Swift
Swift
Duplicate CSR Created by OpenSSL with Config.cnf
See more CSR Examples
Demonstrates how to duplicate a CSR created by the following commands:# Generate Private Key openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem #Generate CSR openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example duplicates the CSR created by OpenSSL with the following config file:
// oid_section = OIDs
// [ OIDs ]
// certificateTemplateName= 1.3.6.1.4.1.311.20.2
//
// [ req ]
// default_bits = 2048
// emailAddress = it@example.sa
// req_extensions = v3_req
// x509_extensions = v3_ca
// prompt = no
// default_md = sha256
// req_extensions = req_ext
// distinguished_name = dn
//
// [ v3_req ]
// basicConstraints = CA:FALSE
// keyUsage = digitalSignature, nonRepudiation, keyEncipherment
//
// [req_ext]
// certificateTemplateName = ASN1:PRINTABLESTRING:ZATCA-Code-Signing
// subjectAltName = dirName:alt_names
//
// [ dn ]
// CN =EXAMPLE-CORP # Common Name
// C=SA # Country Code e.g SA
// OU=HEAD-OFFICE # Organization Unit Name
// O=ASC # Organization Name
//
// [alt_names]
// SN=1-ASC|2-V01|3-1234567890 # EGS Serial Number 1-ABC|2-PQR|3-XYZ
// UID=312345678900003 # Organization Identifier (VAT Number)
// title=1100 # Invoice Type
// registeredAddress=Dammam # Address
// businessCategory=IT # Business Category
// The OpenSSL commands we are duplicating:
// openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem
// openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
// The 1st step is to actually use OpenSSL to generate a sample CSR.csr that we wish to duplicate.
// With the sample CSR.csr, we get the ExtensionRequest as XML.
// For example:
let sbCsr = CkoStringBuilder()!
success = sbCsr.loadFile(path: "qa_data/csr/openssl_cnf/CSR.csr", charset: "utf-8")
if success == false {
print("Failed to load CSR.csr")
return
}
let csr0 = CkoCsr()!
success = csr0.loadPem(csrPemStr: sbCsr.getAsString())
if success == false {
print("\(csr0.lastErrorText!)")
return
}
let xml0 = CkoXml()!
success = csr0.getExtensionRequest(extensionReqXml: xml0)
if success == false {
print("\(csr0.lastErrorText!)")
return
}
// Let's examine the extension request..
print("\(xml0.getXml()!)")
// <?xml version="1.0" encoding="utf-8"?>
// <set>
// <sequence>
// <sequence>
// <oid>1.3.6.1.4.1.311.20.2</oid>
// <asnOctets>
// <printable>ZATCA-Code-Signing</printable>
// </asnOctets>
// </sequence>
// <sequence>
// <oid>2.5.29.17</oid>
// <asnOctets>
// <sequence>
// <contextSpecific tag="4" constructed="1">
// <sequence>
// <set>
// <sequence>
// <oid>2.5.4.4</oid>
// <utf8>1-ASC|2-V01|3-1234567890</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>0.9.2342.19200300.100.1.1</oid>
// <utf8>312345678900003</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.12</oid>
// <utf8>1100</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.26</oid>
// <utf8>Dammam</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.15</oid>
// <utf8>IT</utf8>
// </sequence>
// </set>
// </sequence>
// </contextSpecific>
// </sequence>
// </asnOctets>
// </sequence>
// </sequence>
// </set>
// If you wish to generate the above XML without going through the above steps, copy the XML into
// the online tool at https://tools.chilkat.io/xmlCreate
// Here is the generated code for the above XML:
let xml = CkoXml()!
xml.tag = "set"
xml.updateChildContent(tagPath: "sequence|sequence|oid", value: "1.3.6.1.4.1.311.20.2")
xml.updateChildContent(tagPath: "sequence|sequence|asnOctets|printable", value: "ZATCA-Code-Signing")
xml.updateChildContent(tagPath: "sequence|sequence[1]|oid", value: "2.5.29.17")
xml.updateAttrAt(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific", autoCreate: true, attrName: "tag", attrValue: "4")
xml.updateAttrAt(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific", autoCreate: true, attrName: "constructed", attrValue: "1")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid", value: "2.5.4.4")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8", value: "1-ASC|2-V01|3-1234567890")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid", value: "0.9.2342.19200300.100.1.1")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8", value: "312345678900003")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid", value: "2.5.4.12")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8", value: "1100")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid", value: "2.5.4.26")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8", value: "Dammam")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid", value: "2.5.4.15")
xml.updateChildContent(tagPath: "sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8", value: "IT")
// We'll need a new secp256k1 private key, so let's generate it.
let ecdsa = CkoEcc()!
let prng = CkoPrng()!
let privKey = CkoPrivateKey()!
success = ecdsa.genKey(curveName: "secp256k1", prng: prng, privKey: privKey)
if success == false {
print("\(ecdsa.lastErrorText!)")
return
}
print("Generated secp256k1 private key.")
// Use a new CSR object to generate a CSR with the private key and extension request.
let csr = CkoCsr()!
// Add the [dn] fields
// [ dn ]
// CN =EXAMPLE-CORP # Common Name
// C=SA # Country Code e.g SA
// OU=HEAD-OFFICE # Organization Unit Name
// O=ASC # Organization Name
csr.commonName = "EXAMPLE-CORP"
csr.country = "SA"
csr.companyDivision = "HEAD-OFFICE"
csr.company = "ASC"
// Add the extension request to the CSR
csr.setExtensionRequest(extensionReqXml: xml)
// Generate the CSR with the extension request
var csrPem: String? = csr.genPem(privKey: privKey)
if csr.lastMethodSuccess == false {
print("\(csr.lastErrorText!)")
return
}
print("\(csrPem!)")
// Sample output:
// -----BEGIN CERTIFICATE REQUEST-----
// MIIBuDCCAV8CAQAwSDEVMBMGA1UEAwwMRVhBTVBMRS1DT1JQMQswCQYDVQQGEwJT
// QTEUMBIGA1UECwwLSEVBRC1PRkZJQ0UxDDAKBgNVBAoMA0FTQzBWMBAGByqGSM49
// AgEGBSuBBAAKA0IABFI5rusr76HiJcMMr1r4L0B0BOAs6azLkt/RwHoT6A0xFRRt
// tulWT40tNhx3qJ4I5ePNgMceOEtuK1kMGVTovI6ggbcwgbQGCSqGSIb3DQEJDjGB
// pjCBozAhBgkrBgEEAYI3FAIEFBMSWkFUQ0EtQ29kZS1TaWduaW5nMH4GA1UdEQR3
// MHWkczBxMSEwHwYDVQQEDBgxLUFTQ3wyLVYwMXwzLTEyMzQ1Njc4OTAxHzAdBgoJ
// kiaJk/IsZAEBDA8zMTIzNDU2Nzg5MDAwMDMxDTALBgNVBAwMBDExMDAxDzANBgNV
// BBoMBkRhbW1hbTELMAkGA1UEDwwCSVQwCgYIKoZIzj0EAwIDRwAwRAIgJnbgpSGb
// diB+0M1VTqc1GU9sFsfnOvVN/8WhWRRxQIwCIF5eH9vgMgXyoU284X8Bx3dqOJ4q
// xashGWci87POxSvT
// -----END CERTIFICATE REQUEST-----
}