(Swift 3,4,5...) Verify XML Digital Signature

Verifies XML signatures in an XML file.

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

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

    let sbXml = CkoStringBuilder()!
    var success: Bool = sbXml.loadFile("qa_data/xml_dsig_verify/csioz_sample.xml", charset: "utf-8")
    if success != true {
        print("Failed to load XML file.")
        return
    }

    let dsig = CkoXmlDSig()!

    // First load the XML containing the signatures to be verified.
    success = dsig.loadSignatureSb(sbXml)
    if success != true {
        print("\(dsig.lastErrorText!)")
        return
    }

    // It's possible that an XML document can contain multiple signatures.
    // Each can be verified as follows:
    var i: Int = 0
    while i < dsig.numSignatures.intValue {
        // Select the Nth signature by setting the Selector property.
        dsig.selector = i

        // The bVerifyReferenceDigests argument determines if we want
        // to also verify each reference digest.  If set to false,
        // then only the SignedInfo part of the Signature is verified.
        var bVerifyReferenceDigests: Bool = true
        var bVerified: Bool = dsig.verifySignature(bVerifyReferenceDigests)
        print("Signature \(i + 1) verified = \(bVerified)")

        i = i + 1
    }


}