(Swift 3,4,5...) Generate CSR with Uncommon Fields

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR) for this:

csr.common.name=Admin forInformation-MainShop
csr.serial.number=1-XYZ|2-2.0|3-999695
csr.organization.identifier=990099994100099
csr.organization.unit.name=9999910000
csr.organization.name=9999910000
csr.country.name=SA
csr.invoice.type=1100
csr.location.address=King Fahed Road
csr.industry.business.category=MainOffice

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // First generate an RSA private key.
    let rsa = CkoRsa()!

    // Generate a random 2048-bit RSA key.
    var success: Bool = rsa.generateKey(2048)
    if success != true {
        print("\(rsa.lastErrorText!)")
        return
    }

    // Get the private key
    var privKey: CkoPrivateKey? = rsa.exportPrivateKeyObj()

    // Create the CSR object and set properties.
    let csr = CkoCsr()!

    csr.commonName = "Admin forInformation-MainShop"

    // Country Name (2 letter code)
    csr.country = "SA"

    // Organization Name (eg, company)
    csr.company = "9999910000"

    // Organizational Unit Name (eg, secion/division)
    csr.companyDivision = "9999910000"

    // See https://www.alvestrand.no/objectid/2.5.4.html for OIDs for the following fields:

    // csr.serial.number=1-XYZ|2-2.0|3-999695
    // 2.5.4.5 - id-at-serialNumber 
    csr.setSubjectField("2.5.4.5", value: "1-XYZ|2-2.0|3-999695", asnType: "UTF8String")

    // csr.organization.identifier=990099994100099
    // 2.5.4.45 - id-at-uniqueIdentifier   Don't know if this is correct.
    csr.setSubjectField("2.5.4.45", value: "1100", asnType: "UTF8String")

    // csr.invoice.type=1100
    // Don't know what this OID would be...
    csr.setSubjectField("2.5.4.99", value: "1100", asnType: "UTF8String")

    // csr.location.address=King Fahed Road
    // 2.5.4.9 - id-at-streetAddress 
    csr.setSubjectField("2.5.4.9", value: "King Fahed Road", asnType: "UTF8String")

    // csr.industry.business.category=MainOffice
    // 2.5.4.15 - id-at-businessCategory 
    csr.setSubjectField("2.5.4.15", value: "MainOffice", asnType: "UTF8String")

    // Create the CSR using the private key.
    var pemStr: String? = csr.genCsrPem(privKey)
    if csr.lastMethodSuccess != true {
        print("\(csr.lastErrorText!)")
        privKey = nil
        return
    }

    // Save the private key and CSR to a files.
    privKey!.savePkcs8EncryptedPemFile("password", path: "qa_output/privKey1.pem")
    privKey = nil

    let fac = CkoFileAccess()!
    fac.writeEntireTextFile("qa_output/csr1.pem", fileData: pemStr, charset: "utf-8", includePreamble: false)

    // Show the CSR.
    print("\(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
    // ...
    // ...
    // 	hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
    // 	-----END CERTIFICATE REQUEST-----

}