Swift Requires Chilkat v11.0.0+
Swift
Generate a CSR containing an Extension Request
See more CSR Examples
Demonstrates how to generate a CSR containing a 1.2.840.113549.1.9.14 extensionRequest.Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example will generate a secp256r1 ECDSA key for the CSR.
let ecc = CkoEcc()!
let prng = CkoPrng()!
let privKey = CkoPrivateKey()!
success = ecc.genKey(curveName: "secp256r1", prng: prng, privKey: privKey)
if success == false {
print("Failed to generate a new ECDSA private key.")
return
}
let csr = CkoCsr()!
// Add common CSR fields:
csr.commonName = "mysubdomain.mydomain.com"
csr.country = "GB"
csr.state = "Yorks"
csr.locality = "York"
csr.company = "Internet Widgits Pty Ltd"
csr.emailAddress = "support@mydomain.com"
// Add the following 1.2.840.113549.1.9.14 extensionRequest
// Note: The easiest way to know the content and format of the XML to be added is to examine
// a pre-existing CSR with the same desired extensionRequest. You can use Chilkat to
// get the extensionRequest from an existing CSR.
// Here is a sample extension request:
// <?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>334623324234325</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>0.9.2342.19200300.100.1.1</oid>
// <utf8>310122393500003</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.12</oid>
// <utf8>0000</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.26</oid>
// <utf8>Sample E</utf8>
// </sequence>
// </set>
// <set>
// <sequence>
// <oid>2.5.4.15</oid>
// <utf8>Sample Business</utf8>
// </sequence>
// </set>
// </sequence>
// </contextSpecific>
// </sequence>
// </asnOctets>
// </sequence>
// </sequence>
// </set>
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// Here's the code to generate the above extension request.
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: "334623324234325")
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: "310122393500003")
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: "0000")
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: "Sample E")
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: "Sample Business")
// 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 PEM output:
// -----BEGIN CERTIFICATE REQUEST-----
// MIICEjCCAbkCAQAwgZcxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
// bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw
// HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxIzAhBgkqhkiG9w0BCQEW
// FHN1cHBvcnRAbXlkb21haW4uY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
// g8EVNSV0ttlM9kG2E+J3ZB9WEDYVf2QA/8idrPRUafia1CHjd1kslwZA8eP2bAcf
// 2O493QAENqtW6DTHJbRz8KCBvjCBuwYJKoZIhvcNAQkOMYGtMIGqMCEGCSsGAQQB
// gjcUAgQUExJaQVRDQS1Db2RlLVNpZ25pbmcwgYQGA1UdEQR9MHukeTB3MRgwFgYD
// VQQEDA8zMzQ2MjMzMjQyMzQzMjUxHzAdBgoJkiaJk/IsZAEBDA8zMTAxMjIzOTM1
// MDAwMDMxDTALBgNVBAwMBDAwMDAxETAPBgNVBBoMCFNhbXBsZSBFMRgwFgYDVQQP
// DA9TYW1wbGUgQnVzaW5lc3MwCgYIKoZIzj0EAwIDRwAwRAIgF7D30eSBklfo+oel
// 1B0z64eJDB9MB3rCoiFZlj+mz0YCIHYI87eyqdtw2LOcAoBRhyxlBT6i28+Z/8t9
// bYsMIYvp
// -----END CERTIFICATE REQUEST-----
}