Zig Requires Chilkat v11.0.0+

DKIM Signature using Windows Current User Certificate Store

See more DKIM / DomainKey Examples

This is a Windows-specific example to load a certificate from the Current User (registry-based) certificate store, and then use the certificate's associated private key for a DKIM signature. 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 cert = try chilkat.Cert.init();
    defer cert.deinit();

    // The LoadByCommonName method searches the Windows Local Machine and Current User
    // registry-based certificate stores for a certificate having the common name specified.
    // If found, the certificate is loaded and ready for use.
    cert.loadByCommonName("My Certificate ABC") catch {
        std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
        return;
    };

    // The certificate must have an associated private key installed, and it must be a
    // private key that has been marked "exportable" when it was originally installed.
    if (!cert.hasPrivateKey()) {
        std.debug.print("This certificate does not have a private key available.\n", .{});
        return;
    }

    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    cert.getPrivateKey(priv_key) catch {
        std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
        return;
    };

    const dkim = try chilkat.Dkim.init();
    defer dkim.deinit();

    // Load the private key into the DKIM object:
    dkim.setDkimPrivateKey(priv_key) catch {
        std.debug.print("{s}\n", .{try dkim.getLastErrorText(alloc)});
        return;
    };

    // The private key has been loaded into the DKIM object.  See the other DKIM
    // examples for guidance on how to create a DKIM signature...
}