XRP Account Generator

xag.rb

#!/usr/bin/ruby
# 
# Written by Dev Null Productions <devnullproductions@gmail.com>
#
# Small script to generate new XRPL account as described in the following document:
#   https://developers.ripple.com/accounts.html
#
# Simply run it with:
#   ruby xag.rb
#
# Output:
#   Account: rBfgMVusEncfmtgMg6VZeFEWnZNvaP1j3h
#   Public Key: 024D462BEA18564079FDDD32B06726716B62E08A7656DF3D1E1596BB06BC2B58BC
#   Private Key: 298C84B55ADACB4D7889FC4A8E38CF64919EE7BB5D27825A8C6987733902C34D
#
# Note: This will just create the credentials for a new account (public & private key, account id).
#       The account will not be activated on the XRP Ledger until a payment of the minimum account
#       reserve is sent to the account.

require 'securerandom'
require 'openssl'
require 'base58'

class String
  # Return bignum corresponding to string
  def to_bn
    bytes.inject(0) { |bn, b| (bn << 8) | b }
  end
end

# Private Key Seed:
# seed = "my secret"
seed = SecureRandom.random_bytes(32)

# Private Key:
priv = OpenSSL::Digest::SHA256.new.digest(seed)

# Public Key:
ecgrp = OpenSSL::PKey::EC::Group.new('secp256k1')
ecpriv = OpenSSL::PKey::EC.new("secp256k1")
pub = ecgrp.generator.mul(priv.to_bn)

# Account ID:
key = pub.to_bn(:compressed).to_s(16)
sha256 = OpenSSL::Digest::SHA256.new
ripemd160 = OpenSSL::Digest::RIPEMD160.new
account_id = [0].pack("C") + ripemd160.digest(sha256.digest([key].pack("H*")))

# Checksum:
chksum = sha256.digest(sha256.digest(account_id))[0..3]

# Full account representation:
account = Base58.binary_to_base58(account_id  + chksum, :ripple)

puts "Account: #{account}"
puts "Public Key: #{key}"
puts "Private Key: #{priv.unpack("H*").first.upcase}"