Zig

DSA Generate Key

See more DSA Examples

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA 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 requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    const dsa = try chilkat.Dsa.init();
    defer dsa.deinit();

    // Call GenKey to generate a new DSA key.
    // The number of bits should be at least 1024 and a multiple
    // of 64.   Typical values are either 1024 or 2048.
    // DSA key generation is compute intensive and may take
    // a short while to complete.
    dsa.genKey(2048) catch {
        std.debug.print("{s}\n", .{try dsa.getLastErrorText(alloc)});
        return;
    };

    // Extract the private and public parts to PEM or DER format
    // and save to files...
    var pem_str: [:0]const u8 = "";
    var xml_str: [:0]const u8 = "";

    // First for the public key...
    // The public key never needs to be encrypted.

    // Save the public key in PEM format:
    pem_str = try dsa.toPublicPem(alloc);
    // This example will not check the return value of SaveText...
    try dsa.saveText(pem_str, "dsa_pub.pem");

    // Save the public key in DER format:
    try dsa.toPublicDerFile("dsa_pub.der");

    var b_public_only: bool = true;
    // Save to XML
    xml_str = try dsa.toXml(alloc, b_public_only);
    try dsa.saveText(xml_str, "dsa_pub.xml");

    // ------------------------------------
    // Now for the private key....
    // ------------------------------------

    // Unencrypted PEM:
    pem_str = try dsa.toPem(alloc);
    try dsa.saveText(pem_str, "dsa_priv.pem");

    // Encrypted PEM:
    pem_str = try dsa.toEncryptedPem(alloc, "myPassword");
    try dsa.saveText(pem_str, "dsa_privEncrypted.pem");

    // DER:
    try dsa.toDerFile("dsa_priv.der");

    // XML:
    b_public_only = false;
    xml_str = try dsa.toXml(alloc, b_public_only);
    try dsa.saveText(xml_str, "dsa_priv.xml");

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