(Swift 2) Verify XAdES with External File Reference

Demonstrates how to validate an XML digital signature that contains a reference to an external file. (This is one way of doing it..)

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.

    // Load the XAdES file to be validated..
    let sbXml = CkoStringBuilder()
    var success: Bool = sbXml.LoadFile("qa_data/xml_dsig_valid_samples/externalFile/test.pdf.XAdES", charset: "utf-8")
    if success == false {
        print("Failed to load XAdES input file.")
        return
    }

    let validator = CkoXmlDSig()

    // Specify a set of absolute or relative directory paths to be searched for any external file references.
    // Directory paths are separated by semicolon chars.
    validator.ExternalRefDirs = "qa_data/externalFiles;qa_data/xml_dsig_valid_samples/externalFile;c:/someOtherDir"

    success = validator.LoadSignatureSb(sbXml)
    if success == false {
        print("\(validator.LastErrorText)")
        return
    }

    // Validate signatures as usual..
    var i: Int = 0
    while i < validator.NumSignatures.intValue {
        validator.Selector = i

        var valid: Bool = validator.VerifySignature(true)
        print("Signature \(i + 1) and all reference digests OK = \(valid)")

        i = i + 1
    }


}