Zig

Generate an Ed25519 Key Pair

See more Ed25519 Examples

Demonstrates how to generate a new Ed25519 public/private key pair.

Note: This example requires Chilkat v9.5.0.83 or greater.

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 eddsa = try chilkat.EdDSA.init();
    defer eddsa.deinit();
    const prng = try chilkat.Prng.init();
    defer prng.deinit();
    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();

    // Generates a new eddsa key and stores it in privKey.
    eddsa.genEd25519Key(prng, priv_key) catch {
        std.debug.print("{s}\n", .{try eddsa.getLastErrorText(alloc)});
        return;
    };

    // Examine the ed25519 key in JWK format;
    const jwk = try priv_key.getJwk(alloc);

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.load(jwk) catch {};
    json.setEmitCompact(false);
    std.debug.print("{s}\n", .{try json.emit(alloc)});

    // Sample output:
    // {
    //   "kty": "OKP",
    //   "crv": "Ed25519",
    //   "x": "SE2Kne5xt51z1eciMH2T2ftDQp96Gl6FhY6zSQujiP0",
    //   "d": "O-eRXewadF0sNyB0U9omcnt8Qg2ZmeK3WSXPYgqe570",
    //   "use": "sig"
    // }

    // In the above JWK, x is the public key, y is the private key.
    // Both are 32 bytes and are base64-url encoded.
}