Xbase++

Generate CSR from Pre-Existing Private Key

See more CSR Examples

Demonstrates how to generate a Certificate Signing Request (CSR) from a pre-existing RSA private key.

Note: This example requires Chilkat v9.5.0.65 or greater.

Xbase++

LOCAL nSuccess
LOCAL oPrivKey
LOCAL oCsr
LOCAL cPemStr
LOCAL oFac

nSuccess := 0

//  Note: Requires Chilkat v9.5.0.65 or greater.

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

oPrivKey := CreateObject("Chilkat.PrivateKey")

//  Load the private key from a file.
//  (Chilkat provides the ability to load private keys from many different
//  formats and sources..)
nSuccess := oPrivKey:LoadEncryptedPemFile("qa_data/rsa/privKey1.pem", "password")
IF (.NOT. nSuccess)
    ? oPrivKey:LastErrorText
    oPrivKey:destroy()
    RETURN
ENDIF

//  Create the CSR object and set properties.
oCsr := CreateObject("Chilkat.Csr")

//  Specify the Common Name.  This is the only required property.
//  For SSL/TLS certificates, this would be the domain name. 
//  For email certificates this would be the email address. 
oCsr:CommonName := "mysubdomain.mydomain.com"

//  Country Name (2 letter code)
oCsr:Country := "GB"

//  State or Province Name (full name)
oCsr:State := "Yorks"

//  Locality Name (eg, city)
oCsr:Locality := "York"

//  Organization Name (eg, company)
oCsr:Company := "Internet Widgits Pty Ltd"

//  Organizational Unit Name (eg, secion/division)
oCsr:CompanyDivision := "IT"

//  Email address
oCsr:EmailAddress := "support@mydomain.com"

//  Create the CSR using the private key.
cPemStr := oCsr:GenCsrPem(oPrivKey)
IF (oCsr:LastMethodSuccess != 1)
    ? oCsr:LastErrorText
    oPrivKey:destroy()
    oCsr:destroy()
    RETURN
ENDIF

//  Save the CSR..
oFac := CreateObject("Chilkat.FileAccess")
oFac:WriteEntireTextFile("qa_output/csr1.pem", cPemStr, "utf-8", 0)

//  Show the CSR.
? cPemStr

//  Sample output:
//  The CSR PEM can be checked here:
//  https://www.networking4all.com/en/support/tools/csr+check/
//  Copy-and-paste the PEM into the online CSR Decoding / CSR Verification form

//  	-----BEGIN CERTIFICATE REQUEST-----
//  	MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
//  	bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw
//  	HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxCzAJBgNVBAsMAklUMSMw
//  	IQYJKoZIhvcNAQkBFhRzdXBwb3J0QG15ZG9tYWluLmNvbTCCASIwDQYJKoZIhvcN
//  	AQEBBQADggEPADCCAQoCggEBALnQ0un/wF8whk+gPuiAlf3qvx14jgAOV6Erm6EB
//  	H7WACPCpnKcm/8KP+7uoPiwRQaENhMeCgf45vcivl2p6aAn/spLXyEkXyw2d8wFb
//  	YYAGRkiz4Xf7ASJiKuwcOtORz+sSDzgtdfokHfXU1cYeFE2yQhSdLUY5fMn425+g
//  	KoEEsRSjSDe6AKru4+4iGNrLKd8pB9IA5/jOE139IkWlB9r5fEPD5bUTsgqXk9eb
//  	68O0gc712V2eZK07N24lDmFC4bIMTD4csDWocR5hFHXj7NX7c8sOBDcpEb9mPIk4
//  	elxubnhkfnjhOi4J3lDHcT/0ALnbLhf9LnaiKqs+5VcVZvECAwEAAaAAMA0GCSqG
//  	SIb3DQEBBQUAA4IBAQC0AETLIcP3foh5nbu2hVFS8uCUNZ5hEIR1eXmYZmZoBQq2
//  	26ZAoT4CZwixlggC+n7WvAXJ5Pzxpl4wLV4loTiQzaKPX1w0ERo5ZRwLy0n56oG2
//  	6QG+WTViT1C8rlgtVwkCFNOXr0kSSRs8FdaPllqKxK1hxYSL7zwNpumsk39F2cDt
//  	vhcekvH0V3BuGrQFm3dKN/0azW6GOod9+Vq4VzSyOe3kp15oxLBsZOFOu/REujcw
//  	Tzu2jt1asQKUm60CZ9wNHpYepR0Ww40uP1slbehEaFDa6V8b60/tlHHmBbJ4/fy5
//  	hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
//  	-----END CERTIFICATE REQUEST-----

oPrivKey:destroy()
oCsr:destroy()
oFac:destroy()