Zig

AddDetachedSignaturePk

See more MIME Examples

Demonstrates how to add a detached signature using a certifcate and it's corresponding private key. The easiest way of doing it is when both the certificate and private key are contained together within a PFX (.pfx or .p12) file. This example demonstrates how to use the certificate and its corresponding private key when they are stored in separate files -- a .cer for the certificate, and a .pem for the private key. Zig

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

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

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

    const mime = try chilkat.Mime.init();
    defer mime.deinit();

    // Load the certificate from a .cer file.
    const cert = try chilkat.Cert.init();
    defer cert.deinit();
    cert.loadFromFile("aaworkarea/myCert.cer") catch {
        std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
        return;
    };

    // Load the private key from an encrypted PEM file.
    // (A private key can be loaded from other file formats also..)
    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    priv_key.loadEncryptedPemFile("aaworkarea/myPrivateKey.pem", "myPassword") catch {
        std.debug.print("{s}\n", .{try priv_key.getLastErrorText(alloc)});
        return;
    };

    try mime.setBodyFromPlainText("This is the plain-text MIME body.");

    // Sign the MIME (adds a PKCS7 detached signature)
    mime.addDetachedSignaturePk(cert, priv_key) catch {
        std.debug.print("{s}\n", .{try mime.getLastErrorText(alloc)});
        return;
    };

    // Save the S/MIME to a file.
    mime.saveMime("aaworkarea/signedMime.txt") catch {
        std.debug.print("{s}\n", .{try mime.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("success!\n", .{});
}