Zig

Verify XML Digital Signature

See more XML Digital Signatures Examples

Verifies XML signatures in an XML file. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

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

    const sb_xml = try chilkat.StringBuilder.init();
    defer sb_xml.deinit();
    sb_xml.loadFile("qa_data/xml_dsig_verify/csioz_sample.xml", "utf-8") catch {
        std.debug.print("Failed to load XML file.\n", .{});
        return;
    };

    const dsig = try chilkat.XmlDSig.init();
    defer dsig.deinit();

    // First load the XML containing the signatures to be verified.
    dsig.loadSignatureSb(sb_xml) catch {
        std.debug.print("{s}\n", .{try dsig.getLastErrorText(alloc)});
        return;
    };

    // It's possible that an XML document can contain multiple signatures.
    // Each can be verified as follows:
    var i: i32 = 0;
    while (i < dsig.getNumSignatures()) {
        // Select the Nth signature by setting the Selector property.
        dsig.setSelector(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.
        const b_verify_reference_digests = true;
        const b_verified = if (dsig.verifySignature(b_verify_reference_digests)) true else |_| false;
        std.debug.print("Signature {d} verified = {}\n", .{ i + 1, b_verified });

        i = i + 1;
    }
}