PureBasic Requires Chilkat v11.0.0+

Generate Key and Certificate Signing Request (CSR)

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR).

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

PureBasic

IncludeFile "CkFileAccess.pb"
IncludeFile "CkPrivateKey.pb"
IncludeFile "CkCsr.pb"
IncludeFile "CkRsa.pb"

Procedure ChilkatExample()

    success.i = 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.

    ;  First generate an RSA private key.
    rsa.i = CkRsa::ckCreate()
    If rsa.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  Generate a random 2048-bit RSA key.
    privKey.i = CkPrivateKey::ckCreate()
    If privKey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkRsa::ckGenKey(rsa,2048,privKey)
    If success = 0
        Debug CkRsa::ckLastErrorText(rsa)
        CkRsa::ckDispose(rsa)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    EndIf

    ;  Create the CSR object and set properties.
    csr.i = CkCsr::ckCreate()
    If csr.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  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. 
    CkCsr::setCkCommonName(csr, "mysubdomain.mydomain.com")

    ;  Country Name (2 letter code)
    CkCsr::setCkCountry(csr, "GB")

    ;  State or Province Name (full name)
    CkCsr::setCkState(csr, "Yorks")

    ;  Locality Name (eg, city)
    CkCsr::setCkLocality(csr, "York")

    ;  Organization Name (eg, company)
    CkCsr::setCkCompany(csr, "Internet Widgits Pty Ltd")

    ;  Organizational Unit Name (eg, secion/division)
    CkCsr::setCkCompanyDivision(csr, "IT")

    ;  Email address
    CkCsr::setCkEmailAddress(csr, "support@mydomain.com")

    ;  Create the CSR using the private key.
    pemStr.s = CkCsr::ckGenCsrPem(csr,privKey)
    If CkCsr::ckLastMethodSuccess(csr) <> 1
        Debug CkCsr::ckLastErrorText(csr)
        CkRsa::ckDispose(rsa)
        CkPrivateKey::ckDispose(privKey)
        CkCsr::ckDispose(csr)
        ProcedureReturn
    EndIf

    ;  Save the private key and CSR to a files.
    CkPrivateKey::ckSavePkcs8EncryptedPemFile(privKey,"password","qa_output/privKey1.pem")

    fac.i = CkFileAccess::ckCreate()
    If fac.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkFileAccess::ckWriteEntireTextFile(fac,"qa_output/csr1.pem",pemStr,"utf-8",0)

    ;  Show the CSR.
    Debug pemStr

    ;  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-----


    CkRsa::ckDispose(rsa)
    CkPrivateKey::ckDispose(privKey)
    CkCsr::ckDispose(csr)
    CkFileAccess::ckDispose(fac)


    ProcedureReturn
EndProcedure