Zig Requires Chilkat v11.0.0+

Generate an RSA Key and Save to Encrypted PEM

See more RSA Examples

Demonstrates how to generate an RSA key and save to an encrypted PEM file. Zig

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

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

    const rsa = try chilkat.Rsa.init();
    defer rsa.deinit();

    // Generate a 2048-bit key.
    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;
    };

    const password = "secret";
    // Saving to a relative path (from the current working directory of the process).
    var path: [:0]const u8 = "rsaKeys/myTestRsaPrivate.pem";
    // Encrypt the PEM using 256-bit AES encryption.
    priv_key.setPkcs8EncryptAlg("aes256");
    priv_key.savePkcs8EncryptedPemFile(password, path) catch {
        std.debug.print("{s}\n", .{try priv_key.getLastErrorText(alloc)});
        return;
    };

    // 

    // We can also save the public key.
    // There is no need to encrypt public keys.
    const pub_key = try chilkat.PublicKey.init();
    defer pub_key.deinit();
    priv_key.toPublicKey(pub_key) catch {};

    path = "rsaKeys/myTestRsaPublic.pem";
    // Choose PKCS1 or PKCS8
    // We'll choose PKCS8.
    const prefer_pkcs1 = false;
    pub_key.savePemFile(prefer_pkcs1, path) catch {
        std.debug.print("{s}\n", .{try pub_key.getLastErrorText(alloc)});
        return;
    };

    // 

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