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Verify XAdES with External File Reference

See more XML Digital Signatures Examples

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

    // Load the XAdES file to be validated..
    const sb_xml = try chilkat.StringBuilder.init();
    defer sb_xml.deinit();
    sb_xml.loadFile("qa_data/xml_dsig_valid_samples/externalFile/test.pdf.XAdES", "utf-8") catch {
        std.debug.print("Failed to load XAdES input file.\n", .{});
        return;
    };

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

    // 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.setExternalRefDirs("qa_data/externalFiles;qa_data/xml_dsig_valid_samples/externalFile;c:/someOtherDir");

    validator.loadSignatureSb(sb_xml) catch {
        std.debug.print("{s}\n", .{try validator.getLastErrorText(alloc)});
        return;
    };

    // Validate signatures as usual..
    var i: i32 = 0;
    while (i < validator.getNumSignatures()) {
        validator.setSelector(i);

        const valid = if (validator.verifySignature(true)) true else |_| false;
        std.debug.print("Signature {d} and all reference digests OK = {}\n", .{ i + 1, valid });

        i = i + 1;
    }
}