Lua Requires Chilkat v11.0.0+

secp256k1 Key Generation and Keccak-256

See more ECC Examples

Chilkat supports both secp256k1 key generation and Keccak-256 directly. These algorithms are typically used for Bitcoin and Ethereum. Lua

local chilkat = require("chilkat")

-- 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.
local fortuna = chilkat.Prng.new()
local entropy = fortuna:get_entropy(32, "base64")
local success = fortuna:add_entropy(entropy, "base64")

local ecc = chilkat.Ecc.new()

-- Generate a random ECDSA private key on the secp256k1 curve.
local privKey = chilkat.PrivateKey.new()
success = ecc:gen_key("secp256k1", fortuna, privKey)
if not success then
    print(ecc.last_error_text)
    return
end

print("Successfully generated a sec256k1 key.")

-- Show how to compute the Keccak-256 hash in a few ways.
local sb = chilkat.StringBuilder.new()
sb:append("hello")

print("keccak-256: " .. sb:get_hash("keccak-256", "hex_lower", "utf-8"))

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

-- To keccak-256 hash binary data
local bd = chilkat.BinData.new()
bd:append_encoded("00010203040506", "hex")

print("keccak-256: " .. bd:get_hash("keccak-256", "hex_lower"))

-- Output:
-- keccak-256: 801560412425120fa609be232d6fa71c7f64f42aee7977267687dcc0a2f5aa63