Rust

Verify XML Digital Signature

See more XML Digital Signatures Examples

Verifies XML signatures in an XML file. Rust

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

let sb_xml = chilkat::StringBuilder::new();
if sb_xml.load_file("qa_data/xml_dsig_verify/csioz_sample.xml", "utf-8").is_err() {
    println!("Failed to load XML file.");
    return;
}

let dsig = chilkat::XmlDSig::new();

// First load the XML containing the signatures to be verified.
if dsig.load_signature_sb(&sb_xml).is_err() {
    println!("{}", dsig.last_error_text());
    return;
}

// It's possible that an XML document can contain multiple signatures.
// Each can be verified as follows:
let mut i = 0;
while i < dsig.num_signatures() {
    // Select the Nth signature by setting the Selector property.
    dsig.set_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.
    let b_verify_reference_digests = true;
    let b_verified = dsig.verify_signature(b_verify_reference_digests).is_ok();
    println!("Signature {} verified = {}", i + 1, b_verified);

    i = i + 1;
}