Classic ASP
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.)
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Classic ASP
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success = 0

' 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.
set fortuna = Server.CreateObject("Chilkat.Prng")
entropy = fortuna.GetEntropy(32,"base64")
success = fortuna.AddEntropy(entropy,"base64")

set ec = Server.CreateObject("Chilkat.Ecc")

' Generate a random EC private key on the prime256v1 curve.
set privKey = Server.CreateObject("Chilkat.PrivateKey")
success = ec.GenKey("prime256v1",fortuna,privKey)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( ec.LastErrorText) & "</pre>"
    Response.End
End If

' Create the CSR object and set properties.
set csr = Server.CreateObject("Chilkat.Csr")

' Specify your CN
csr.CommonName = "mysubdomain.mydomain.com"

' Create the CSR using the private key.
set bdCsr = Server.CreateObject("Chilkat.BinData")
success = csr.GenCsrBd(privKey,bdCsr)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( csr.LastErrorText) & "</pre>"
    Response.End
End If

' Save the private key and CSR to files.
success = privKey.SavePkcs8EncryptedPemFile("password","c:/temp/qa_output/ec_privkey.pem")

success = bdCsr.WriteFile("c:/temp/qa_output/csr.pem")

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

set http = Server.CreateObject("Chilkat.Http")

set tlsClientCert = Server.CreateObject("Chilkat.Cert")
success = tlsClientCert.LoadFromFile("data/myTlsClientCert.pem")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tlsClientCert.LastErrorText) & "</pre>"
    Response.End
End If

set bdTlsClientCertPrivKey = Server.CreateObject("Chilkat.BinData")
success = bdTlsClientCertPrivKey.LoadFile("data/myTlsClientCert.key.pem")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Failed to load data/myTlsClientCert.key.pem") & "</pre>"
    Response.End
End If

set tlsClientCertPrivKey = Server.CreateObject("Chilkat.PrivateKey")
success = tlsClientCertPrivKey.LoadAnyFormat(bdTlsClientCertPrivKey,"")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tlsClientCertPrivKey.LastErrorText) & "</pre>"
    Response.End
End If

success = tlsClientCert.SetPrivateKey(tlsClientCertPrivKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( tlsClientCert.LastErrorText) & "</pre>"
    Response.End
End If

success = http.SetSslClientCert(tlsClientCert)

http.RequireSslCertVerify = 1

' The body of the HTTP request contains the binary CSR.
set resp = Server.CreateObject("Chilkat.HttpResponse")
url = "https://clientauth.demo.one.digicert.com/.well-known/est/IOT/simplereenroll"
success = http.HttpBd("POST",url,bdCsr,"application/pkcs10",resp)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>"
    Response.End
End If

If (resp.StatusCode <> 200) Then
    Response.Write "<pre>" & Server.HTMLEncode( "response status code = " & resp.StatusCode) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( resp.BodyStr) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed") & "</pre>"
    Response.End
End If

' The response is the Base64 DER of the new certificate.
set myNewCert = Server.CreateObject("Chilkat.Cert")
success = myNewCert.LoadFromBase64(resp.BodyStr)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( myNewCert.LastErrorText) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Cert data = " & resp.BodyStr) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

success = myNewCert.SaveToFile("c:/temp/qa_output/myNewCert.cer")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( myNewCert.LastErrorText) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Failed.") & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

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