Swift
Swift
XAdES using TSA Requiring Client Certificate
See more XML Digital Signatures Examples
Demonstrates how to create an XMLDSig (XAdES) signed document which includes an EncapsulatedTimestamp using a TSA (TimeStamp Authority) server requiring client certificate authentication. One such TSA is https://www3.postsignum.cz/TSS/TSS_crt/Chilkat Swift Downloads
func chilkatTest() {
var success: Bool = false
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
success = true
// Load the XML to be signed. For example, the XML to be signed might contain something like this:
// <?xml version="1.0" encoding="utf-8"?>
// <TransakcniLogSystemu xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://nsess.public.cz/erms_trans/v_01_01" Id="Signature1">
// <TransLogInfo>
// <Identifikator>XYZ ABC</Identifikator>
// <DatumVzniku>2022-12-20T14:39:02.3625922+01:00</DatumVzniku>
// <DatumCasOd>2022-12-20T14:26:26.88</DatumCasOd>
// <DatumCasDo>2022-12-20T14:39:02.287</DatumCasDo>
// <Software>XYZ</Software>
// <VerzeSoftware>2.0.19.32</VerzeSoftware>
// </TransLogInfo>
// <Udalosti>
// <Udalost>
// <Poradi>1</Poradi>
// ...
// Load the XML to be signed from a file.
// (XML can be loaded from other source, such as a string variable.)
let sbXml = CkoStringBuilder()!
success = sbXml.loadFile(path: "xmlToSign.xml", charset: "utf-8")
let gen = CkoXmlDSigGen()!
gen.sigLocation = "TransakcniLogSystemu"
gen.sigLocationMod = 0
gen.sigId = "SignatureID-Signature1"
gen.sigNamespacePrefix = "ds"
gen.sigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
gen.signedInfoCanonAlg = "C14N"
gen.signedInfoDigestMethod = "sha256"
// Set the KeyInfoId before adding references..
gen.keyInfoId = "KeyInfoId-Signature-Signature1"
// Create an Object to be added to the Signature.
// Note: Chilkat will automatically fill in the values marked as "TO BE GENERATED BY CHILKAT" at the time of signing.
// The EncapsulatedTimestamp will be automatically generated.
let object1 = CkoXml()!
object1.tag = "xades:QualifyingProperties"
object1.addAttribute(name: "xmlns:xades", value: "http://uri.etsi.org/01903/v1.3.2#")
object1.addAttribute(name: "Target", value: "#Signature1")
object1.updateAttrAt(tagPath: "xades:SignedProperties", autoCreate: true, attrName: "Id", attrValue: "SignedProperties-Signature-Signature1")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime", value: "TO BE GENERATED BY CHILKAT")
object1.updateAttrAt(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/2001/04/xmlenc#sha256")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue", value: "TO BE GENERATED BY CHILKAT")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2", value: "TO BE GENERATED BY CHILKAT")
// The EncapsulatedTimestamp will be included in the unsigned properties.
object1.updateAttrAt(tagPath: "xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp", autoCreate: true, attrName: "Id", attrValue: "signature-timestamp-5561-8212-3316-5191")
object1.updateAttrAt(tagPath: "xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|ds:CanonicalizationMethod", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/2001/10/xml-exc-c14n#")
object1.updateAttrAt(tagPath: "xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp", autoCreate: true, attrName: "Encoding", attrValue: "http://uri.etsi.org/01903/v1.2.2#DER")
object1.updateChildContent(tagPath: "xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp", value: "TO BE GENERATED BY CHILKAT")
gen.add(id: "XadesObjectId-Signature1", content: object1.getXml(), mimeType: "", encoding: "")
// -------- Reference 1 --------
gen.addObjectRef(id: "SignedProperties-Signature-Signature1", digestMethod: "sha256", canonMethod: "EXCL_C14N", prefixList: "", refType: "http://uri.etsi.org/01903#SignedProperties")
// -------- Reference 2 --------
gen.addSameDocRef(id: "KeyInfoId-Signature-Signature1", digestMethod: "sha256", canonMethod: "EXCL_C14N", prefixList: "", refType: "")
gen.setRefIdAttr(uri_or_id: "KeyInfoId-Signature-Signature1", value: "ReferenceKeyInfo")
// -------- Reference 3 --------
gen.addSameDocRef(id: "", digestMethod: "sha256", canonMethod: "EXCL_C14N", prefixList: "", refType: "")
gen.setRefIdAttr(uri_or_id: "", value: "Reference-Signature1")
// Provide a certificate + private key. (PFX password is test123)
let cert = CkoCert()!
success = cert.loadPfxFile(path: "qa_data/pfx/cert_test123.pfx", password: "test123")
if success != true {
print("\(cert.lastErrorText!)")
return
}
gen.setX509Cert(cert: cert, usePrivateKey: true)
gen.keyInfoType = "X509Data"
gen.x509Type = "Certificate"
gen.behaviors = "IndentedSignature"
// -------------------------------------------------------------------------------------------
// To have the EncapsulatedTimeStamp automatically added...
// 1) Add the <xades:EncapsulatedTimeStamp Encoding="http://uri.etsi.org/01903/v1.2.2#DER">TO BE GENERATED BY CHILKAT</xades:EncapsulatedTimeStamp>
// to the unsigned properties. (This was accomplished in the above code.)
// 2) Specify the TSA URL (Timestamping Authority URL).
// Here we specify the TSA URL:
// -------------------------------------------------------------------------------------------
let jsonTsa = CkoJsonObject()!
jsonTsa.updateString(jsonPath: "timestampToken.tsaUrl", value: "https://www3.postsignum.cz/TSS/TSS_crt/")
jsonTsa.updateBool(jsonPath: "timestampToken.requestTsaCert", value: true)
gen.setTsa(json: jsonTsa)
// -------------------------------------------------------------------------------------------
// In this case, the TSA requires client certificate authentication.
// To provide your client certificate, the application will instantiate a Chilkat HTTP object,
// then set it up with a SSL/TLS client certificate, and then tell the XmlDSigGen object
// to use the HTTP object for connections to the TSA server.
// -------------------------------------------------------------------------------------------
let http = CkoHttp()!
success = http.setSslClientCertPfx(pfxPath: "/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx", pfxPassword: "pfxPassword")
if success != true {
print("\(http.lastErrorText!)")
return
}
// Tell the XmlDSigGen object to use the above HTTP object for TSA communications.
gen.setHttpObj(http: http)
// Sign the XML...
success = gen.createXmlDSigSb(sbXml: sbXml)
if success != true {
print("\(gen.lastErrorText!)")
return
}
// -----------------------------------------------
// Save the signed XML to a file.
success = sbXml.writeFile(path: "c:/temp/qa_output/signedXml.xml", charset: "utf-8", emitBom: false)
print("\(sbXml.getAsString()!)")
}