Swift
Swift
XML-DSig Add Reference with Transforms Specified Explicitly
Demonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.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
// Create the following XML to be signed:
// <doc>
// <s id="s1">Some text...</s>
// <p>Some text...</p>
// <p class="note">A note...</p>
// </doc>
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
let xmlToSign = CkoXml()!
xmlToSign.tag = "doc"
xmlToSign.updateAttrAt(tagPath: "s", autoCreate: true, attrName: "id", attrValue: "s1")
xmlToSign.updateChildContent(tagPath: "s", value: "Some text...")
xmlToSign.updateChildContent(tagPath: "p", value: "Some text...")
xmlToSign.updateAttrAt(tagPath: "p[1]", autoCreate: true, attrName: "class", attrValue: "note")
xmlToSign.updateChildContent(tagPath: "p[1]", value: "A note...")
print("\(xmlToSign.getXml()!)")
let gen = CkoXmlDSigGen()!
gen.sigLocation = "doc"
gen.sigLocationMod = 0
gen.sigId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature"
gen.sigNamespacePrefix = "ds"
gen.sigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
gen.sigValueId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-SignatureValue"
gen.signedInfoCanonAlg = "C14N"
gen.signedInfoDigestMethod = "sha1"
// Set the KeyInfoId before adding references..
gen.keyInfoId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo"
// The following XML to be added as an Object to the Signature
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// <xades:QualifyingProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties" Target="#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#">
// <xades:SignedProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties">
// <xades:SignedSignatureProperties>
// <xades:SigningTime>TO BE GENERATED BY CHILKAT</xades:SigningTime>
// <xades:SigningCertificate>
// <xades:Cert>
// <xades:CertDigest>
// <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
// <ds:DigestValue>TO BE GENERATED BY CHILKAT</ds:DigestValue>
// </xades:CertDigest>
// <xades:IssuerSerial>
// <ds:X509IssuerName>TO BE GENERATED BY CHILKAT</ds:X509IssuerName>
// <ds:X509SerialNumber>TO BE GENERATED BY CHILKAT</ds:X509SerialNumber>
// </xades:IssuerSerial>
// </xades:Cert>
// </xades:SigningCertificate>
// </xades:SignedSignatureProperties>
// <xades:SignedDataObjectProperties>
// <xades:DataObjectFormat ObjectReference="#Reference-24eb6003-d41c-442c-a731-d4c58f94790b">
// <xades:Description/>
// <xades:ObjectIdentifier>
// <xades:Identifier Qualifier="OIDAsURN">urn:oid:1.2.840.10003.5.109.10</xades:Identifier>
// <xades:Description/>
// </xades:ObjectIdentifier>
// <xades:MimeType>text/xml</xades:MimeType>
// <xades:Encoding/>
// </xades:DataObjectFormat>
// </xades:SignedDataObjectProperties>
// </xades:SignedProperties>
// </xades:QualifyingProperties>
let object1 = CkoXml()!
object1.tag = "xades:QualifyingProperties"
object1.addAttribute(name: "Id", value: "Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties")
object1.addAttribute(name: "Target", value: "#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature")
object1.addAttribute(name: "xmlns:ds", value: "http://www.w3.org/2000/09/xmldsig#")
object1.addAttribute(name: "xmlns:xades", value: "http://uri.etsi.org/01903/v1.3.2#")
object1.updateAttrAt(tagPath: "xades:SignedProperties", autoCreate: true, attrName: "Id", attrValue: "Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime", value: "TO BE GENERATED BY CHILKAT")
// Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1
object1.updateAttrAt(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/2000/09/xmldsig#sha1")
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")
object1.updateAttrAt(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat", autoCreate: true, attrName: "ObjectReference", attrValue: "#Reference-24eb6003-d41c-442c-a731-d4c58f94790b")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description", value: "")
object1.updateAttrAt(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier", autoCreate: true, attrName: "Qualifier", attrValue: "OIDAsURN")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier", value: "urn:oid:1.2.840.10003.5.109.10")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description", value: "")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType", value: "text/xml")
object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding", value: "")
print("\(object1.getXml()!)")
gen.add(id: "", content: object1.getXml(), mimeType: "", encoding: "")
// -------- Reference 1 --------
// Create the following Transforms fragment:
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// <ds:Transforms>
// <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
// <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
// <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
// <ds:XPath xmlns:ds="http://www.w3.org/2000/09/xmldsig#">not(ancestor-or-self::ds:Signature)</ds:XPath>
// </ds:Transform>
// </ds:Transforms>
let xml1 = CkoXml()!
xml1.tag = "ds:Transforms"
xml1.updateAttrAt(tagPath: "ds:Transform", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/TR/2001/REC-xml-c14n-20010315")
xml1.updateAttrAt(tagPath: "ds:Transform[1]", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/2000/09/xmldsig#enveloped-signature")
xml1.updateAttrAt(tagPath: "ds:Transform[2]", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/TR/1999/REC-xpath-19991116")
xml1.updateAttrAt(tagPath: "ds:Transform[2]|ds:XPath", autoCreate: true, attrName: "xmlns:ds", attrValue: "http://www.w3.org/2000/09/xmldsig#")
xml1.updateChildContent(tagPath: "ds:Transform[2]|ds:XPath", value: "not(ancestor-or-self::ds:Signature)")
// This is the "Transforms" XML fragment passed to AddSameDocRef2.
print("\(xml1.getXml()!)")
gen.addSameDocRef2(id: "", digestMethod: "sha1", transforms: xml1, refType: "")
gen.setRefIdAttr(uri_or_id: "", value: "Reference-24eb6003-d41c-442c-a731-d4c58f94790b")
// -------- Reference 2 --------
gen.addObjectRef(id: "Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties", digestMethod: "sha1", canonMethod: "", prefixList: "", refType: "http://uri.etsi.org/01903#SignedProperties")
// -------- Reference 3 --------
gen.addSameDocRef(id: "Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo", digestMethod: "sha1", canonMethod: "", prefixList: "", refType: "")
// 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+KeyValue"
gen.x509Type = "CertChain"
// Load XML to be signed...
let sbXml = CkoStringBuilder()!
xmlToSign.getSb(sb: sbXml)
gen.behaviors = "IndentedSignature"
// 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: "qa_output/signedXml.xml", charset: "utf-8", emitBom: false)
print("\(sbXml.getAsString()!)")
// ----------------------------------------
// Verify the signatures we just produced...
let verifier = CkoXmlDSig()!
success = verifier.loadSignatureSb(sbXmlSig: sbXml)
if success != true {
print("\(verifier.lastErrorText!)")
return
}
var numSigs: Int = verifier.numSignatures.intValue
var verifyIdx: Int = 0
while verifyIdx < numSigs {
verifier.selector = verifyIdx
var verified: Bool = verifier.verifySignature(verifyReferenceDigests: true)
if verified != true {
print("\(verifier.lastErrorText!)")
return
}
verifyIdx = verifyIdx + 1
}
print("All signatures were successfully verified.")
}