Zig Requires Chilkat v11.0.0+

RSA Encrypt with Modulus and Exponent

See more RSA Examples

Demonstrates how to RSA encrypt with a given modulus and exponent. 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 rsa = try chilkat.Rsa.init();
    defer rsa.deinit();

    // Assuming you already have a base64 modulus and exponent,
    // wrap it in XML like this:
    const modulus = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM=";
    const exponent = "AQAB";

    const xml = try chilkat.Xml.init();
    defer xml.deinit();
    xml.setTag("RSAPublicKey");
    xml.newChild2("Modulus", modulus);
    xml.newChild2("Exponent", exponent);

    const pub_key = try chilkat.PublicKey.init();
    defer pub_key.deinit();
    pub_key.loadFromString(try xml.getXml(alloc)) catch {
        std.debug.print("{s}\n", .{try pub_key.getLastErrorText(alloc)});
        return;
    };

    rsa.usePublicKey(pub_key) catch {
        std.debug.print("{s}\n", .{try rsa.getLastErrorText(alloc)});
        return;
    };

    const use_private_key = false;
    const plain_text = "message in a bottle";

    rsa.setEncodingMode("base64");
    const encrypted_str_base64 = try rsa.encryptStringENC(alloc, plain_text, use_private_key);
    std.debug.print("{s}\n", .{encrypted_str_base64});
}