Zig Requires Chilkat v11.0.0+

secp256k1 Key Generation and Keccak-256

See more ECC Examples

Starting in v11.0.0, Chilkat supports both secp256k1 key generation and Keccak-256 directly. These algorithms are typically used for Bitcoin and Ethereum. 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.

    // Create a Fortuna PRNG and seed it with system entropy.
    // This will be our source of random data for generating the ECDSA private key.
    const fortuna = try chilkat.Prng.init();
    defer fortuna.deinit();
    const entropy = try fortuna.getEntropy(alloc, 32, "base64");
    try fortuna.addEntropy(entropy, "base64");

    const ecc = try chilkat.Ecc.init();
    defer ecc.deinit();

    // Generate a random ECDSA private key on the secp256k1 curve.
    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    ecc.genKey("secp256k1", fortuna, priv_key) catch {
        std.debug.print("{s}\n", .{try ecc.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Successfully generated a sec256k1 key.\n", .{});

    // Show how to compute the Keccak-256 hash in a few ways.
    const sb = try chilkat.StringBuilder.init();
    defer sb.deinit();
    sb.append("hello") catch {};

    std.debug.print("keccak-256: {s}\n", .{try sb.getHash(alloc, "keccak-256", "hex_lower", "utf-8")});

    // Output:
    // keccak-256: 1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8

    // To keccak-256 hash binary data
    const bd = try chilkat.BinData.init();
    defer bd.deinit();
    bd.appendEncoded("00010203040506", "hex") catch {};

    std.debug.print("keccak-256: {s}\n", .{try bd.getHash(alloc, "keccak-256", "hex_lower")});

    // Output:
    // keccak-256: 801560412425120fa609be232d6fa71c7f64f42aee7977267687dcc0a2f5aa63
}