if
ls_Entropy = loo_Fortuna.GetEntropy(32,"base64")
li_Success = loo_Fortuna.AddEntropy(ls_Entropy,"base64")

loo_Ec = create oleobject
// Use "Chilkat_9_5_0.Ecc" for versions of Chilkat < 10.0.0
li_rc = loo_Ec.ConnectToNewObject("Chilkat.Ecc")

// Generate a random EC private key on the prime256v1 curve.
loo_PrivKey = loo_Ec.GenEccKey("prime256v1",loo_Fortuna)
if loo_Ec.LastMethodSuccess <> 1 then
    Write-Debug loo_Ec.LastErrorText
    destroy loo_Fortuna
    destroy loo_Ec
    return
end if

// Create the CSR object and set properties.
loo_Csr = create oleobject
// Use "Chilkat_9_5_0.Csr" for versions of Chilkat < 10.0.0
li_rc = loo_Csr.ConnectToNewObject("Chilkat.Csr")

// Specify your CN
loo_Csr.CommonName = "mysubdomain.mydomain.com"

// Create the CSR using the private key.
loo_BdCsr = create oleobject
// Use "Chilkat_9_5_0.BinData" for versions of Chilkat < 10.0.0
li_rc = loo_BdCsr.ConnectToNewObject("Chilkat.BinData")

li_Success = loo_Csr.GenCsrBd(loo_PrivKey,loo_BdCsr)
if li_Success = 0 then
    Write-Debug loo_Csr.LastErrorText
    destroy loo_PrivKey
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    return
end if

// Save the private key and CSR to files.
loo_PrivKey.SavePkcs8EncryptedPemFile("password","c:/temp/qa_output/ec_privkey.pem")
destroy loo_PrivKey
loo_BdCsr.WriteFile("c:/temp/qa_output/csr.pem")

// ----------------------------------------------------------------------
// Now do the CURL request to POST the CSR and get the new certificate.

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")

loo_TlsClientCert = create oleobject
// Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
li_rc = loo_TlsClientCert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_TlsClientCert.LoadFromFile("data/myTlsClientCert.pem")
if li_Success = 0 then
    Write-Debug loo_TlsClientCert.LastErrorText
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    return
end if

loo_BdTlsClientCertPrivKey = create oleobject
// Use "Chilkat_9_5_0.BinData" for versions of Chilkat < 10.0.0
li_rc = loo_BdTlsClientCertPrivKey.ConnectToNewObject("Chilkat.BinData")

li_Success = loo_BdTlsClientCertPrivKey.LoadFile("data/myTlsClientCert.key.pem")
if li_Success = 0 then
    Write-Debug "Failed to load data/myTlsClientCert.key.pem"
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    return
end if

loo_TlsClientCertPrivKey = create oleobject
// Use "Chilkat_9_5_0.PrivateKey" for versions of Chilkat < 10.0.0
li_rc = loo_TlsClientCertPrivKey.ConnectToNewObject("Chilkat.PrivateKey")

li_Success = loo_TlsClientCertPrivKey.LoadAnyFormat(loo_BdTlsClientCertPrivKey,"")
if li_Success = 0 then
    Write-Debug loo_TlsClientCertPrivKey.LastErrorText
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    destroy loo_TlsClientCertPrivKey
    return
end if

li_Success = loo_TlsClientCert.SetPrivateKey(loo_TlsClientCertPrivKey)
if li_Success = 0 then
    Write-Debug loo_TlsClientCert.LastErrorText
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    destroy loo_TlsClientCertPrivKey
    return
end if

loo_Http.SetSslClientCert(loo_TlsClientCert)

loo_Http.RequireSslCertVerify = 1

// The body of the HTTP request contains the binary CSR.
loo_Resp = loo_Http.PBinaryBd("POST","https://clientauth.demo.one.digicert.com/.well-known/est/IOT/simplereenroll",loo_BdCsr,"application/pkcs10",0,0)
if loo_Http.LastMethodSuccess = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    destroy loo_TlsClientCertPrivKey
    return
end if

if loo_Resp.StatusCode <> 200 then
    Write-Debug "response status code = " + string(loo_Resp.StatusCode)
    Write-Debug loo_Resp.BodyStr
    Write-Debug "Failed"
    destroy loo_Resp
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    destroy loo_TlsClientCertPrivKey
    return
end if

// The response is the Base64 DER of the new certificate.
loo_MyNewCert = create oleobject
// Use "Chilkat_9_5_0.Cert" for versions of Chilkat < 10.0.0
li_rc = loo_MyNewCert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_MyNewCert.LoadFromBase64(loo_Resp.BodyStr)
if li_Success = 0 then
    Write-Debug loo_MyNewCert.LastErrorText
    Write-Debug "Cert data = " + loo_Resp.BodyStr
    Write-Debug "Failed."
    destroy loo_Resp
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    destroy loo_TlsClientCertPrivKey
    destroy loo_MyNewCert
    return
end if

destroy loo_Resp
li_Success = loo_MyNewCert.SaveToFile("c:/temp/qa_output/myNewCert.cer")
if li_Success = 0 then
    Write-Debug loo_MyNewCert.LastErrorText
    Write-Debug "Failed."
    destroy loo_Fortuna
    destroy loo_Ec
    destroy loo_Csr
    destroy loo_BdCsr
    destroy loo_Http
    destroy loo_TlsClientCert
    destroy loo_BdTlsClientCertPrivKey
    destroy loo_TlsClientCertPrivKey
    destroy loo_MyNewCert
    return
end if

Write-Debug "Success."


destroy loo_Fortuna
destroy loo_Ec
destroy loo_Csr
destroy loo_BdCsr
destroy loo_Http
destroy loo_TlsClientCert
destroy loo_BdTlsClientCertPrivKey
destroy loo_TlsClientCertPrivKey
destroy loo_MyNewCert