Zig Requires Chilkat v11.0.0+

PKCS11 Import an Existing RSA Public Key onto the HSM

See more PKCS11 Examples

Demonstrates how to import an existing RSA Public Key onto a smart card or token.

Note: This example requires Chilkat v9.5.0.96 or later.

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.

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    const pkcs11 = try chilkat.Pkcs11.init();
    defer pkcs11.deinit();

    // Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
    // (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
    pkcs11.setSharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll");

    // Establish a logged-on session.
    const pin = "0000";
    const user_type = 1;
    pkcs11.quickSession(user_type, pin) catch {
        std.debug.print("{s}\n", .{try pkcs11.getLastErrorText(alloc)});
        return;
    };

    // Generate a new 2048-bit RSA key.
    const rsa = try chilkat.Rsa.init();
    defer rsa.deinit();
    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    rsa.genKey(2048, priv_key) catch {
        std.debug.print("{s}\n", .{try rsa.getLastErrorText(alloc)});
        return;
    };

    // Get the public key information as XML, so we can access the modulus and exponent.
    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    const pub_key = try chilkat.PublicKey.init();
    defer pub_key.deinit();
    priv_key.toPublicKey(pub_key) catch {};
    xml.loadXml(try pub_key.getXml(alloc)) catch {};

    const attrs = try chilkat.JsonObject.init();
    defer attrs.deinit();
    // Specify the type of object, and the type of key.
    attrs.updateString("class", "CKO_PUBLIC_KEY") catch {};
    attrs.updateString("key_type", "CKK_RSA") catch {};
    // Add an optional label if desired.
    attrs.updateString("label", "RSA Public Key 1") catch {};
    // Allow the key to be use for verify, wrapping, and encryption operations.
    attrs.updateBool("verify", true) catch {};
    attrs.updateBool("wrap", true) catch {};
    attrs.updateBool("encrypt", true) catch {};

    // Make this a session-only public key.
    // To store the public key on the token so that it persists after the PKCS11 session, set token = true.
    attrs.updateBool("token", false) catch {};

    // Provide the RSA public key material
    attrs.updateString("modulus", try xml.getChildContent(alloc, "Modulus")) catch {};
    attrs.updateString("public_exponent", try xml.getChildContent(alloc, "Exponent")) catch {};

    // Create the RSA public key.
    // Returns the PKCS11 object handle of the created key.
    const obj_handle = pkcs11.createPkcs11Object(attrs);
    if (obj_handle == 0) {
        std.debug.print("{s}\n", .{try pkcs11.getLastErrorText(alloc)});
        std.debug.print("Failed.\n", .{});
    } else {
        std.debug.print("PKCS11 object handle = {d}\n", .{obj_handle});
        std.debug.print("Successfully imported an RSA key..\n", .{});
    }

    pkcs11.logout() catch {};
    pkcs11.closeSession() catch {};
}